Question about 2002 Pontiac Grand Prix
Sounds like you may have a plugged catalytic converter. The easiest thing you can do yourself is unbolt the exhaust from the rear manifold. Test drive it with the exhaust unbolted. If the power is restored replace the cat.
You can also try unplugging the MAF sensor and see if it drives any better.
Reading the codes that have triggered the check engine light would be a good place to start as well. Knowing what codes are present will help steer you in the right direction a little faster.
Posted on Nov 11, 2010
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Posted on Jan 02, 2017
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