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How come in my 91 Camaro rs my oil pressure gauge drops to zero?

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It sounds like you oil is going out or the oil pump screen is stop up,check to see if your gage reads 40 to 60 lbs when its cold then if it does it could be oil pump or cam bernings but find a oil pressure gage to see if it might be your gage be bad or oil pump good luck...

Posted on Oct 29, 2012

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Pull your oil pan immediately and check your pickup screen, it may be clogged with sludge. This is an easy fix, and it may not be too late to save the engine. If the engine is not making any noises, it's very likely OK at this point, but it's not a good idea to drive it like this. If your engine has sludge, get a couple quarts of kerosene or diesel and put that in there with some oil and let it idle for a while, it should dissolve most of the gunk, then change your oil again.

Posted on Oct 29, 2012

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Posted on Jan 02, 2017

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SOURCE: oil pressure gauge drops to

The Oil Pressure switch is notorious for going bad on Dodge truck. I recently change out my oil pump on a 5.2 L engine only to find that I had a faulty switch. The switch for a 5.2L is only 16.99 at autozone and is less time consumming than replacing the oil pump.

Posted on Jan 15, 2009

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SOURCE: drop in oil pressure

The oil sending unit could be bad, or the pressure relief valve in the oil pump is malfunctioning.

Posted on Jan 28, 2009

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SOURCE: Oils pressure gauge fluctuates

check the oil viscosity,it might be too old(driven for toomany miles)..

if thats not ityou might need to get the oil preasure lubricating pump checked,and id suggest you do it fast or theres a lot of engine wear and tear.

Posted on Aug 05, 2009

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SOURCE: oil pressure gauge goes up when car started, but then down to 0

u Have a problem with the oil sending unit. The sensor is located beack right side of the engine block. Take out the switch and make sure u have good oil PSI. Should be 6 psi at idle and around 50 at 4000 RPM. If the presure is ok replace the switch they are very cheap about 20 bucks. Please rate.

Posted on Aug 12, 2009

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SOURCE: Dodge 2.7 I'm losing oil

The first stop is to measure the pressure with an external gauge. if the readings are the same, surgery is needed, I would look at the oil pressure relief valve for foreign particles.

It takes resistance to make pressure, and your decsription does not sound good. If the pressure is actually dropping, and you find no issues with the oil pump and pick up, you need to measure bearing clearances... Essentially, everywhere oil is pumped needs to be inspected...

Posted on Oct 31, 2010

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Hi i have a 1991 rs camaro 3.1 my question is when i crank the car up and its cold i have 80 pounds of oil pressure but as it warms up it drops when at operating temp it drops to zero but doesn't knock and...


I doubt it's the pump. The only reason I have ever replaced pumps are on engine rebuilds or someone wanted a high pressure pump. Since you have good pressure, then no pressure until the RPM's are up. I would say the crank bearings are a bit worn. Going to zero pressure means something is not getting enough oil. Just a note... If there is a lot of sludge, some port could be clogged. But this also leads to a total engine rebuild, not just the crank and bearings.

Jan 15, 2015 | 1991 Chevrolet Camaro

3 Answers

What causes oil pressure to drop to zero but goes with accelleration


If your oil is full, it's most likely electrical. If it's not electrical, then it's most likely something like a crack in the pickup tube, sucking air if I had to guess.

Sep 11, 2014 | 2000 Jeep Grand Cherokee

1 Answer

Oil pressure drops to zero on avalanche


If there truly was no oil pressure it would make a horrendous rattle sound from not only the rods but especially the hydraulic valve lifters. It sounds like probably the pressure sensor or the wiring, or both are not reading correctly. The older Chevy V8's had the pressure sensor on the side of the block, under the exhaust manifold where it would just cook it and make it leak and not work right. I always kept a direct reading pressure gauge with hose and adapters in my tool box when I felt I couldn't trust the onboard gauge. Many times it proved the gauges and idiot lights wrong.

Dec 07, 2013 | Cars & Trucks

1 Answer

Problem with 91 Camaro RS


You have spend a lot of money on parts, have you invested in a Compression Tester or I believe you have Blown your Head Gasket, Cracked your Head. You are now getting Blow By and it is going into your System.

YOUR problem with your Raw Fuel getting into your Exhaust is due to the LAck of compression to Ignite the fuel.

It could also be a Bent or Swallowed Valve.

A Cylinder Leak Down Test will help you resolve this issue.

Good Luck

Apr 16, 2013 | Cars & Trucks

1 Answer

My check gauges light is on, oil hands goes over to zero, moves up, light goes off, when it drops back to zero, gauge light comes back on.


Well the warning light is supposed to come on if any of the gauges display a dangerous condition, such as no oil pressure.
You may have a faulty sending unit for the gauge, or a wiring problem, or the engine may actually be loosing oil pressure when the gauge drops.
You could replace the sending unit as a test, or have someone check the oil pressure with a mechanical gauge.

Dec 13, 2012 | 2001 Jeep Grand Cherokee

1 Answer

If pickup tube on the oil pan is bad will my oil pressure drop to zero at stops and at acceleration go back up


IT IS POSSIBLE ,BUT YOU SHOULD USE A MECHANICAL OIL PRESSURE GAUGE TOO COMFORM IT IS NOT A BAD OIL PRESSURE SENDER OR GAUGE

Jul 03, 2012 | 1995 Pontiac Bonneville

1 Answer

1991 jetta 1.8 manual. Oil pressure gauge works but as the car heats up after about 5 minutes the gauge drops to zero (no oil pressure), oil is pumping up to the cylinder head, drove the car for about...


you may have a faulty oil pressure sensor which needs replacing or a loose connection, check for any loose wires......hope this helps.....cheers.

Jun 20, 2011 | 1991 Volkswagen Jetta

1 Answer

Trying to find out if the head gasket is blown, how will i know


Is there any water in the oil or oil in the water ? there is a tool also you can use that hooks on the radiator cap that you pressure up on while car is not running to see if your loosing pressure in the system. you pump it up and watch the gauge to see if it drops in pressure .. if so it is leaking somewhere .. holler if you need more Jerry

May 16, 2009 | 1993 Chevrolet Camaro

3 Answers

Starts but wont stay running


In reply: if its not the maf there are 2 relays in the relay box i belive its underhood, 1 primes the fuelline to 32psi the second kicks in after it starts, and keeps it running and varies the psi. if the primer relay isnt kicking in then it wont start due to no fuel

THX

Don :)

Jul 26, 2008 | 1991 Chevrolet Camaro

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