Question about Pontiac Grand Prix

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Havwe 1995 Grand Prix GTP 3.4 motor.Timing belt broke,was replaced along with valve job.Mechanic said he fixed the car except the car now sounds loud (like a diesel truck)and a tapping sound like it needs oil.On test drive had lost power at take off and odd smell.Took back to mechanic and he said he could fix the noise problem.What is wrong,i don't know what to tell the mechanic except that it didn't sound or run like this before repairs were made.Help please.

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  • jgptg Jun 04, 2010

    Yes helpful,but wanted to add to my comments

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Sounds like u have lost engine oil pressure and the oil pump is not working, let the tech do his job, he has hands on and i am just guessing here, a guess i might add based on 35 years of automotive repair in GM dealers and others. As far as the smell goes that is most likely just the smell of oil and other stuff burning off the exhaust and engine, there is a slight possibility the timing belt was not installed correctly or it is rubbing on something, that has happened. Did this guy test drive this car before he gave it back to u?

Posted on Jun 04, 2010

  • jgptg Jun 04, 2010

    I forgot to add that he had to replace the computer(said it had rust) i believe it was a used computer, and I don't know if he test drove it.Today before i test drove it he told me it needed a new battery and he istalled his battery and it had difficulty in starting.I have to get him a new battery for tomorrow.I'm no mechanic but i am pretty sure the car will still run and sound the same with a new battery.I am mostly concerned about the sound of the engine and the apparent lost power.The car prior to break down was very quick at take off. I am the original owner,have taken very good care of any needed maintenance and repairs and never experienced any thing like this before.This is not my regular mechanic,he was backed up on work and we needed to get car fixed.

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