complete engine problem

2000 PONTIAC GRAND AM
184,000 MILES • 6 CYL • FWD • AUTOMATIC
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SHHENRY2000
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  • 1 POST
i have a 2000 grand am 3400 v6 auto. car idled high and would skip now and again. blew out cat converter, wasnt it. had intake manifold gasket replace, got it back acted up even worse and had to get the head gaskets replaced a few weeks later. after finally getting it back, it still skiped but now when i step on it, it sounds like a machine gun as i would explain the noise. fuel regulator diaphram was leaking, replaced it along with the alternator. now it will make that noise all the time and i know that its not a good thing. things ive done to the car are, subwoofers a racing exhaust, and i also put a ram air kit on it. could it have anything to do with that or is my problem even deeper than i think. ive been told no back pressure would screw with it, and also that my anti theft could be shutting down my fuel regulator. im getting sick of puttin money into the car on things that dont help. what usefull advise would u have to give, im outa ideas
Dec 20, 2010 at 1:37 PM
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ERNEST CLARK
  • CAR REPAIR CONTRIBUTOR
  • 1,730 POSTS
First are you getting a check engine light? To be absolutely sure, you can have the car drive-tested by a technician using a scanner capable of reading the live sensor data. This'll cost you a pretty penny.

If you're capable of doing your own work, you can start with the ignitions system, look for vacuum leaks, check fuel pressure.
Dec 29, 2010 at 3:24 PM
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LEGITIMATE007
  • CAR REPAIR CONTRIBUTOR
  • 5,121 POSTS
yeah I think it may have something to do with vacuum, and plugging or rerouting some lines to accomodate some of the mods you did. one could of came off in the process. look really good and trace your vacuum hoses.
Feb 17, 2011 at 2:59 PM
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