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Where to find oil pump 83 MB

Oil gauge goes to 0 at idle why?

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Posted on Jan 02, 2017

  • 14 Answers

SOURCE: oil gauge jump between 0 and 40

you either have a faulty gauge or your oil pump is going bad or you have a clog int the oil system somewhere , how many miles on the truck..,, try flushing the oil system your main bearings could be gettin weak also but start with the easy things first,.,.

Posted on Jan 13, 2009

  • 13 Answers

SOURCE: 1999 Chevy Blazer - idle fluctuates

oil pump might be going bad

Posted on Aug 03, 2009

  • 1201 Answers

SOURCE: Oil pressure gauge on 2004 Silverado HD 2500

No it's not normal. If you haven't done so lately, change the oil and filter, if that doesn't cure the problem, either the oil sending unit is bad, or the oil pump is on it's way out.

Posted on Aug 27, 2009

  • 318 Answers

SOURCE: oil pressure gauge goes to 0 when idled, but goes

You could try thicker oil or stop using synthetic or add some lucas oil treatment or change the oil. The sender could be bad too. A diag is in order because if there is no presure the engine will soon die.

Posted on Dec 09, 2009

  • 3600 Answers

SOURCE: oil pressure gauge at 0

It is a possibility but I would check for sure. The oil gauge on that unit is electric not mechanical, you need to remove the sender or find a oil hole port on the side of the block and test the oil pressure to be sure it has oil pressure, if it is then it could be the sender or the wires going to the computer control. 2005 may be under warranty, however do not drive it till you know for sure. I don't remember if they still had the kill switch on that year or not, if the switch was reading zero the engine would not start so it could be something simple like a corded wire or as you said the sending unit. Hope this helps and if you need more help write back or do a chat or e-mail to get more help. You can look up the part at www.advanceauto.com and see what it looks like and get the price list for the thing and look to see if it has one two or three wires before you ever open the hood. if it's a three wire it has a kill switch if it's two it's not. if it's one it gets the signal from the computer and your problem may be the computer. However I don't know if it is still under warranty or not and weather you want to fix it or not. Let me know if you need more help. If you need the procedure for removal please respond to this post. Thanks for using fix-ya. I hope this helped.

Posted on Dec 28, 2009

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Well it could be the sending unit for the gauge.
But odds are the oil pump or engine bearings are worn out.
As the engine warms up, the metal spaces expand and the oil gets thinner. The oil pressure drops some under normal conditions, but not more than 10 or 15psi. Normal idle pressure with the engine warmed up is probably 25psi.
You could check oil pressure with a mechanical gauge to make sure its not the sending unit.
Once the oil pressure starts staying below 20psi for long periods you'll start hearing noises.

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First we would need to know when this occurs. Asuming the oil level is at the full mark!. If the pressure goes up during acceleration and down at idle when engine is fully warmed up, then this is normal. An engine requires 10 psi of oil pressure per 1,000 rpm ( ex. 20 psi at 2,000 rpm, 25 psi at 2,500 rpm, and so on ) . If the gauge is moving back and forth erratically at idle , i would say the gauge is bad. If it drops to 0 while accelerating I would say your oil pump is bad. If from time to time it seems to work and other times it seems not to work, I would say the oil pressure sending unit for the gauge is bad. If the pump failed you would start to here a Knocking noise from the engine in a short period of time. Use the above scenario's to narrow down what it may be.

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First we would need to know when this occurs. Asuming the oil level is at the full mark!. If the pressure goes up during acceleration and down at idle when engine is fully warmed up, then this is normal. An engine requires 10 psi of oil pressure per 1,000 rpm ( ex. 20 psi at 2,000 rpm, 25 psi at 2,500 rpm, and so on ) . If the gauge is moving back and forth erratically at idle , i would say the gauge is bad. If it drops to 0 while accelerating I would say your oil pump is bad. If from time to time it seems to work and other times it seems not to work, I would say the oil pressure sending unit for the gauge is bad. If the pump failed you would start to here a Knocking noise from the engine in a short period of time. Use the above scenario's to narrow down what it may be.

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Oil pressure gauge goes to 0 when idled, but goes


You could try thicker oil or stop using synthetic or add some lucas oil treatment or change the oil. The sender could be bad too. A diag is in order because if there is no presure the engine will soon die.

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