Extremely slow throttle response

Extremely slow throttle response

11-05-2009, 01:28 AM

#1 (permalink)

JHayes

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Join Date: Dec 2001 Posts: 3

Extremely slow throttle response

I`m trying to help a friend with his step-son`s truck. It`s a 2002 2500 6 speed . Extremely slow throttle response when accelerating and decelerating. It sets p0122 and p0236 codes. p0122 will not erase.p0236 will erase 'and then come back when truck is cranked. Installed new map sensor. We`ve tried three pedal position sensors(two were new NAPA parts. Voltages are correct on map and APP sensors. APP has been reset a number of times. When accelerator is depressed quickly, no response until almost fully depressed. Very slow depression , acceleration is much better. After engine comes up to speed, RPMS don`t start to drop until accelerator is almost fully released. Does anyone have any suggestions?

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