Question about 2003 Buick Rendezvous

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Oil pressure light stays on .engine is running good .why is the light on?

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  • Buick Master
  • 6,826 Answers

Check the oil pressure sensor and the wiring to it.

Oil Pressure Sensor Removal & Installation 3.4L & 3.5L Engine To Remove:

  1. Disconnect the battery ground cable.
  2. Raise and safely support the vehicle.
  3. Disconnect the electrical connector from the oil pressure sensor. oil pressure light stays on .engine is running - chev_vent_op-sen.gif

  4. Remove the oil pressure sensor from the engine.
To Install:
  1. Install the oil pressure sensor on the engine. Tighten 12 ft-lb (16 Nm).
  2. Connect the oil pressure sensor electrical connector.
  3. Lower the vehicle.
  4. Connect the battery ground cable.
  5. Start the engine and check for leaks.
3.6L Engine To Remove:
  1. Disconnect the oil pressure sensor electrical connector. Oil pressure sensor 3.6L gm-04-36-2519.gif

  2. Remove the oil pressure sensor.
To Install:
  1. Install the oil pressure sensor. Tighten 15 ft-lb (20 Nm).
  2. Connect the oil pressure sensor electrical connector.
  3. Check for leaks.
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Posted on Aug 07, 2010

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Posted on Jan 02, 2017

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  • 202 Answers

SOURCE: 2002 Chrysler Sebring Oil pressure light

Could be a bad oil pressure switch, or a bad oil pump. Both will cause this issue. Hope it is the switch b/c the oil pump is a costly repair.

Posted on Mar 26, 2009

  • 6 Answers

SOURCE: 2000 toyota corolla ve engine will run at idle but

Install a new mass air flow meter i own this car ive had this issue with my own and several others

Posted on Jul 25, 2009

  • 1129 Answers

SOURCE: STOP ENGINE-LOW OIL PRESSURE LIGHT COMES ON AFTER INSTALLING NEW

The idle may be to low or the motor is just old and a new set of rod bearings is need with an oilpump to bring the pressure back up.

Posted on Jul 14, 2009

RonPark
  • 855 Answers

SOURCE: 03 gmc envoy with 5.3 140000 miles. Oil pressure

There may be a loose wire or the gauge or sending unit may be going bad. The first thing I would do is to hook up a temporary oil pressure gauge, not using the old one at all. With this watch gauge while driving and see what readings you get. If the readings still jump around you have a pump that is getting weak and failing, If that is the case the pump should be replaced, but with high milage you may consider rebuilding the entire engine. If the readings stay normal start checking for a loose wire at gauge or sender. Then check sender, then gauge and replace as needed.

Posted on Oct 02, 2009

  • 245 Answers

SOURCE: OIL PRESSUE LOW

You probably have a bad oil pressure sending unit or a bad connection to it.

Posted on Feb 18, 2010

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Where is the oil sending unit on a 1996 mercury cougar xr7 ? Its cause my oil pressure gauge is bouncing up and down...i dont know why...can anybody please help me thank you so much


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The low oil pressure warning lamp will illuminate anytime the ignition switch is turned to the ON position without the engine running. When the engine is running, the light also illuminates if the engine oil pressure drops below a safe oil pressure level. To test the system, perform the following:
If the oil pressure light does not work, perform the following:
  1. Turn the ignition switch to the ON position.
  2. If the lamp does not light, check for a broken or disconnected wire around the engine and oil pressure sending unit switch.
  3. If the wire at the connector checks out OK, pull the connector loose from the switch and, with a jumper wire, ground the connector to the engine.
  4. With the ignition switch turned to the ON position, check the warning lamp. If the lamp lights, make sure the oil pressure switch is properly grounded in the cylinder block, and if so replace the oil pressure switch. If the lamp still fails to light, check for a burned out lamp or disconnected socket in the instrument cluster.
To diagnose an oil pressure light that stays on, perform the following:
  1. Check the engine oil level and top off as necessary. If the engine was 2 or more quarts low on oil, test start the engine after topping off the oil level and recheck the oil pressure light operation. If the light stays on, stop the engine immediately and go to the next step.
  2. Disconnect the wire at the sending unit, then turn the ignition switch to theON position. If the light remains on, check the wire from the sending unit to the gauge for being shorted to ground and repair as necessary. If the light goes out, turn the ignition switch OFF and go to the next step.
  3. Replace the oil pressure sending switch with a known good switch.
  4. Start the engine and check the oil pressure light operation. 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.

WARNING
If the oil pressure light remains on while the engine is started, stop the engine immediately. Do not operate the engine until the cause of the problem can be determined. Operating an engine with low oil pressure will cause severe internal damage.

Possible causes for an oil pressure light to stay on are:


Pinched or grounded sensor wireDefective oil pressure sending unitRestricted or severely leaking oil filterExcessive internal engine bearing clearance.Insufficient or severely contaminated engine oilBlocked oil pump pickup screen or severely worn oil pump

Mar 31, 2016 | Mercury Cars & Trucks

2 Answers

Why does oil light stay on when oil level is okay?


The oil light is not an indication of oil level; rather it is an indication of oil pressure. If the oil pressure is low enough to light the oil light, you should be hearing some rattling in the engine. Otherwise, it is possible that the oil pressure sending unit is defective. You are lucky if that is the case, because some vehicles are wired that if the oil pressure sensor indicates low pressure, the engine will shut down to protect itself. You should have the oil pressure checked with a mechanical gauge ASAP and take whatever corrective measures are necessary.

Feb 15, 2016 | 2006 Isuzu Ascender

1 Answer

Oil light stays on when engine running


Check the actual pressure, with a guage.
This is usually done via the oil pressure switch hole. It the engine has fewhoudrs then the oil bypass valve is stuck in the open position.
This is located inside or as a part of the oil pump itself.

Sep 14, 2014 | Cars & Trucks

1 Answer

Check oil light stays on


Your vehicle may have an "oil level" sensor built into the oil pan. If so, and the sensor is bad, the dash will constantly tell you that the engine needs more oil even if it does not. Checking the oil with the dipstick, a minute after the engine has been turned off on level ground is always the best way to check your oil. Try scanning the vehicles computer systems to see if there are any fault codes. The warning light may also be on a timer that just needs to be reset. The "Check Oil" light should be separate from the engine oil pressure warning light. As long as the engine oil pressure light stays off, you should be ok. Checking the oil pressure with a manual gauge would be a good idea as well.

Apr 23, 2014 | 1999 Toyota Corolla

1 Answer

1988 toyota 4x4 pickup check oil light is staying on. checked oil level and was full.why does the light stay on


It means your oil pressure is too low to safely run engine. Causes might be a worn oil pump, a failed oil pump gasket, clogged oil passages from sludge, or badly worn crankshaft bearings.
If your toyota is not burning oil, or very little, I would take a look at the oil pump on your engine. After removal, they can be checked (and repaired) with a feeler gauge for proper working condition, but most people just replace with new.
If you want to be certain about the pressure reading, you can check pressure with a mechanic's oil pressure gauge. You have to run the engine just long enough to get a good reading on the pressure gauge, a moment or two.

Nov 30, 2011 | Cars & Trucks

1 Answer

Oil light blinking


there is always the possibility that you really have low oil pressure when you get this light, at idle the engines oil pump produces the least pressure and if there are problems then that is when it shows up, so have the oil pressure tested by a shop with a mechanical test gage, if the oil pressure is within spec then replace the oil pressure light sending unit on the engine, I don't recommend you drive this until u are sure of the pressure, u can SEVERELY damage the engine is the pressure is really low.

Jun 23, 2010 | 1993 Honda Accord

3 Answers

Oil light on when oil is full


a loose connection WILL NOT cause flickering oil light unless your your oil is empty at the same time a connector is loose. This flickering is most likely caused by clogged oil ports or failing oil pump. When this happens there is insufficient oil running through the engine, causing the sensor to activate the light intermittedly. Have this checked immediately to prevent extensive engine damage. Hopefully this helps!!

Mar 20, 2010 | 1998 Toyota Camry

1 Answer

Red oil light stays on 1/10 of mile after starting engine


Did you check the oil level?? Which i am guessing you did, it everything is running good and no change in engine performance or bad noise's coming from the engine. Then it's going to be your oil pressure sending unit, the oil pressure sending unit is inexpensive and you can pick it up at Auto Zone far less then the dealer and Auto zone will have the step by step instruction to replace the oil sensor. It's going to take just under an hour or less depends on how long you want to let the engine cool down before you work on it. Good luck and hope this helps. keep me posted, be glad to help.

Jun 08, 2009 | 2003 Chevrolet Express

2 Answers

Check oil light


Try a new sender unit.

Jan 19, 2009 | 2001 Ford Escape

4 Answers

The oil pressure light goes on and off intermittently.


I had a similar problem with my 2003 Sante Fe (intermittant problem, the light went off when I accelerated). I took it to the dealership. They looked for a bad send oil switch (not the problem) as well as some other possible culprits but could not, at first, find what was causing the light to come on (but they did confirm that I had low oil pressure). So, they took the engine apart. What it was was the pan was "dented" upwards, so that less oil was able to come in. It wasn't the bearings. It wasn't the crank case. It wasn't the oil pump. So, they fixed the dent, put everthing back together and . . .it worked! The light went off and stayed off. It cost $337 in labor. I was very very very relieved.

(Apologies if this explanation is hard to follow-I'm no mechanic and am basing my response on my understanding of the mechanic's explanation).

Dec 03, 2008 | 1987 Hyundai Excel 4-Door

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