oil pressure question....help please
Thread Starter
Staging Lane
Joined: Jan 2011
Posts: 60
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oil pressure question....help please i tried posting this in the firebird section, but received no responses, i have extensively looked on the forum for an answer to this question but i have found none. if its a re-post you have my apologies.
Now onto the question. I have a 1998 5.7 t/a. on cold run my oil pressure is around 55-60 on the gauge once warm it runs between 40-50, on warm idle it drops down to about 28-30 and bounces, and i can feel the car bouncing. i dont have any performance issues, no misfire or codes or anything. im just curious if these are normal psi's to be seeing.
Now onto the question. I have a 1998 5.7 t/a. on cold run my oil pressure is around 55-60 on the gauge once warm it runs between 40-50, on warm idle it drops down to about 28-30 and bounces, and i can feel the car bouncing. i dont have any performance issues, no misfire or codes or anything. im just curious if these are normal psi's to be seeing.
The car bounces? Is it like a choppy idle bounce? My car runs about that oil pressure. Ive driven it 10,000 miles with it like that and it hasnt missed a beat. You might try replacing the oil pressure sending unit. I just dont think that is the problem if you say the car bounces though. Elaborate on the bounce please.
Thread Starter
Staging Lane
Joined: Jan 2011
Posts: 60
Likes: 0
I can see the oil pressure bounce at 28-30 and i can feel it as i watch the gauge bounce, not like a misfire or rough idle but i can definitely tell the difference from an in park idle to and in drive warm idle. My last car was a 300zx TT so it might just be me adjusting to a v8 idle, i just wanted to make sure the oild pressure was normal because ive read that the ls1 oil pumps can go bad quite quickly
Check your grounds starting with the negative battery connection and strap and including the grounds that attach to the back of the cylinder heads. Star washers are your friend.
