Question about 1998 Pontiac Sunfire

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I have a 2001 pontiac sunfire oil pressure light problem

My oil pressure light comes on when the car is warmed up and the idle drops below 600 rpm

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  • Joseph OBrien Jul 30, 2008

    solved this problem, it was a leak down by the oil pressure sensor switch.



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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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MikenAsh
  • 32 Answers

SOURCE: 2001 pontiac sunfire

It sounds like there is a short in the switch that turns the interior lights on beside the headlight switch. You might be able to get a switch after market from your local auto parts store. Possibly with it being an 01, it would be a dealer item. Try calling parts store/dealer to see if you can locate one. Hope this is helpful. Please rate. Thanks

Posted on Sep 28, 2008

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SOURCE: 2001 pontiac sunfire serpentine belt diagram

go to autozone.com and it will give you the belt diagram

Posted on Jan 16, 2009

  • 49 Answers

SOURCE: ticking noise and low oil pressure

DOES IT HAVE A LOT OF MILES ON IT OR MAY BE THE OIL PUMP IS IS GOING OUT? THERE IS A SPRING IN THE PUMP THAT IS A BYPASS FOR HOW HIGH PSI IT MAY HAVE BROKE THAT WILL GIVE YOU LOW PSI.

Posted on Jan 18, 2009

  • 1 Answer

SOURCE: 2001 v6 escape rough idle when cold

To update my earlier repair on the 2001 6 cyl Escape: When cold, and when the ignition was turned over but no accelerator pressure given, the rough idle finally returned the P0303 code again when the check engine light came on indicating that it wasn't caused by the plugs or the coil. FYI, I had replaced the intake manifold gaskets during the original repair and just prior to that I had replaced the fuel filter which was very dirty (I cut it open to see).

The repair manual referred to fuel injectors as a possible problem. I have run three tanks of fuel using different injector cleaning products and am very pleased with the results. Cold starts are much smoother and I am unable to coax out the P0303 code or any other code.

My opinion, change the fuel filter, use a fuel injector cleaner for a couple of tanks, change the plugs if the problem still exists. The coils were not the problem on my vehicle.

Posted on Mar 09, 2009

  • 2 Answers

SOURCE: Oil light keeps coming on at an idle

ok. oil ight is probably nothing more than a faulty pressure switch.You can have pressure checked at same screw in port. 15psi is ok...just. very cheap to replace. Ign control module is probably the cut-out fault. You cant really test it; repair by substitution is the trick.

Posted on Apr 08, 2009

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1 Answer

My rpm drops to 500 when in idle mode after its warmed up and then oil light comes on


500 rpm when not in gear seems a bit low but not ridiculous. Oil light comes on when oil pressure is too low. Is your oil very old, do you fail to change it ever. Or your idle speed just isn't high enough to maintain pressure. You may need a new oil pump.

Feb 05, 2015 | Cars & Trucks

3 Answers

Oil light on after engine warm-up on idle


this means a mechanical gauge test is required to check actual pressure warm idling if low below 20 psi then the oil pressure pump relief is stuck open or engine bearing are worn

May 15, 2014 | 2005 Opel Astra 1.4

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2002 jeep liberty v6 3.7 l , oil light keeps coming on at idle at stop light. had engine flush and oil change and sender pressure unit changed out, but it keeps coming on. could it be a connector into...


Have a reputable garage check the oil pressure with a manual oil pressure gauge. Very well may have worn internal parts, or weak oil pump. Thats the only way to know for sure.

Oct 21, 2011 | 2002 Jeep Liberty

1 Answer

Alrighty. I've asked this a few times before, I have more info now. CHEVY 350 K1500. 1993. Replaced intake gaskets, (bad oil leak) dropped a small amount of coolant in with oil while doing so. Changed oil...


how did you clean the gasket off of the head? if you used a sanding disc the grit will eat up the bearings. are you reading pressure with a mechanical gauge? you have replaced all bearings??

6 psi @ 1000 RPM
18 psi @ 2000 RPM
24 psi @ 4000 RPM
this is chevrolet specs on oil pressure in your truck so you are within the range.

describe your idle problem more and i will try and help you with that

Feb 02, 2011 | 1993 Chevrolet K1500

3 Answers

Oil Pressure Light Comes On after 10 min of Driving


You may not have put the right amount of oil in your car, your oil pressure sensor could be faulty, or you may have a leak.

By revving your engine, you're increasing the pressure and thus turning off the light and making the sensor think that it's at the correct pressure.

Sep 08, 2009 | 1998 Chevrolet Malibu

1 Answer

Engine knock hard over 2500 rpm


Does the oil light come on or the knock occur during the engine warm up after a cold start?
There could be a couple of problems causing the issue. You could have an oil pressure pump or pump pressure regulator sticking. I would have a mechanical oil pressure gauge installed and verify oil pressure at idle and 2500 rpms to make sure oil pressure is in normal ranges.
You could also have excessive piston rod bearing, crankshaft bearing or cam shaft bearing wear that will cause oil pressure to drop too low to prevent the rod knock your hearing at 2500 rpm.
You said a knock and not a ticking noise,so I don't believe a lifter is the issue at 2500 rpm.
Start with the oil pressure check and go from there.
Let me know.
Regards,

Aug 22, 2009 | 1996 Dodge Stratus

2 Answers

Oil light comes on at very low rpm


It IS NOT Advisable to Drive this Vehicle Untill This Problem is AT LEIST DIAGNOSED, You Need A MANUAL OIL Pressure TEST, to Determine If OIL PRUSSURE is SAFE @ >>Oil Pressure at idle speed with engine at operating temp.min. bar 0.5 Regulated Pressure bar 4.3
If it Is ok First On List Is Oil Pressure Sensor But if it's Low> Replace
Oil PUMP
Obviously Inspect Wires To Sensor / Sensors Before High Dollar Parts Are Resorted to.

Aug 04, 2009 | 1999 BMW 318 ti

1 Answer

2004 Dodge Intrepid "jumps" occasionally when braking?


if your car has the 2.7 litre you have to change the oil every 5oookm or 3000 miles and use the exact grade as per the book.
the 2.7 has small oil galleries.
you have low oil pressure and or idle speed.check the rpm and it should be 700 unloaded at warm temp.if the iac controller is bad and there is low idle,really low rpm could trigger the oil light to come on and the transmission vacuum controls will be causing strange behavior.

May 04, 2009 | 1999 Dodge Intrepid

1 Answer

Low oil pressure at idle


how low does the oil pressure drop?? is it below 40?

Mar 05, 2009 | 1990 Ford F150

1 Answer

Oil Pump light flickering + rough idle on 1996 Nissan Maxima


Sounds more like the Throttle Position Sensor or another sensor is letting the engine RPM's drop too low. When the RPM's are too low, the oil pump is not pumping enough oil.

Feb 26, 2009 | 1996 Nissan Maxima

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