7.3 Motor Surge - Ford Powerstroke Diesel Forum
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Old 02-09-2011, 11:15 AM
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Thumbs up 7.3 Motor Surge

Cant find any of my old post or threads on this, so starting a new one, and telling you my fix.
My motor was having extreme surge problems at low RPM,s under no load, when loaded I didnt really notice it that much, could be because I had more pedel pushed down not sure, but was reading some other threads on this issue and found one and tried another fix.
Just to let you know this problem went away when cruise control was on.

The fix...........I unplugged both connecters at my pedal and cleaned all of the connections, I used WD-40 but a contact cleaner or something i think would work as well. then I plugged and unplugged the connectors a few times to make sure the pins where making contact and any tarnish that might have been on there was rubbed away.
I reconnected them with some electrical grease and went for a drive, the problem was gone, this was about 6 months ago, and the problem has not returned.
Just so you know this was my idea or fix, someone else had posted it, and I thank them for that, I just hope that helps some of you out there that has had the same problem.
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Old 02-09-2011, 11:33 AM
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Thanks for posting this!
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Old 02-09-2011, 01:10 PM
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I forgot to mention, (I work and think better than I type) I also sprayed a heavey dose of WD-40 into and around the IVS (Idle Validation Switch) and even toggled it a few times with my finger while spraying, and I also sprayed the heck out of the TPS (Throttle Pedal Sensor) both of these are located on the throttle pedal.
My thinking that with all of the moisture, dirt and dust in this area, it plays heck with the switches and sensor, let alone the connnectors. I hope this helps alot of people with this problem. At least if you try and and it doesnt fix your problem, you can cross that off of the list.
Hope this extra helps even more, for those of you who do not know WD-40 was originally developed as a water displacement product. According to the record. it got its name because it was on the 40th try that the product worked. Just alittle trivia..

woody
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bucking, missing, stalling, surging

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