Question about 1998 Pontiac Grand Am

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1998 pontiac grand am my daughters car. It quit her tonight said it was making a funny noise which doesn't help alot. I ran the obd scanner on it and it gave me two codes po420 and po440 and when I try to start it all the lights go out and cranks very hard. The battery is fully charged and I don't understand the problem. thanks for your time and help with this.

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Did she go through a puddle?? check the alternator and the belts

Posted on Sep 09, 2009

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P0420 Catalyst System Efficiency Below Threshold (Bank 1)

P0440 Evaporative Emission Control System Malfunction
ths codes wont affect the starting of the car,it does sound like the timing is off,this car has thequad engine and the timing chain has been know to jump,but check the ignition module.

Posted on Sep 09, 2009

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