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Transmission shift issue/CEL

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Old Nov 6, 2013 | 01:05 PM
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Transmission shift issue/CEL

New issue just popped up today. My truck is an '03 F250, 7.3, auto, 4x4. As I was driving this morning I felt the engine/transmission stumble as it was shifting gears. It was raining and at first I thought it might just be the tired skipping on the wet streets. Then after a while it did it again as it was shifting gears from a stop.

As I was about to get home the CEL came on and stayed on till I got it parked and shut it down. When I restarted it the CEL was off.

It appears to idle fine. Any thoughts???

I plan to get it to a mechanic to see what codes there are in the morning, but what could possibly make it stumble as it is shifting gears and would throw a CEL?

BTW.....I just replaced the ICP from the dealership, and I also recently had the transmission flushed.

Would the transmission shift solenoid throw the CEL? Just thinking out loud. Of course it could be engine related as well.....
 
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Old Nov 6, 2013 | 02:48 PM
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Update......just got back from a 30 minute drive and not one issue. It shifted fine.....no stumble or misses.
 
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Old Nov 6, 2013 | 03:31 PM
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Yes, a shift solenoid can turn on the CEL. So can about 100 other things. There is a code stored, you need that code to find out what's wrong.
 
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Old Nov 6, 2013 | 03:34 PM
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Originally Posted by Mark Kovalsky
Yes, a shift solenoid can turn on the CEL. So can about 100 other things. There is a code stored, you need that code to find out what's wrong.
Thanks for the reply. I intend to get the codes read in the morning. I just didn't know if there was anything I could visually check in the meantime. Weird that the next drive I took with the truck it ran fine with no issues.
 
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Old Nov 6, 2013 | 04:39 PM
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when you where having issue where you using the windshield wipers and then on the next drive no windshield wipers?
 
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Old Nov 6, 2013 | 04:44 PM
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Originally Posted by clem1226
when you where having issue where you using the windshield wipers and then on the next drive no windshield wipers?
Wiper used on both drives.
 
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Old Nov 6, 2013 | 06:52 PM
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Originally Posted by Tact
Thanks for the reply. I intend to get the codes read in the morning. I just didn't know if there was anything I could visually check in the meantime. Weird that the next drive I took with the truck it ran fine with no issues.
You can visually check everything on the truck. Without the codes it's a waste of time.
 
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Old Nov 6, 2013 | 06:56 PM
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Originally Posted by Mark Kovalsky
You can visually check everything on the truck. Without the codes it's a waste of time.
I agree. I'll report back when I get the code(s). I though something simple, like when my ICP went bad. I had no clue that a tell tell sign was oil in the connector. However, I needed to verify by getting the codes as well.
 
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Old Nov 6, 2013 | 08:22 PM
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What CPS do you have?
 
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Old Nov 6, 2013 | 08:47 PM
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Originally Posted by HKusp
What CPS do you have?
Funny you should ask that, as I've been wondering if this was my problem all day. I changed the CPS a short time ago when the issue was actually my ICP. I changed my original CPS with a Duralast CPS from Autozone. but it wasn't the problem, however it was a cheap try. I kept the OEM CPS as a backup. I wonder if this is my problem? I guess I'll know more when I see my code(s).
 
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Old Nov 6, 2013 | 09:07 PM
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I am leaning that way. Those cheap aftermarket CPS' are known to be susceptible to interference from the wiper motor. Change it back to your original and see what happens.
 
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Old Nov 6, 2013 | 09:11 PM
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Originally Posted by HKusp
I am leaning that way. Those cheap aftermarket CPS' are known to be susceptible to interference from the wiper motor. Change it back to your original and see what happens.
I never heard of this before.....but that doesn't mean anything either. Thanks for the tip.
 
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Old Nov 6, 2013 | 09:26 PM
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You are welcome. Here is a link to a good thread talking about it

https://www.ford-trucks.com/forums/9...werstroke.html
 
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Old Nov 7, 2013 | 07:13 AM
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Originally Posted by HKusp
You are welcome. Here is a link to a good thread talking about it

https://www.ford-trucks.com/forums/9...werstroke.html
.......
 
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Old Nov 7, 2013 | 01:13 PM
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I couldn't get it scanned today.....mechanic was sick. So I decided to put the original CPS back in and use the newer one as a spare. Don't know if this will fix my issue, but it's not raining today. Runs and drive normal today though.
 
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