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FixItMan, Master Technician
Category: Car
Satisfied Customers: 17085
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2002 pontiac grand am: cyl engine runs..module,coils,plugs

Customer Question

2002 pontiac grand am 2.2 4 cyl engine runs routh got trouble code po300 multiple misfires.replaced ign. module,coils,plugs without any improvement
Submitted: 8 years ago.
Category: Car
Expert:  FixItMan replied 8 years ago.
HelloCustomer how many miles are on the vehicle? Does it run better when you are at highway speeds?
Customer: replied 8 years ago.
car runs better at highway speeds.
Expert:  FixItMan replied 8 years ago.

How many miles are on the vehicle?

Customer: replied 8 years ago.
Expert:  FixItMan replied 8 years ago.
Okay, you need to start by checking the fuel pressure. Your pressure may not be adequate to run the system. You should also change the fuel filter if it has not been changed recently. If all of that is okay then you need to perform a compression check to see how the internal parts of the engine are.
Customer: replied 8 years ago.
solved problem.spring in tensioner for counter
balancers failed,lost timing on balancers only.
replaced complete balancer kit,also complete
valve timing kit.engine runs good.
Expert:  FixItMan replied 8 years ago.
Great job with the diagnosis. That is a strange thing to happen to that enigne. Let me know if you need anything else.

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