Anyone know what could be causing my surge problem? I have a 2000 Grand Prix SE. Have replaced the battery, the gas cap, transmission flushed and filled, fuel injection cleaned, fuel filter, and the Throttle Positioning Sensor and the surge came back. It varies from 2000-2500 RPM when it does it so you can imagine that it definitely can be felt. It mostly occurs in a slow acceleration. Goes away when I kick it down into overdrive passing someone. Help

could it be misfiring??

i agree with the previous statement, it could be a misfire of some sort

the plugs are only like 40,000 old... same as the plug wires.... you guys think that maybe a bad plug or wire.... maybe worse.... a coil?

my s-10 did that and it was a vaccum leak, i dont kno very much about Grand Prix's but that might be it

My 1999 GP GT is doing the exact same thing. Have you fixed your problem yet? If so, any info would be appreciated.

Thanks,
Greg


Anyone know what could be causing my surge problem? I have a 2000 Grand Prix SE. Have replaced the battery, the gas cap, transmission flushed and filled, fuel injection cleaned, fuel filter, and the Throttle Positioning Sensor and the surge came back. It varies from 2000-2500 RPM when it does it so you can imagine that it definitely can be felt. It mostly occurs in a slow acceleration. Goes away when I kick it down into overdrive passing someone. Help

Hmm.. I am also experiencing this. I was going to throw a TPS at it, but hearing as how it didn't fix your problem, I'll hold off for a bit. I've got brand new Delco plugs and wires, fuel filter, and one coil. Are you noticing it get progressively worse? Mine is at the point to where I'm very hesitant to drive it.