when i am cruising for instance say 25 mph with steady throttle my rpms will jump for say 2,000 rpm to like 2,100 rpm and keep jumping up and down like wah wah wah, until i either give more gas or let off what do you think the problem may be?

 

sometimes when i get gas it runs better for maybe a day or so then it wont anymore.

 

heck my 4.1 regal had better throttle response lol

 

kills me when i first got the car it had great throttle response what coulda went wrong ....... I got it 5 months ago.

 

Does it do it cruising on the freeway at 60 mph as well? I know a flakey TPS sensor does that. The computer sees the fluctuations in the TPS sensor readings and starts adjusting fuel and such causing a jerky ride. Only way to test TPS sensor is with multimeter and test voltage as you open and close the throttle and look for unusual voltage changes.

 

well the rpm thing can happen whenever, but for some reason i dont think the car is getting enough gasoline.

 

Fuel pump, fuel filter. Those come to mind.

 

when this happened to me it was a burned spark plug wire, I had a stock exhaust on it at the time, so I couldn't hear the miss.

 

well i replaced the cap and rotor, i think it helped it out, now i gotta do the coil. I am also going to do the fuel filter.

 

replaced cts, problem fixed