Question about 1999 Pontiac Grand Prix
Check engine light on. When you put your foot in to it it sputters and hesitates when supercharger starts to boost
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Posted on Jan 02, 2017
There is no wastegate.
Change the spark plugs and pay special attention to the plug on bank 3. Look for physical damage on the electrode...cracked, bent etc.
Use Autolite 605's copper core gapped to .055" and NEVER run less than 92 octane.
Posted on Apr 29, 2010
SOURCE: When I push on throttle
replace catalytic converter before you do more damage to your car. a restricked air flow out the exhaust will cut hoarse power and build up heat in your engine and will burn out sensors
Posted on Oct 28, 2010
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