my pontiac grand prix is losing power and sucking in extra air where is it coming from

Asked by Feb 02, 2014 at 06:01 PM about the 2001 Pontiac Grand Prix GT

Question type: Maintenance & Repair

it has no pulling power to get up to speed and the when it shifts up a gear the RPMS start to jump down and up during that it sucks in air

5 Answers


The 3.8 liter V6s are notorious for intake manifold gasket failure. Is your "service engine soon" light on? If so, have the computer scanned and post the trouble code(s). Advance and Autozone auto parts stores will do it for free. Also, check your vacuum hoses for cracks and other damage. Pull the oil dipstick too. If it's got white milky "goop" on it the intake gasket most likely has failed. If this is the case you'll want to have both the upper and lower intake manifold gaskets replaced. Then have the oil changed twice as part of the repair. If the oil is contaminated with coolant the oil changes are a must to avoid a spun bearing. HTH. -Jim

service engine soon light is on but when autozone checked it they couldn't fiind anything wrong


Make sure your crankcase vent tube is plugged into the intake hose. If it comes unplugged, it sucks in too much air and runs lean.

1 of 1 people found this helpful.

now my car wont even start what is going on with my car???


It's possible that it's an electrical issue and some of the wires got damaged or shorted out, which could cause the battery to die. Open the hood and look around at the wires in the engine bay to see if any of them are chewed up or exposed.

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