Installing Oil Pressure Sending Unit

By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. If a look on the dashboard indicates that the engine temperature is racing up, the oil pressure is insufficient and friction is starting to. I want to replace my oil pressure warning light with an electrical guage on my '65 273 also. In some cases there may be a blank plug on the oil filter flange but the sending unit won't physically fit. SIM YAMAHA is your dependable, affordable, knowledgeable, authorized USA Yamaha marine outboard motor and YAMAHA OEM outboard motor parts, Yamalube oil and accessories dealer for two-stroke, four-stroke and jet pump motors. if you can hear the lifters chattering away then save the $25. ACVW Gauge Sending Units From Mid America Motorworks. I've got a leaking oil pressure switch/sending unit and will be replacing it tomorrow. Then drive the car and see what the gauge does. The step motor is bad. It appears that it is coming from the oil pressure sending unit. The end accepting the sending unit is a 10x 1 thread, but could be any thread to match the sending unit [most now are tapered]. It was leaking oil about quart a day. )you want to see if the engine really is dropping off pressure or if the gauge is malfunctioning. The type of gauge is irrelevant. To get to it, remove the fuel filter housing and loosen the Allen bolt from the ECM harness. Mazda used a REAL differential analog oil pressure gauge system (sender unit AND dash gauge) from 1990 through the 1994 model year. I ended up asking a friend of mine who is a mechanic, and he recommended that I change this unit because my oil pressure was fluctuating alot. Arrow 1 points to the banjo fitting. Also in the link is advice for how to use an alligator clip to drive home after a control unit failure. 2L GM engines) (anywhere from 95-01 engines). Disconnect the plug and use a 13/16th deep socket or a open end wrentch to remove the sender. My question is where exactly OEM locations for Oil Pressure and Water Temperature sending units. 3 and 4 show two slightly different styles of heads, but although slightly different in appearance, they both work the same and have the same electrical resistance values. I install a oil pressure gauge in my 1982 Rv, the dash gauge stopped working so I replaced it with an aftermarket,. Oliver Parts sells replacement parts for farm equipment. Re: Oil pressure sending unit It is quite depressing. i need to install both my stock oil pressure sending unit and the bigger one that came with the autometer guages but there isnt enough room to do it where the stock one was, right below the alternator. When I first start the engine up my oil gauge shows 30 psi. Simply replace the connectors and I’m good. I'm now trying to find out what the size (thread, pitch, etc. Locate the oil return line to the transmission. The plan is good, so I looked around for the switch with no luck. Oil pressure sending unit problems. Replace the Oil Sending Unit. Remove the right engine mount. Probably you need to replace the oil pressure sending unit. One of those spare parts was another canister that has a sending unit mounted on it, that according to Bruce Lancaster was how it was done after 48. Before I go into doing it i wanna see how its done. What is an oil pressure switch and where is it located? The oil pressure switch—also known as the oil pressure sensor, oil pressure sending unit, or oil pressure sender—is a sensor that connects to your oil pressure gauge to inform you of your oil pressure. On my Evinrude outboard motor (225-HP) the water pressure gauge hose is connected into the cooling system by a plastic tee fitting near the aspirator. it has always been a tab higher than middle which i told was normal for the truck, but this morning when ever i stopped it would go. The quickest way to identify whether or not your engine has the correct pressure gauge and corresponding sending unit is to visually verify the 0 - 5 bar or 0 - 10 bar stamped on the sending unit hex nut (see Figure 1) and. The process of eliminating or identifying the. Click "Download" to get the full free document, or view any other Coupe PDF totally free. The stock oil pressure sending unit is in an almost inaccessible spot, so I installed the Autometer sending unit in the the #8 O-ring plugged hole at the base of the oil filter. Below is an example of each type of kit. The Problem: I want to install an oil pressure gauge in my VW but there's nowhere to install the sender The Answer: 42's Oil Pressure Relocation Kit Most VW/Audi engines offer no simple location to install an aftermarket oil pressure sender. We need to remove the factory oil pressure warning sender. OK guys, here is my question. So you can replace stock sending unit that is used for idiot light with duel output unit and be good to go- some adapters will be needed as threads are not the same. 0 efi that seems to be having an oil sending unit troubles. Fuel level gauge and fuel sending unit for gas tank. Voltmeter gauge. The sending unit is located just under the oil filter facing the front of the engine. Resistance of Oil Pressure & Water Temp Senders. On an idiot light setup, the oil pressure switch is closed (direct connection to ground) when there is no oil pressure and open (no connection to ground) when there is oil pressure above whatever level the switch is preset for. If a look on the dashboard indicates that the engine temperature is racing up, the oil pressure is insufficient and friction is starting to. I cannot get the light to come off by simply spinning the engine with the compression released. If you have a Subaru- we do carry Oil Galley plugs to enable you to screw this sender directly into the engine block. Apply sealing compound to threads of elbow (3) before installing on engine. where is the oil sending unit on a 2001 4. That is why just turning over the engine with the starter will not get a result. 2) Install the Classic Instrument's temperature sending unit only when the engine is COLD!. Reverse the process to install the new. I got a great deal on the gauge itself from glowshift. Installation: - The installation is the reverse of the removal. See how to find this unit, and the steps to replace it. volvo 240 oil pressure sender unit Post by vcowens » 10 Oct 2016, 00:49 hello everyone, i was finishing up installing a 5 bar pressure gauge in my 1991 240. It seals one end as original, is the 17 mm hex as original and is plated as original. Electronic Oil Pressure Gauge Mechanical Oil Pressure Gauge. The guy who removed my engine misplaced the oil pressure sending unit. Hope this helps. I want to keep the stock oil light working but install the manual line also. The oil pressure sending unit on a PT cruiser can be found on the upper front cover of the engine. this is located directly under the oil filter on the '05 sporty. I currently use the stock electric sending unit that delivers the signal to the oil light in the dash and want to keep this working. put teflon tape just a little above the bottom threads. Ok, here's the deal -- There is a sensor inside that sending unit that measures how much oil pressure you have. Kmk2zf, read the thread I linked above. Detailed instructions on how to replace an oil sending unit on a GM Truck/Suburban/Escalade/Avalanche/Denali 2007-20014. VDO oil pressure sender part no. Correct tool required for removing and installing oil pressure sending units - Cutlass/4-4-2 is ALL we do!. In a oil filter sandwich adapter plate. Some oil will escape but don't worry 2, Screw in the new style twin connector sender unit until tight (but don't overtighten). It features metal and plastic construction, and the part is 3 inches by 2 inches by 3 inches. Autometer makes really nice gages and you get everything in the kit, grommets, black split loom, hardware and of course the gauge, sending unit and wiring harness. Searched the web and forums and seen several places, but can't be sure which one is original. When the oil sending unit receives pressure which below a factory set level, the oil pressure warning light illuminates. Temperature Sender Installation (Part No. Don't use teflon tape on either one for installation. 3 and 4 show two slightly different styles of heads, but although slightly different in appearance, they both work the same and have the same electrical resistance values. 5 volts is applied through the gauge, and into the sending unit. Thanks, Richard Sweet. If you don't find what you're looking for, shoot us an email ([email protected] Also, have the new sending unit ready to install to minimize the amount of oil that drips out. I have a 2004 GMC Yukon XL SLT 5. The Lucas mechanical gauge kit consists of the gauge with capillary tube and sender unit (A), and adapter nut and sealing washer (B). How To: Replace an oil pressure sending unit to fix a low engine oil pressure gauge News : Chevy Annouces Free Update That Brings Android Auto to 12 More Cars & Trucks News : GM Just Has to Flip a Switch to Mass Produce Driverless Bolts. I have the replacement but just need to get the old one off to install it. Correct tool required for removing and installing oil pressure sending units - Cutlass/4-4-2 is ALL we do!. The following are instructions for Auto Meter gauges but should apply generically to any brand. Then drive the car and see what the gauge does. I've realized that my oil pressure gauge isn't really a pressure gauge. Won't do anything for oil PRESSURE though! » Where on engine to put an oil temp sender ?. Re: Locating the oil pressure sending unit Actually the damn thing keeps breaking off ~curse the aftermarket~It seem none of the replacement engine oil dipsticks for the AMC motors have the mounting tab on the tube as they did OE. Camaro and Firebird: How to Replace Oil Pressure Sensor. where is the oil sending unit on a 2001 4. If the light stays on with the engine running, stop the engine immediately to avoid severe engine damage until the cause of the problem can be determined. so it will work correctly. not rated $ 55. The oil pressure switch, otherwise known as the oil pressure sensor/sending unit, gauges the capacity or integrity of the engine’s lubrication system. Reply 1: These have two different engines so here are both locations below. Joe is right, the ford computer does not care about oil pressure, but it will NOT let you reverse the Mass air meter. this is located directly under the oil filter on the '05 sporty. Choose a suitable location to mount the oil pressure gauge; Step 2. The oil pressure switch monitors changes in the oil pressure. To install an oil pressure gauge you will first need to purchase one. I talked to the Alumacraft Rep' and he says the buzzer is silent until there is a problem when the motor is running. If so, crank to engine over without ignition enabled to see if it will build pressure on it's own. NOTE The oil pressure sending unit is located left rear of engine. Traditionally tuners would mount their oil pressure sending units directly to the oil filter housing which provides a quick and easy mounting solution. All Auto Meter products are proudly made in the USA to the highest standards from the highest quality materials and components to assure a long, trouble free life. Works on most car and trucks. It is important to use only genuine parts to ensure proper performance of you pressure washer. ENGINE BLOCK: Identifying the 65 400 block couldn't be simpler. Save on Lisle Universal Oil Pressure Sending Unit Socket LIS13200 at Advance Auto Parts. Oil Temperature: All of the previous with oil pressure applies as long as you use an electric gauge. still leaks. This Vintage Oil Pressure Sending Unit is designed to fit all 1987 to 1991 Jeep Wrangler YJ models. Get free standard shipping to your front door or almost anywhere when you make a $50 minimum purchase. Hey everyone. The sending unit is located on the side of the intake camshaft housing on the 2. Oil pressure gauge sending unit FIAT 124 Spider, Sport Coupe, Spider 2000 and Pininfarina - 1966-1982. Installation Instructions Transmission Oil Temperature Gauge (see www. Free Shipping with $50 purchase. Solution Replace the oil pressure sending unit. The purpose of this write up is to show the way I believe is best to install a oil pressure sensor. 4) Connect a wire from the top terminal of the oil pressure sender to position 6 of the Main Gauge connector plug. We just want to know where it is and how hard it is to change. Without it, it would be difficult to torque it down. Humming from the trunk? It is best to replace the fuel pump before it fails to avoid damaging the Fuel Pump Control Unit. Relay is SPDT and wired accordingly. Resistance of Oil Pressure & Water Temp Senders. I would replace the oil pressure sending unit. If the sending unit is leaking oil then replace it by all means. This switch fits all 6. This type of sender is supplied with Comp II gauges. Temperature gauge and water temperature sending unit for engine. Where is the oil pressure sending unit located on a 01 dodge ram 1500 5. I know where it is, I know what it looks. The Auto Meter "Ford Racing" Oil Pressure Gauge not only looks great in any Mustang, but is also a crucial part of monitoring critical engine systems. For this reason, if a customer wants me to replace the Chevy engine oil pressure sending unit I only use a Delco part. As soon as things warm up or you rev it gently for a while things are okay and it idles bobbing around 2 bars. 0, I wouldn't be concerned about wear. 96 up seperated it to a 1 wire oil light switch and a separate oil gauge sending unit. I have a 2004 GMC Yukon XL SLT 5. 5 TD specialists, a brand new HD GM transfer pump/oil pressure switch/sending unit, aka: OPS Switch. In certified aircraft how common is each connection option?. I wasnt thrilled with this option but I did give it a shot. I think different locations from OEM can put the measuring off, so prefer to add the to good spots. Type 2 has a yellow label stating "WK = Ground". Worked like a charm. RockAuto ships auto parts and body parts from over 300 manufacturers to customers' doors worldwide, all at warehouse prices. Installing the small hose and fitting would be easier with the extension but Im not sure if I would get a good reading. Will any chevy temp. I have the oil pressure sending unit that looks like the one in the pics, but I'm having trouble locating it. My Oil pressure Gage in a 4x4 1999 Ford Ranger 4. Hey everyone. Pressure sender is #4 "hydralic" thread. Symptom High oil pressure reading. 59 OMIX Oil Pressure Sending Unit for 87-91 Jeep Wrangler YJ, 84-91 Cherokee XJ with 2. Hi Wayne, thanks for the response but I think you forgot to include the links, but I think I found the gauges. Main harness wiring from alternator, starter motor, water temperature gauge sending unit and ignition coil (pull wiring free). I am going to install a oil pressure gauge and have one question. All other gauges working properly. I thought i would try the sandwich adapter. To get to it, remove the fuel filter housing and loosen the Allen bolt from the ECM harness. The QFS-A447HV is a direct drop-in 265LPH high volume fuel pump assembly for 1999-2002 Chevrolet Camaro Z28 / SS and Pontiac Firebird Formula / Trans Am LS1/LS6. The AMS Remote Oil Pressure Sending Unit Line allows you to safely mount your aftermarket oil pressure sending unit away from vibration. It some how work loose so I use a small vise-grip to turn until I could use my hand to remove the unit after cleaning wire harness, I use a1in &1/16 wrench open end that I had to cut to 4in so I could turn & tighten from the left side of car going from the top o. Apply sealing compound to threads of elbow (3) before installing on engine. in a small block Chevy with the sending unit next to the distributor. But if I went to the effort to remove that sending unit to clean it, I would just put in a new one, because it is a very inexpensive part. so it will work correctly. We just removed the stock OP sending unit and put in the one from the gauge supplier. And the only tools you'll need is an 8mm socket and a 1 1/16 deep socket and a ratchet with an extension, hopefully or preferably around 7 1/2 inches. In my situation this fixed the problem. 1998 Chevy k1500 w/ 95000 miles. Remove oil pressure sending unit (2) from elbow (3). Very interesting, so the amber oil light on instrument display that is for oil levels sensor ? i thaught that was linked with the pressure sending unit. In this video, we're going to show you how to replace the oil pressure switch in this 2002 GMC Sierra 2500 HD. Some vehicles use an oil pressure gauge in place of, or in addition to, a red oil light. Re: Oil pressure sending unit It is quite depressing. Notes WARNING: This product can expose you to chemicals including lead, sulfur, nickel, chromium, vanadium, titanium, polyvinyl chloride, and 4,4'-methylenebis (2-chloroaniline), which are known to the State of California to cause cancer and birth defects or other reproductive harm. Oil Pressure Sender / Switch Choose for Me to Minimize Cost Choose for Me to Minimize Cost Related Parts Distributor Mounting Gasket Electrical Repair Manual Oil Filter Oil Pressure Gauge Oil Pressure Sender / Switch Connector Oil Pressure Switch Socket Oil Pump Temperature Sender / Sensor. In certified aircraft how common is each connection option?. These are our new high quality reproduction 24 Volt Oil Pressure Sending Units for the M38, M38A1, M37 and other M Series vehicles. I use to pride myself on to know as much as possible about the stuff we sold and the parts for them. Using caustic chemicals such as bleach can severely harm or destroy the pump. From SSDiesel Supply TM the 6. 5 TD specialists, a brand new HD GM transfer pump/oil pressure switch/sending unit, aka: OPS Switch. The freeze plug manufacturers recommend that you do not use any sealant when installing the plugs. OIL PRESSURE SENDING UNIT ADAPTER FITTINGS These are the hard to find fittings needed when installing an electric oil pressure gauge in a small block Chevy with the sending unit next to the distributor. My '98 with 160k fairly rough miles idles around 20, hits 60 for a high, and general cruising puts it around 40-45. 2009 - 2014 Ford F150 - 2013 5. Simply remove the existing electric oil-pressure sending unit, and connect the mechanical gauge's hardware. might just fix your problem. 5l) in an F-350 4X4. Oil gauge always shows 80 lbs pressure/I have a new unit but I can't find the old unit on the engine where is the oil sending unit located? - 2003 Chevrolet Silverado 2500 HD Close. Works on most car and trucks. i have a 87 454 out of a suburban and have looked through three different manuals, on the block and CANNOT find the oil pressure sending unit. Oiling system modifications for the “FE” are traditional hot rod steps. Camaro and Firebird: How to Replace Oil Pressure Sensor. For the light sending unit LU8-007. Is there a diagram on how to do it? Thanks!. This is the How To Install Replace Oil Pressure Switch Sending Unit 1999-02 of a pic I get directly from the 2003 Chevy Avalanche Oil Pressure Sending Unit Location collection. Some gauges, such as water temperature and oil pressure can be purchased in either mechanical or electric versions. 5mm oil passage on the rear china wall of the GM LS engine block. The Porsche PET nor the 944 Parts and Technical Reference Catalog show a crush washer on the sending unit. The actual location of the sending unit makes this project a little difficult for a backyard mechanic. That makes sense. I am swapping out my Oil Pressure sending unit on the ( '78 ) 350 sbc engine, the sending unit location is just to the right of the Distributer on drivers side. Don't use teflon tape on either one for installation. Vision Black 150 PSI Mechanical Oil Pressure Gauge with Tubing Kit and Metric Thread Adapters, 12V. Bruce: The latest info. I intend to copy the practice of mounting the sender near the oil canister to make servicing and replacing the oil pressure sender much easier. Pressure sender is #4 "hydralic" thread. 5 metric to 1/8” NPT adapter is needed to install in this location. We just removed the stock OP sending unit and put in the one from the gauge supplier. m) Balance Shaft Gear Bolt Step 1 15 (20) Step 2 Additional 35 Degrees. Less than one bar when cold with warning light flashing. it has always been a tab higher than middle which i told was normal for the truck, but this morning when ever i stopped it would go. 5 metric to 1/8” NPT adapter is needed to install in this location. Oiling system modifications for the “FE” are traditional hot rod steps. Refer to the new oil pressure sending unit in the oil pressure gauge kit to help you identify the part. Oil Pressure Sensor Replacement Cost The average cost for a Jeep Wrangler oil pressure sensor replacement is between $133 and $163. (The resistance is raised as the oil pressure is increased). Tighten the oil pressure sensor to 26 ft. A six-inch extension attached to a swivel head 3/8 ratchet works perfectly for removing the Chevy engine oil pressure sending unit. By simply installing a mechanical oil pressure gauge you can tell if the oil pump is dieing, engine bearings needing to be replaced, or that you simply have too much or not enough oil in the engine. My 1981 928 seems to have low oil pressure at idle. Application. I have a 04 GTO and I would like to install a real oil pressure gauge. It shorted and blew the oil pressure sending unit and the oil level sending unit (inside the lower oil pan on a M119). The sending unit does double duty: 1. Simply replace the connectors and I’m good. The one directly on top to the left is the EBP sending unit and the one directly behind the OP sending unit threaded into the oil rail on the drivers side head is the IPC. I would still recommend that you replace the sending unit for your oil pressure and you will need your serial number of the engine when ordering. Replace if damaged. I purchased an AutoMeter oil pressure gauge for my A pillar, any suggestions on the best way to install ? I want to keep the old sending unit so my idiot gauge still works. 2L I-6 engine, the oil pressure sending unit is just right next to the oil filter, the only tool I had to purchase is the long 1 1/16 inch socket, which is made for installing/removing oil pressure sending unit. I am installing an oil pressure gauge on a 97 GT and I can't locate the factory oil pressure sending unit. The oil pressure sending unit, also called an oil pressure switch, is a component of the engine mechanical system. This is the How To Install Replace Oil Pressure Switch Sending Unit 1999-02 of a pic I get directly from the 2003 Chevy Avalanche Oil Pressure Sending Unit Location collection. I removed the oil filter and just a very little bit of oil was in the filter housing. Autometer makes really nice gages and you get everything in the kit, grommets, black split loom, hardware and of course the gauge, sending unit and wiring harness. Easy to use parts catalog. Oil Temperature: All of the previous with oil pressure applies as long as you use an electric gauge. A gauge is only as good as the accuracy of the reading; magnifying the importance of high quality, reliable senders. With integral spade terminal contact, as production fitted in Fiat 124 Spider Coupe and Lancia. The oil pressure sending unit tells you how much oil pressure is in your engine. Apply sealing compound to threads of elbow (3) before installing on engine. 1990-1993 cars were equipped with the 1. Turns out the AMS remote sending unit is slightly bigger than the stock sending unit. 1 switch or the oil pressure sending unit? people just remove the sending unit but the distr. With the key turned on and the engine not running, the gauge indicated the pressure as about 3/4 of the way up the scale. I'm trying to bring this thread back to life. McDermott specializes in building and installing large, expensive items like oil platforms and natural gas plants, a business that’s under pressure as low energy prices discourage new construction. I removed the oil filter and just a very little bit of oil was in the filter housing. A slight amount of light weight oil can be applied to the hole and the plug to make installation easier. rated 5 out of 5 by arr1950 from 0 to 100 pounds pressure transducer i have used auto meter for almost 19 years and like their products. Put 4 quarts of oil in it, before I changed out the Sending Unit, that didn't help it. If the oil pressure is satisfactory, the most likely cause is a defective oil pressure sending unit. Notes WARNING: This product can expose you to chemicals including lead, sulfur, nickel, chromium, vanadium, titanium, polyvinyl chloride, and 4,4'-methylenebis (2-chloroaniline), which are known to the State of California to cause cancer and birth defects or other reproductive harm. I want to keep the stock oil light working but install the manual line also. Replacing the oil pressure sensor will solve the problem of a gauge not correctly measuring the oil pressure within the engine. Where is the sending unit located? I removed the skid plate assuming I would find it by the oil filter but couldn't find it. The end accepting the sending unit is a 10x 1 thread, but could be any thread to match the sending unit [most now are tapered]. I bought a mechanical oil pressure gauge but now I can't find the sending unit so I can install the new one. Chevrolet Silverado 1999-2006: How to Replace Oil Pressure Switch Sending Unit When it ceases to work, a component as small as the oil pressure switch can do some major engine damage. The down fall is the excessive vibration especially at high …. I have a 2004 GMC Yukon XL SLT 5. It solved my problem. If it is, reroute it down to the oil filter, install the sending unit and your done. Did any of you guys (93/early 94) who have your oil pressure sending unit near the oil pump have to move your headers to install it? I couldn't get it to line up w/ the hole because the headers wouldn't allow it. Be carful, a Ford tech told me that if you reinstall it too tight you can crack the filter housing. Buy online, pick up in-store in 30 minutes. The freeze plug manufacturers recommend that you do not use any sealant when installing the plugs. install the oil hose back onto the Housing. It tells you if it's in normal range. Disconnect the two wire leads to the oil pressure sending unit (located just below the oil filter). If the light stays on with the engine running, stop the engine immediately to avoid severe engine damage until the cause of the problem can be determined. Is this a problem with the sending unit sending an incorrect code? Or maybe the oil pressure could be low? I'm seriously thinking of getting a gauge and testing the pressure. It relays sudden oil pressure drops to the onboard computer system, which alerts the driver that something may be wrong. He recently had an oil and filter change and it had no effect on the light. Humming from the trunk? It is best to replace the fuel pump before it fails to avoid damaging the Fuel Pump Control Unit. That's what I did. If you Google,"oil pressure sending unit failure"…. I want to keep the stock oil light working but install the manual line also. A Issued July 15, 2014. what's new (beta) - classifieds - forums - photos : SaturnFans. This is very ideal on newly built engines because you can monitor your oil pressure while you are at idle or on the road. The engine has to start to get a result. The TIM electrical gauge kit consists of the gauge with wiring. On most vehicles, the oil pressure on a hot engine at idle should be at least 8-10 PSI. that the nut with the tubing attaches to. Some oil will escape but don't worry 2, Screw in the new style twin connector sender unit until tight (but don't overtighten). Replace the Oil Sending Unit. I intend to copy the practice of mounting the sender near the oil canister to make servicing and replacing the oil pressure sender much easier. Clean the fuel pressure regulator and high pressure injection pump thoroughly with solvent, such as GM P/N 12377981 (Canadian P/N 10953463), or equivalent. The oil pressure sensor on a Cummins engine is located behind the ECM harness on the driver's side. Make sure not to drop any screws or any debris into the lines. Since I already have the boost indicator built into the DIC I was thinking of installing a oil pressure guage and Amp guage in the pod. Apply sealant GM P/N 12346004 or equivalent to the threads of the fitting and/or the engine oil pressure sensor. Temperature gauge and water temperature sending unit for engine. It seals one end as original, is the 17 mm hex as original and is plated as original. Posted in Oil pressure switch sensor, Sensors Tagged with: 5149098AA, Chrysler, oil, P0522, pressure, PT Cruiser, replace, switch 26 comments on " How to replace an oil pressure sensor switch on a 2005 2. Any tips woul. Options are available to fit most after-market sending units or mechanical gauge hoses (1/8" NPT female, -3 AN male, or -4 AN male). ** I have a 73 block with the stock filter. 96 up seperated it to a 1 wire oil light switch and a separate oil gauge sending unit. First, check your oil levels, and if it's full, it's probably has nothing to do with that. The actual location of the sending unit makes this project a little difficult for a backyard mechanic. The instructions say I must have a sending unit for the gauge to work. I just changed out my oil pressure sending unit and your Chiltons manual is spot on! It's not impossible to get to, but with a little effort, you can do it. Use with 3/8" drive or 1 1/8" hex. It seems to be buried under there, under all that mess of plugwires and stuff. For this reason, if a customer wants me to replace the Chevy engine oil pressure sending unit I only use a Delco part. It tells you if it's in normal range. The sending unit socket purchased fit the replacement sending unit, but not the factory sending unit. The light sending unit was originally on the side and the pressure sending unit was on top, but to get the pressure switch off, I had to take off the entire oil filter block. The Toyota FJ oil pressure sending unit uses a 1/8 BSP (British Pipe Thread). Has anyone installed either of these guages and how big of a job is it? How did you install the electric oil pressure sending unit for the oil pressure guage?. Low oil pressure 2 Answers. I can't figure out how to replace my oil pressure sending unit. Luckily for those who wish to rectify this situation, the fix is rather simple - All you need to do is replace the binary oil pressure sending unit with a pressure sensing sending unit and reposition the needle on the gauge. so it will work correctly. either books or a cd or dvd. If the sending unit is leaking oil then replace it by all means. You can see the blue arrow pointing to the connector - I've already pulled the wire off at this point. Need some input on an oil pressure sending unit install for my 2. everything works fine. That is why just turning over the engine with the starter will not get a result.