Runs like sh*t when cold.... - Ford Powerstroke Diesel Forum
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post #1 of 9 Old 02-16-2009, 01:09 PM Thread Starter
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Runs like sh*t when cold....

So today it happened for the 3rd time. Started the truck, let it run for about 10 minutes to warm up, then took off. Then im not sure how to describe it, i guess best way is it stumbles, seems like its not running on all cylinders, kinda shakes a litte, and the SES light comes on. Stays like that for about 5-10 minutes, then all of the sudden it'll run completely normal, SES light goes off, and everything is fine from then on.

Anybody have any clue what this could be? Dont think i should let it keep happening.

2012 F350

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post #2 of 9 Old 02-16-2009, 03:55 PM
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Scan for codes. Sounds like UVC harness connection coming loose to me.

Russ
Late '99 F-350 7.3l 6sp 2wd aftermarket dually kit 255,000mi STOCK
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post #3 of 9 Old 02-16-2009, 04:09 PM
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its the cam sensor this would happen to me in my 97 i went to ford and got one of their cps's put it in and never had a problem since
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post #4 of 9 Old 02-16-2009, 04:12 PM
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Cam Sensor would be my vote also
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post #5 of 9 Old 02-16-2009, 04:20 PM
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those symptoms might also be caused by a bad IDM .............

if you see a light at the end of the tunnel, it's probably just a photon torpedo
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post #6 of 9 Old 02-16-2009, 04:35 PM
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Maybe could be the 5.6K mod? i notice that after running the 10k and tried taking it out my SES light came on and truck ran like A$$, order a new icp sensor should be in tomorrow so i can take the resistor out, truck wont run without it right now. So im out $180 because of it


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post #7 of 9 Old 02-16-2009, 04:40 PM Thread Starter
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i've got my 5.6k mod on a switch and havent actually had it on very much lately so dont think that has anything to do with it.

is it stored as a soft code then? guess i need to go have the code read but just dont feel like paying to have it done again.

2012 F350

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post #8 of 9 Old 02-19-2009, 08:23 AM
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Quote:
Originally Posted by Deeslfxr View Post
Scan for codes. Sounds like UVC harness connection coming loose to me.
Hey Kyle this is exactly what I was telling you about the other day. Its not much work at all to pull the valve covers off and take a look. This is kind of a bigger problem on the 7.3s, Ford actually came out with a wedge to put under the clip to keep it from falling out. If you had a heat lazer, you could find which cylinders are not working, so you only had to take off one cover.



On vacation from a truck for a year or...
Looking at 6.4s Moving in a few months then hopefully buying my dream truck!!!

Driving an Audi till then...
but at work I drive
16 E-450s 7.3 powerstroke Ambulances
7 Duramaxes
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NO CUMMINS.....
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post #9 of 9 Old 02-19-2009, 08:26 AM
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Quote:
Originally Posted by Deeslfxr View Post
Scan for codes. Sounds like UVC harness connection coming loose to me.
this would be your problem

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