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Pete, Technician
Category: Car
Satisfied Customers: 29037
Experience:  17 years automotive training and experience.
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95 isuzu pickup 4x4 at running temp the idle stedaly goes up

Customer Question

95 isuzu pickup 4x4 at running temp the idle stedaly goes up at stops sometimes bouncing the rpms from 1000 to1800 and the engine overheats replaced all but radiator ,clutch fan,
Submitted: 4 years ago.
Category: Car
Expert:  Pete replied 4 years ago.
My name is Pete and I am a professional here at Just Answer. I noticed that your question was not getting a response and thought I would see if you still need help with this.

From what you have described here this sounds like a vacuum leak in the engine area itself.If no visible leaks are located the intake may need to be smoke tested to see if a leak can be found.This is usually the best test to have done to locate a leak that cannot be located visibly.A leak will cause a lean engine running condition and a lean condition can cause the engine to over heat like this here as I have seen.

I have seen leaking head gaskets on this model that can cause issues like this as well as warped/damaged cylinder head.This would need to be checked into further to locate and correct this fault here.If the smoke test was not done on this engine I would start with having this done.

Thanks Pete
Expert:  Pete replied 4 years ago.

I am following up with you to see if you still needed help with your question you had asked.If my help didn't satisfy your question please let me know so we can continue.

Thanks Pete