Diesel Bombers - Surging at all speeds & temps

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some random guy

04-24-2011 08:12 PM

Surging at all speeds & temps

My 2002 F250 7.3 surges at all speeds & Temps. For example, when I get on the road & try to hold a steady speed it speeds up & down. Not big jumps in RPM but enough to make it awkward to drive. When I put the cruise on it smoothes right out? Is there a throttle positioning sensor or something like that, thats acting up? If there is, where is it?

http://img853.imageshack.us/img853/5967/confused.jpg
Thanks for any & all help.

CSIPSD

04-24-2011 08:45 PM

Best bet would be to scan it while driving, I have heard of the accel peddle causing issues like this, but I have never worked on one myself.

reicharm

04-25-2011 07:07 AM

I am having kind of the same issue. my speed doesnt surge it is just the RPM's that jump a few hundred then goes right back to normal. CSI what is the best way to scan it while driving, AE?

some random guy

04-25-2011 01:26 PM

Quote:

Originally Posted by reicharm (Post 744672)

I am having kind of the same issue. my speed doesnt surge it is just the RPM's that jump a few hundred then goes right back to normal. CSI what is the best way to scan it while driving, AE?

My speed jumps up. So when I'm running around town, it's like I'm doing rabbit starts.

gradyc

04-25-2011 10:32 PM

My brothers expedition was doing that and replacing the pedal assembly fixed the problem

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