Update on surging, bucking jerking. help please - Ford Powerstroke Diesel Forum
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post #1 of 18 Old 11-23-2010, 12:48 PM Thread Starter
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Update on surging, bucking jerking. help please

Well my mechanic pulled a bunch of codes and told me it was my chip messing up my pcm, well we buy a brand new pcm, yeah cost me a pretty penny, truck still drives the same, shutters and bucks while cruising and now even just dies going down the road. rolling threw a parking lot the motor just sounds crazy like its got a hot rod cam in it. ill post some codes he left on a receipt in my truck. im getting tired of not being able to drive me truck, its been over a month now. Any one had any similar experiences?


P0123 Accelerator Pedal Sensor Circuit High Input

P0232 Fuel Pump Relay Driver Failed Off

P1209 Injection Control System Pressure Peak Fault

P1282 Excessive ICP

P0340 CMP Sensor Circuit Malfunction

P1210 Injection Control Pressure Above Expected Level

P1211 ICP Not Controllable - Pressure Abow/Below Desired

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post #2 of 18 Old 11-23-2010, 01:35 PM
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Is the chip hooked up now? Did you drive it without the chip plugged in? What cam sensor do you have in it? It might be a good idea to see if you can find someone with AE and scan and test your truck. It sounds like a cam sensor to me.

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post #3 of 18 Old 11-23-2010, 01:52 PM Thread Starter
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Thanks for the reply. It ran like garbage and he told me to take the chip off so I did. It ran a little better for a day now worse. Those codes were without chip. I have no clue what cps is in the truck. And he put one in about a year ago I think. Also what is an AE scanner?

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post #4 of 18 Old 11-23-2010, 04:36 PM Thread Starter
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I have been searching non stop to find the problem on the forum, my mechanic is out all week for holidays so its up to me, booo haha i read that it could possibly be the injector harness?? is that under the valve covers? maybe the idm? we changed the pcm.

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post #5 of 18 Old 11-23-2010, 06:11 PM
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change the ICP now and PM me after you do it.

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post #6 of 18 Old 11-23-2010, 06:15 PM Thread Starter
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I'm gonna call my buddy at the salvage yard in the morning. They are same for all 7.3 correct? Have you had a problem like this before?

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post #7 of 18 Old 11-23-2010, 06:47 PM
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unplug your icp sensor and see if it runs better..
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post #8 of 18 Old 11-23-2010, 06:53 PM Thread Starter
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I pulled the wires and it ran without giving me whiplash but did have a ses light as soon as i turned the key on. the truck didnt have much power but im assuming because the plug was pulled. Guess my next step is too plug it up and see if it bucks again in the morning then start looking for a sensor. ebay has some new ones for 75 shipped. wish i could find one local for that price.


Last edited by smokeyd; 11-23-2010 at 08:42 PM.
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post #9 of 18 Old 11-24-2010, 04:59 PM Thread Starter
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UPDATE I had my mechanic put a dif icp in from another motor and the truck instantly started the bucking and serging again. I unhooked the icp and went home pissed off and the truck started doing a little bucking with the icp unplugged, What gives guys!

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post #10 of 18 Old 11-24-2010, 05:36 PM
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Could this maybe be an ipr issue guys.??

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