motor stall

[dragonsfear]

When I accelerate the pedal fast, or even rev the motor from idle quickly, the motor wants to die out like a choke was sticking. Another thing is it won't do this when motor is cold. As soon as you get past this dead spot, its fine. Its fine idling, its fine at higher rpms. This hasn't happened overnight, it has slowly gotten worse. I have read alot of the messege boards, and similar problems suggestions were the egr valve, fuel filter etc.. but no one had the cold runs fine, up to temp has a dead spot . Any suggestions please ?

[SeanMurphy]

maybe it's something as simple as an air flow problem or a vacuum leak. I had a jet ski that acted just like this, but it was a collapsed exhaust pipe. maybe your O2 sensor is fouled and it's muddling up your air/fuel ratio. Does the exhaust gas ever look black or anything? What year is it? If it's 97 or up, you can get a relatively inexpensive OBD2 reader that interfaces with a laptop and lets you see all realtime sensor data. I got mine from http://www.scantool.net (ISO version), but there's also the autoenginuity scantool that works for all 3 OBD2 protocols (ISO, PMW, VPW)

[dragonsfear]

Its a 94' and there is no color from the exhaust. The throdle body is sucking air I had air filter cover off and reved it from under the hood and I see gas going in, I hear air being sucked in but acts like its not getting air. As if you where spraying carb cleaner in it.

[Crvett69]

if you have a ohm meter i would check the throttle position sensor. sounds like it might have a bad spot in it

[dragonsfear]

Thank you guys...it was the TPS.