Chevrolet/1996 Tahoe Oil Pressure
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Question
My wife has a 1996 Chevy Tahoe with a 5.7L V8. The engine has about 90,000 miles on it. I run Castrol 5W30 oil with Purolator premium filter in it. Recently she mentioned that the oil pressure gauge was bouncing around rather than the steady 50-60psi reading it has been showing. The gauge is really sporatic with a starting oil pressure of about 40 psi at cold idle, climbing to about 50 psi when you bring it up to 2000 RPM, but after it warms up it only reads about 30 psi at hot idle. The engine is quiet and smooth with plenty of power, but the oil pressure concerns me. I'm afraid I know the answer but I have to ask. Is it possible that it's the gauge or sending unit, or is it time for a rebuild?
Doug;
Hi I would not worry , if it is running good, I would get the 5w30 oil out and put in some 10w40 with a can of STP. it should bring it up good. it could be the sending unit or the gauge - but as long as you have oil psi. it should be ok. but I would change that oil. ok
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Roger J.M. Warrington
Expertise
I can help you with most standard type things from 1955 chevys up to around 1975 (1975)>> chevys in differnt areas. engine work heads-cams-trannys-drive train-brakes-some elect. dos and donts. PS UP TO 1975 !! !!!!!!!!!!! I will try with any others after that date. state up to 1975 but I still get 2006-007 etc. I guess you do not read this far ! !
Experience
All i can remember growing up is working on cars and making them loud and fast , and when i started to make money i would sink all of it into my cars so i could get them to go faster and look great. what else is there !I would love a challange to trouble shoot, as it is fun finding what is wrong when all others can not .ON the older cars not past 1975s , etc. so please I will try to help with the newer cars but do not grade me bad if I can not help your 2006 car.etc.
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