Extremely touchy accelerator pedal!!!???
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Joined: Mar 2008
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From: Dongola, IL
Extremely touchy accelerator pedal!!!???
Well, I sold my truck, and am now driving the one I got in Dallas.
It has a really touchy pedal from idle to about 1200 rpm. I changed the pedal out for another one I had, no difference. I am thinking that the IPR might need a cleaning, is that a possibility? Any other ideas?
Thanks!
It has a really touchy pedal from idle to about 1200 rpm. I changed the pedal out for another one I had, no difference. I am thinking that the IPR might need a cleaning, is that a possibility? Any other ideas?
Thanks!
Hotshot
Joined: Aug 2006
Posts: 10,764
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From the Diesel mans page :
If the IVS switches on at too high of a TPS voltage, it can cause the truck to buck at low speeds as the IVS cycles on and off as the driver tries to control his speed. The only way to correct this is to first loosen and turn the TPS sensor to reach the lowest possible voltage reading on the scan tool and retighten. Then bend the IVS stop to adjust the on/off point to 0.2-0.3 volts above the base AP voltage reading. Note: There have been cases of lack of throttle response and the above codes which were caused by the PCM not recognizing the IVS "on" signal. Replacing the PCM corrected the problem.
If the IVS switches on at too high of a TPS voltage, it can cause the truck to buck at low speeds as the IVS cycles on and off as the driver tries to control his speed. The only way to correct this is to first loosen and turn the TPS sensor to reach the lowest possible voltage reading on the scan tool and retighten. Then bend the IVS stop to adjust the on/off point to 0.2-0.3 volts above the base AP voltage reading. Note: There have been cases of lack of throttle response and the above codes which were caused by the PCM not recognizing the IVS "on" signal. Replacing the PCM corrected the problem.
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Posting Guru
Joined: Mar 2008
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From: Dongola, IL
Thanks for the replies,
The truck is not chipped. Unless there was a programmer on it before that I do not know about.
Since I changed the whole pedal out (IVS,TPS and all) it can't be that right?
Is it possible that a faulty/dirty IPR could cause this?
Is there a way to find out if there is a programmer on it without having it reflashed?
Sorry for all the questions,
Thank you!
The truck is not chipped. Unless there was a programmer on it before that I do not know about.
Since I changed the whole pedal out (IVS,TPS and all) it can't be that right?
Is it possible that a faulty/dirty IPR could cause this?
Is there a way to find out if there is a programmer on it without having it reflashed?
Sorry for all the questions,
Thank you!
Hotshot
Joined: Jul 2008
Posts: 11,231
Likes: 130
From: Thomasville, GA
If it was programmed you have to have it reflashed.
Sorry, don't know much about this problem...
Sorry, don't know much about this problem...
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