Stuttering engine

[ricer08]

My problem is that my 94 altima gxe has about 179k on it and once i get to about 2500RPM my car will stutter really bad, like it is about to stall or something.(This only happens when im not stepping on the gas very hard) if i accel hard there is no problem. i already replaced the distributor, plug, wires, injectors, and i was thinking that my cat may be plugged but no-one else thinks that that is it. any advice or tip on what to fix or check out would be awesome

[JustSayGo]

Plugged exhaust bogs down when you push the accelerator and will feel like the power increases when you ease your foot up from the accelerator. Check the TPS. The TPS will probably show a high resistance dead spot when the throttle is at the point that the engine stutters if it were running.

[ricer08]

Originally Posted by JustSayGo

Plugged exhaust bogs down when you push the accelerator and will feel like the power increases when you ease your foot up from the accelerator. Check the TPS. The TPS will probably show a high resistance dead spot when the throttle is at the point that the engine stutters if it were running.

Thanks a ton, im gunna try that out and hopefully your right. Where is the TPS at in my car anyways?