engine lacks power [Archive] - GrandAmGT.com Forum


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10-15-2006, 12:47 PM
car will not go more then 30 miles and hour, car stumbles. have replaced TPS and fuel pressure regulator now whut?

10-15-2006, 01:00 PM
I bet it was the TPS, that happened to my car when the car can not sense where the throttle is so it doesnt know when to shift, how much fuel to inject and stuff like that, try unpluging it and pluging it back in.

10-15-2006, 02:53 PM
check your spark plugs. My car was running on 3 cylinders for a while.

10-15-2006, 03:02 PM
This happened to a friends car, he got it scoped out and they said it was the mass ait flow sensor so he replaced it. Has way more power than it did before and runs fine now. So maybe trying replacing that sensor.

10-15-2006, 03:53 PM
also check catalytic convertor could be plugged

10-15-2006, 06:04 PM
also check catalytic convertor could be plugged


10-24-2006, 12:35 AM
OMG, when i had my cat clogged..I lost sooo much power...would never shift right, and slow as balls..never got over 35...Straight piped it for now..and It runs like a champ...I was losing to Ford Taurus's..lol..Clogged cat, for sure.