Question about 1999 Pontiac Firebird

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Knocking noise and oil pressure went from 90 to 0

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  • Master
  • 474 Answers

Sounds like you spun some bearings

Posted on Oct 02, 2009

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Posted on Jan 02, 2017

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bunnydawg
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SOURCE: knocking noise in the engine.

have you check the level of the oil... if it is down you are either dumping it on the ground (major oil leak) or it's burning oil quickly... i suspect if you ran it without oil the damage is done... either buy some stp oil conditioner (thickens the oil) or start using 50 weight oil.... all that will do is keep it quiet mostly.

one thing tho... don't try these solutions if you live in a cold weather climate... the oil will get so thick because of the cold you will have trouble turning it over.

Robert

Posted on Dec 17, 2008

  • 409 Answers

SOURCE: No oil pressure and a knocking that got

Sounds like the oil pump intermediate shaft might have slipped out of place when the distributor was removed and replaced. The intermediate shaft is held to the oil pump by a nylon sleeve that can and sometimes does break, which will allow it to slip out of place. Pull the distributor back out and look down the hole with a flashlight, you should see the top of the shaft, it looks like the head of a regular flat tip screw, if you do not see this the shaft is out of place and the only fix is to remove the oil pan and reinstall it. As far as engine damage, if you only ran the engine for a short time and at low rpms you might be alright, if you drove it down the road or ran it at high rpms then there is probably damage to the bearings, and the knock will not go away.

Posted on Apr 09, 2010

  • 2002 Answers

SOURCE: no oil pressure and a

First thing is to NOT attempt to run or drive it. Knocking is a sure sign that serious engine damage is starting to occur. Either your oil pump has failed or your engine is worn out. Take the car to a shop and have the engine checked out. A mechanical oil pressure gauge will give an accurate reading of how much oil pressure is actually there. A compression test will let you know the condition of the rest of the engine.
I would take it to an engine rebuilding shop for an assessment, just check to see if they have some experience on imports. They would be the most knowledgeable on what to do from here. You may be able to simply install a new oil pump and be good to go, or you may have to look at rebuilding or replacing the engine, but a few bucks right now at a professional shop could save a lot of time and money being wasted.
Hope this helps.

Posted on Mar 12, 2011

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