mechanical oil pressure sending unit

SKU # 709724 $ 75. Thread Fitting NPT 1/4 Mechanical Oil Pressure Sensor For Cummins B/C , Chaochai6102. I went ahead and installed a VDO mechanical oil pressure gauge, electrical coolant temp gauge and a double pod where the ash tray once was. Changed the sending unit with a new one from Summit. Auto Meter 4321 Ultra-Lite Mechanical Oil Pressure Gauge, Regular, 2.3125 in. Scott Drake oil pressure sending extensions are offered in a choice of great looking finishes. Part # 1321. JEGS 41240 Part Number: 555-41240. Still did not work. Grab your Sending unit that came with the O.P. The oil pressure sending unit regulates the flow of oil. The Equus 6000 Replacement Instrument Series single 2 in. The rebuilt flathead in my 51 reads 30 lbs. SELECT STORE. Postby Buffjhsn » Sun Mar 28, 2010 3:28 am. Upright oil lter module. 18x10.5 et0 245/40. Free shipping. I went to look at the truck the motor was pulled from and couldn't find anything like your describing, so it could have fallen off, or been thrown out. The Oil pressure gauge in that kit does not need a sending unit… 1990 jetta vr6'd. Mechanical Oil Pressure Gauge 72" Inch Copper Line Tubing Install Kit w/ Fitting. Engine Accessory100 Psi Oil Pressure Sending Unit , IP66 Auto Gauge Oil Pressure Sender. 99. Since 1968, West Marine has grown to over 250 local stores, with knowledgeable Associates happy to assist. $4.99 - … mechanical pressure gauge offers excellent instrumentation value featuring easy to read 270 degree sweep white on black dial artwork with high contrast orange needle, through dial backlighting, and mechanical movement for efficient monitoring of your engine oil pressure. Free shipping. ... mechanical (25) Diameter. Thinking of the obvious, I decided to change the sending unit out - surprisingly, this didn't fix the issue. Automotive. Give your Jeep or Truck exactly what it needs with industry leading products and expertise at 4WD.com. Pressure Sender: P/N 82501. Determine a mounting location for the gauge. 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. The oil pressure gauge in the dash has never worked on my 79 cherokee since I have owned it. Find Stewart Warner Gauges Mechanical Sending Unit and get Free Shipping on Orders Over $99 at Summit Racing! Oil Pressure Reporting Erratically. Oil is fed into the bulb under pressure, the same as in the vehicle engine, from a supply pipe that causes the bulb to attempt to straighten. ... An electric gauge uses a sending unit and a circuit to send electric signals to … $17.99. That means that with no pressure, the Sending Unit should have a resistance of 240 ohms. 1973-87 STD Cab 1/2 Ton & 3/4 Ton 1973-89 Crew Cab 3/4 Ton The oil pressure sending unit controls the oil pressure light or gauge depending on which you car is equipped with. When oil pressure is applied, the switch contacts either shut off the oil light or make the oil pressure gauge active. I have looked at the wiring diagram and noted that the oil pressure sending unit wire is supposed to be a purple wire. Grounded the electrical connection to the sending unit (under hood) and the gauge pegs to 80 PSI in about two seconds. New Oil Pressure Gauge Sensor for J Series Jeep Cherokee CJ7 CJ5 J10 CJ6 3212004 (Fits: Jeep CJ7) $35.33. 03-16-2009, 11:29 AM. For use with electrical oil pressure gauges, has 1/8 In. Re: oil pressure sending unit « Reply #1 on: April 25, 2015, 09:09:10 AM » Its best to figure out what brand/kind of gauge it is- autometer, s/w, faria, etc. Is it OK to drive with a bad oil pressure sensor? The oil pressure gauge typically reads 35; I've noticed lately that sometimes at idle it drops half way between 0 and 30, but right when RPM goes back up so does the pressure gauge. Mechanical Oil Pressure Sensor. 99. Oil Pressure; Oil Pressure. The relief valve may be stuck and should be checked and cleaned up. Tweet. 4.8 out of 5 stars 75. The Equus 6000 Replacement Instrument Series single 2 in. Lots of people here with a ton of knowledge and experience with these engines. The tee fitting allows you to operate on both 1/8 national pipe thread warning light sender and 1/8 national pipe thread mechanical or electrical oil pressure gauges. Electrical use a sending unit which takes a pressure reading and converts it to an electrical signal. Step 3. An oil pressure sending unit controls either the oil pressure light or gauge in your dashboard. An oil line is run to the back of the instrument which measures pressure directly. The oil pressure gauge has stopped bouncing. An electric gauge uses a sending unit … The sending still provides a signal when the oil pressure is over roughly 70 psi but quits below 60 psi. the filter is the Sending Unit for the Dummy Light that is in your dash. Order metric adapter kit (CP7573) when adapting to metric threads. A mechanical gauge uses a spring that is affected by the pressure of the oil. NOTE: It is much easier to access this piece if you simply remove the distributor cap. What I can find is a wire that was curled up near the sending unit with the "straight" push on kind of connector. Now the thread will not match (the Auto Meter S.U. The port for either mechanical or electrical installation is located about six inches behind the oil filter towards the engine. I've had a mechanical oil pressure gauge capillary tube burst, what a mess, and I was stuck because the engine lost oil pressure. A faulty oil pressure sending unit … SPONSORED. #6. Shop with confidence - get free shipping to home or stores + price match guarantee! Oil Pressure Gauge is Wrong – If you have an older vehicle, then it likely has a mechanical oil gauge in it which determines the oil pressure. ADD TO CART. Single Terminal Universal Oil Pressure Sensor / Engine Oil Pressure Switch. Any tips from senior members as to physically reaching the oil pressure sending unit? Just finished installing a new oil pressure sending unit, but still the same reading. 11. It is just a white face gauge from a mechanical oil pressure gauge kit. The typical spot to mount the oil pressure line is directly above the center of the oil filter. Est. The Oil pressure gauge in that kit does not need a sending unit… Oil Pressure Sender Unit 56031005 88924467 for Jeep Dodge Pickup Truck SUV (Fits: More than one vehicle) 5 out of 5 stars (2) 2 product ratings - Oil Pressure Sender Unit 56031005 88924467 for Jeep Dodge Pickup Truck SUV gt35, stance, etc. Whatever you do, don't pour Seafoam into anything you want to keep. Works just like a stock chevy cluster oil gauge! Step 3. The PCM is located at the inner passenger side shock tower (see third pic). New Oil Pressure Gauge For 1976-1978 Jeep CJ7 CJ5 (Fits: Jeep CJ7) $55.01. On the other hand, if the level is between “add” and “full,” and then engine was running quietly, you could have a bad oil pressure sending unit, light switch, or oil pressure gauge. You can safely drive home and have this fixed, but if the engine starts to sound noisy, stop immediately and call for a tow truck. Its dimensions measure 1/8l x 1/8w x 1/8h and the nipple measures 1/8. I install a oil pressure gauge in my 1982 Rv, the dash gauge stopped working so I replaced it with an aftermarket, If you have a mechanical gauge there is no sending unit - just a tube that runs from the engine to the back of your gauge. AutoMeter Arctic White 2 1/16in 0-100 PSI Mechanical Oil Pressure Gauge. Engine Accessory100 Psi Oil Pressure Sending Unit , IP66 Auto Gauge Oil Pressure Sender. Oil pressure regulation valve N428. it is 3/8's pipe thread. Standard Delivery. Air circulation system 4.5 out of 5 stars 10. The car came with an electronic oil pressure gauge that did not work. Home Delivery. A mechanical gauge uses a spring that is affected by the pressure of the oil. Look closely at your engine for a round, copper colored object about 2 inches long and as big around as a quarter. ( 1 ) Estimated … So he replaced the oil pressure sending unit again and so far so good. Oil pressure sender unit works on all Sunpro mechanical oil pressure gauges. 2. Part # 1321. SPONSORED. Grab your Sending unit that came with the O.P. $10.69 $11.79 ... JEGS 2-5/8" Mechanical Oil Pressure Gauge 0-100 psi. AutoMeter Arctic White 2 1/16in 0-100 PSI Mechanical Oil Pressure Gauge. I would have gone with the Duralast sending unit had the local Autozone’s internet not been out (cash only). Oil Pressure; Oil Pressure. Mechanical [0-100 psi with Silver Face] $31.99 $34.99 JEGS Universal Oil Pressure Gauge Adapter 1/8 in. I feel now that fully mechanical is the way to go. If it breaks in the passenger compartment, can you imagine the mess? Home Delivery. 1979-1989 FORD MUSTANG OIL PRESSURE SENDING UNIT EXTENSION & ALSO FITS 1967-1973. The oil pressure switch is used for the light. The oil pressure should go down some when warmed up. Touch the black & red test leads across both wires from the Sending Unit. The most important next step you can take, as has already been suggested, is to put a mechanical oil pressure gauge on that engine and crank it but take out the fuel pump fuse and relay so it won’t start. If that does not do it, you may have to pull the pan and oil pump and pull the cover off of the oil pump to get to the pressure relief valve. the filter is the Sending Unit for the Dummy Light that is in your dash. Sending Unit Electrical (5) Mechanical (1) Fitting Material Aluminum (1) Brass (1) Stainless steel (1) Steel (3) Hose End 1 -3 AN (3) ... JEGS Mechanical Oil Pressure Gauge Installation Kits. 99. Only 1 left! If the gauge reading shows “0” and yet, your oil levels are completely normal, then it must mean that your oil pressure sensor is bad. Standard Motor Products PS60 - Standard Motor Oil Pressure Gauge Sending Units. These hex shaped extensions are made from machined metal and are crafted for durability and quality. I recently noticed that my factory oil-pressure gauge needle was bouncing like it was on crack when the engine was warm while idiling or driving at low RPM's. Just be careful when you remove it as some oil will come out. Don't take chances with old, questionable, or faulty Order metric adapter kit (CP7573) when adapting to metric threads. The Price Of Progress Is Trouble! This is a great spot on the engine to get a really precise reading for the oil pressure gauge. Well my oil pressure gauge has been at the 2/3 mark ALL the time for the last few months. Actron SP0F000052 Bosch Style Line 2" Mechanical Oil Pressure Gauge (Black Dial Face, Black Bezel) 4.6 out of 5 stars 380. Since 1968, West Marine has grown to over 250 local stores, with knowledgeable Associates happy to assist. 3. Type: Pressure sender (Dual gauge) Pressure: 100 PSI Match: 120-16 ohms Thread: 1/8″ NPTF. I know those because my readings were getting worse and worse (lower and bouncier)… but a mechanical pressure gauge revealed that the sending unit had been wrong this entire time. This will not work with that unit unfortunately since it is a mechanical gauge and not an electric gauge. Free In-Store or Curbside Pick Up. AutoMeter Arctic White 2 1/16in 0-100 PSI Mechanical Oil Pressure Gauge $ 75. Yes you can replace it without draining the oil. 1988 300zxt. Then I disconnected the wire from the sending unit, grounded it, and observed the oil pressure gauge move fully to the right. ... Oil Pressure Sending Unit (4) $37.99. Re: Oil Pressure Mechanical gauge Oct 28 2012, 2:54am Thats it Mike..thanks..i checked Summit and that is the animal i need only i need a tee to accommodate the factory sending unit as well but i can find it through a local shop now..thanks for your help! I found an adapter fitting for the oil pressure gauge, drilled and tapped the pipe threads and have it screwed directly into the extension. For example, if lower than normal oil pressure is detected, the pressure sensor will make the gauge in the car reflect an Oil Pressure Warning Light. This is perhaps the most telltale sign of a malfunctioning sending unit. For further information and to locate a dealer On the other hand, if the level is between “add” and “full,” and then engine was running quietly, you could have a bad oil pressure sending unit, light switch, or oil pressure gauge. $4.99 - $15.09 Shop Now. A coiled tube, called a bulb, attaches to the oil pressure gauge's outer casing and to linkage at the bottom of the needle. JEGS 41240 JEGS 2-5/8" Mechanical Oil Pressure Gauge 0 … Oil Pressure Gauge 100PSI Fits Jaguar XJ6 & XJ12 Smiths Brand ACP2203/02. ( 16 ) So your best bet would be to measure the voltage at pin 57 and see if ist in the range your ProSport needs it. I recently replaced the engine oil and filter and I check the level once a week and it's perfect, so it's not oil … 99. Installed a mechanical oil pressure gauge, 35 … 4.7 out of 5 ... ICT Billet Oil Pressure Sensor Relocation Adapter Port LS LSX M16-1.5 Sending Unit LS1 LS3 LS2 LQ4 LQ9 LS6 L92 L99 L33 LR4 Designed & Manufactured in the USA 551534. To find it, remove the passenger side front wheel. Est. Mechanical Oil Pressure Sensor. 191651 Audi 3.0L Supercharged.indd Sec2:11. Verified all electrical connections including that the body of the sending unit is grounded. Oil Pressure Sender/Switch, OEM Replacement, AMC, Ford, Jeep, Lincoln, Mercury, Pantera, Each. gauge. SKU # 709724 $ 75. is not suitable for your application. Autometer 2268 is the adapter you need to convert your Ls style M16 metric oil pressure sensor boss to traditional 1/8th NPT. Wheels: Varrstoen ES2 18x9.5 et-13 225/40. This will not work with that unit unfortunately since it is a mechanical gauge and not an electric gauge. The wire leads look frayed and the terminals are dirty. Product description This brass oil pressure tee adaptor includes a national pipe thread tee and nipple. There is two type of gauges which are mechanical and electrical. 2 birds, 1 stone. Another option for oil pressure is to remove the cover plate right above the oil filter and then drill and tap it. Dual (9) Single (66) Single Scale (2) Max Range Outer Scale. Attaching a mechanical pressure gauge would tell you what the real pressure is. it is above the filter so it should be after the filter. Sounds like a stressful situation and some bad luck thrown in. Delivery June 17-18. Only 1 left! Set your meter to the "2k" ohms scale. The original Ford part number for this is C2OZ-9B339-A. Oil Temperature: All of the previous with oil pressure applies as long as you use an electric gauge. Electronic Oil Pressure Gauge Mechanical Oil Pressure Gauge. NPT thread adapter. It would be common for a Ford 200 I6 to run a steady 40 psi and make it seem like the gauge may be sticking in one spot. Sunpro 2" Mechanical Oil Pressure Guage Carbon Fiber Installation Kit 4701. The sensor for the oil warning light is screwed into the union or T-piece at this point, whether or not the car is fitted with an oil pressure gauge. There is no ground wire needed on the oil pressure sender, it grounds through the body of the unit. The gauge monitors the oil pressure in one of the main oilways near to the pump and filter.To do this it has a tapping in the engine block, into which is screwed a sensor (for electric gauges) or an oil pipe take-off (for mechanical gauges). On the mechanical engine the oil psi gauge is a mechanical gauge. I'm putting headers on the car so I will have to plumb something up to clear them with the oil pressure sending unit near the oil filter. It sends the oil pressure information to the car’s computer, which then controls the related lights and gauges. Oil pressure sender unit works on all Sunpro mechanical oil pressure gauges. #2. NPT threads and 1/4 In. It’s for this reason that we do not recommend installing mechanical fuel or oil pressure gauges inside the cabin. My electronic oil pressure gauge is 15-20 psi off of what 2 manual gauges tell me it has (both manuals were within 2-3 psi of each other). If you have the right sending unit, replace it and try again. When it detects oil pressure in the vehicle, a switch trips and either the light shuts off, or the gauge becomes active. There is also a plug in the block in front of the normal oil pressure sending unit location (about 2 inches). The engine runs fine as it did before. It may run into a block located behind the speedo/tach for the kysor alarmstat sender then from there to the gauge. Oil cooler. Automotive. Unltered oil port Clean oil port Self-regulating oil pump 437_073. FREE SHIPPING on Orders Over $99! of oil pressure when measured with a mechanical gauge. or 1/2 In. Re: Stock BBC block Oil Pressure Port Question. The 120 PSI gauges are used with diesels & … Single Terminal Universal Oil Pressure Sensor / Engine Oil Pressure Switch. The oil pressure gauge in my 66 coupe has always read on the low side. Very Good Used OE Smiths Oil Pressure Gauge MGB MGBGT 72-76 Mechanical Gauge ... Free shipping. As an aside, I bought some electric sending unit aftermarket gauges and I'm not happy with them. Actron SP0F000052 Bosch Style Line 2" Mechanical Oil Pressure Gauge (Black Dial Face, Black Be… MOELLER. Is the electrical wire/clip actually attached to the middle part of the sending unit? The oil pressure gauge in the dash has never worked on my 79 cherokee since I have owned it. It will not move as pressure increases or decreases. Due to its thinner profile, the sending unit from the full sweep electric gauges threads right in. 97 3500, 2 WD, G56, slightly bombed, 1.4 million miles with un-additized diesel fuel. A properly installed gauge should be reliable no matter what type of gauge it is. View as List Grid. LS Engine Swap M16 1.5 Adapter to 1/8 NPT Mechanical Oil Pressure Sensor LS1 LSX LS3 Gauge 551172 for GMC Chevy Oil Pressure Switch. However if there’s a failure, mechanical gauges can cause much more damage than electric gauges. Part # Description Application Reqd Price Stock Status QTY. Dual (9) Single (66) Single Scale (2) Max Range Outer Scale. My gauge shows low pressure but I'm inclined to think that the sending unit is giving a false reading. Delivery June 17-18. Just check your oil level after you're done to be sure as well. I have the peace of mind that the cam sync has been replaced after 107,000 miles and I am $600 lighter but not afraid of the engine seizing. He says that the normal oil pressure line spot is in the way of his Z bar. Disconnect the wire from the sender. Oil pressure sending unit is one of the least used terms actually and you'll likely hear oil pressure switch or oil pressure sensor more often. Confusingly, all three do basically the exact same job. In the most technical terms, an oil pressure sending unit should move a gauge on your dashboard while an oil pressure switch should turn lights on. Gauge, Pro-Comp, Silver Face, Oil Pressure, 0-100 psi, 2 5/8 in., Analog, Mechanical, Each. $12.95. The location varies based on the vehicle. This pressure is what moves the oil pressure needle on your dashboard showing the oil pressure level in the engine. I've never had a problem with electric oil pressure gauges, the Autometer Electric work great, responsive, accurate and come in a variety styles. Now the thread will not match (the Auto Meter S.U. 1. Part … $10.69 $11.79 ... JEGS 2-5/8" Mechanical Oil Pressure Gauge 0-100 psi. Following some guidance on this site, I first hooked up a mechanical gauge to verify that the oil pressure was good. The 60 PSI is correct for the M37 & all vehicles with gas engines. Placing it as close to the pump as possible ought to give him the best "true" oil pressure for the motor as it is before almost everything (crank, cam, HPOP, engine oil galleys) and not just the HPOP. The specs for my 1975 351 is 80 psi cold at idle and 80 psi hot above 1500 rpm. Thanks for the advice and comments you folks sent. NPT threads and 1/4 In. Popular. Whether you have a mechanical or electric gauge you should put a "master" oil pressure gauge on the engine to see what the pressure actually is. Order reducer bushing adapter kit (CP7553) when adapting to 1/4 In., 3/8 In. Shop, read reviews, or ask questions about Sending Units at the official West Marine online store. View as List Grid. The oil pressure sending unit is on the manifold side of the engine below the manifolds on the block either on or in between cylinder 3 or 4 (I can't remember) it projects out of the block and it is a small stamped steel cup shaped part sometimes bare or with a black or orange rubber boot on it. JEGS Mechanical Oil Pressure Gauge Installation Kits. Just behind it is the factory oil pressure switch. Your meter is now set to read 0-ohms to a maximum of 2k ohms (or 0.00k - 2.00k on your 3-digit display). I was told it was a bad sending unit. AutoMeter 4621 - AutoMeter Pro-Comp Silver Face Gauges. remove oil sending unit and temp install a mechanical gauge and see where your oil pressures are and compare back to the original gauge to know where your pressure is. (See below for oil pressure gauge.) Shop, read reviews, or ask questions about Sending Units at the official West Marine online store. $102.78. shipping: + $7.99 shipping. gauge. 2 1/16 in (75) 2 5/8 in (2) Dial Scale. A how to video on how to make your dummy oil gauge not so dummy! 's threads fit a Domestic vehicle). Tweet. 's threads fit a Domestic vehicle). 2. REMOVE that Sending Unit, you will not need it anymore. NPT thread adapter. 1. It will have a wire connected to the end of it. hope this helps you. I guess I could keep it like factory using the switch at the distributor and the oil pressure sending unit near the oil filter for the dash - factory oil pressure gauge. Mechanical Fuel Sending Units (2) $89.99 – $99.99. JEGS 41240 JEGS 2-5/8" Mechanical Oil Pressure Gauge 0 … SELECT STORE. I put in a new sending unit, and that fixed it. Free shipping. Using a mechanical oil temperature in this location is not recommended due to … Choose a … Free shipping. ... Any one of these can be used for an oil pressure guage, but probably the middle one would be the best, as the next one back is close to the engine mount. mechanical pressure gauge offers excellent instrumentation value featuring easy to read 270 degree sweep white on black dial artwork with high contrast orange needle, through dial backlighting, and mechanical movement for efficient monitoring of your engine oil pressure. Part Number: ATM-4621. I did not know this at the time though. ... As it's a mechanical pressure gauge, there is no sending unit involved. 2 1/16 in (75) 2 5/8 in (2) Dial Scale. Placing it off the port by the filter would only see a drop in oil level at oil changes and second he's choosing to use a mechanical gauge. I took my factory lead off and simply grounded it to the block, oil pressure gauge reads in the middle of the "normal" section now. from the RockAuto catalog for an oil pressure sending unit, gauge type: Thread Size 1/4-18 NPTF Dryseal 0-4 PSI - Open Ckt 4-8 PSI - 24-36 Ohms 90 PSI - 8.5-17.5 Ohms Alternate/OEM Part Number(s): 3241716, B7T9278A, B7TZ9278A, C5TZ9278B, C6SZ9278A, C6SZ9278B, C9ZZ9278A, D9TZ9278A, D9ZZ9278A, D9ZZ9278B, E4ZZ9278A, E4ZZ9278B, E6ZZ9278A, PS4 Free In-Store or Curbside Pick Up. Recently, it stopped working. Compare. There is room (especially if you plan ahead) to install an oil pressure, and 1/8”npt oil temperature port on the same cover plate. JEGS Replacement Oil Pressure Sending Unit for JEGS LED Oil Pressure Gauges. 1988 AMC 360 so the machinist, and myself assumed it was for the oil pressure sending unit. You will see the filter. ... mechanical (25) Diameter. JEGS 41240 Part Number: 555-41240. It was needed due to the larger size of the gauge sending unit. REMOVE that Sending Unit, you will not need it anymore. This is what they all eventually do whether brand new out of the box, a month old, or over a year old. NPT Male x -04AN Male JEGS Oil Pressure Gauge, 2 5/8 in. What I can find is a wire that was curled up near the sending unit with the "straight" push on kind of connector. For use with electrical oil pressure gauges, has 1/8 In. 3. Order reducer bushing adapter kit (CP7553) when adapting to 1/4 In., 3/8 In. I checked the oil level and everything has been fine. Gauge, Oil Pressure, Green Line, 0-100 psi, Analog, Mechanical Sender, 270 Degree Sweep, Kit. AutoMeter Arctic White 2 1/16in 0-100 PSI Mechanical Oil Pressure Gauge $ 75. ADD TO CART. This voltage is altered by the sensor depending on the actual oil pressure meassured and sent back to the PCM at pin 57. Part Number: SMP-PS60. Locate the oil pressure sending unit on the engine. You will need to top up your oil, and again, you can safely drive home. Your Engine Oil Pressure Gauge source with low prices and FREE shipping on orders over $99*. For oil pressure gauges, a T-fitting (sold separately) may be used to accommodate the new gauge sending unit, and to keep the vehicle's original sender operational. 06-13-2013, 12:12 PM. Actron SP0F000033 Bosch Custom Line 2" Mechanical Oil Pressure Gauge. There should be a #4 stratoflex line from the oil filter base through the cab to the gauge. and get the sending unit … or 1/2 In. I have looked at the wiring diagram and noted that the oil pressure sending unit wire is supposed to be a purple wire. Standard Motor Products oil pressure gauge senders are designed to exceed OEM specifications for dependable, accurate, maintenance-free operation. AutoMeter’s Mechanical Oil Pressure Gauge utilizes the most advanced bourdon tube meter movement on the market to deliver accuracy and durability you won’t find anywhere else. We will provide you with best prices on top name brands! ... An electric gauge uses a sending unit and a circuit to send electric signals to … Mechanical is what the 72 Corvette used and electrical is what most modern cars use. yes it is an oil pressure port. Thread Fitting NPT 1/4 Mechanical Oil Pressure Sensor For Cummins B/C , Chaochai6102. 2/16/2009 11:12:36 AM Air Supply. Standard Delivery. I had funky water temp readings until I … You could have a bad oil pump. 7. JEGS Replacement Oil Pressure Sending Unit for JEGS LED Oil Pressure Gauges. An oil pressure sending unit controls either the oil pressure light or gauge in your dashboard . When it detects oil pressure in the vehicle, a switch trips and either the light shuts off, or the gauge becomes active. A faulty oil pressure sending unit can result in inaccurate oil pressure readings and warnings. Nov 1 2019