7.3 E350 drops to idle, resumes after 1-3 min. - Ford Powerstroke Diesel Forum
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Old 01-12-2013, 03:12 PM
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7.3 E350 drops to idle, resumes after 1-3 min.

Here's something different, maybe it has been addressed and I can't find it.

I have a `01 E350 with the 7.3. A few years ago we had the cam position sensor fail. Once it was replaced with the (then) newer version there have been no problems until Sept of `12.

What is now happening is a little different. Whether I am towing or running solo, highway or street, this has happened. When you are driving along or even accelerating lightly, the engine goes to idle. It doesn't run rough and it doesn't flat out quit, it just goes to idle. Moving the throttle has no effect, whether you lift, press or pump. Then, out of the blue, it acts as if nothing has happened and all returns to normal!

I took it to the dealer in Monrovia CA and it did do it for them but they can't find an error code nor find anything amiss mechanically.

Any suggestions?
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Old 01-12-2013, 04:27 PM
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could be the app sensor. dealer should monitor the app PID and try to induce the symptom
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Old 01-15-2013, 08:50 AM
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did you find out what the problem was? i,m havin the same problem on my 99 7.3 powerstroke.
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Old 01-15-2013, 08:51 AM
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Kaya,

Thanks for the tip but that was one of the first things looked at. It never hurts to state the obvious, Lord knows how many times I've gone marching right past it myself.

The fault did happen for the mechanic when he test drove it but only as a quick drop off and resume, kinda like a stumble. When he tried hooking it up to find a code, there wasn't one.

The last thing I need is to be coming home on the Grapevine and have this happen with traffic. So far it has happened in places I could get out of the way.

So, if anybody else has any suggestions, I am all ear!

TIA, Ken
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Old 01-17-2013, 04:32 PM
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Has the TPS been checked yet?
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Old 01-18-2013, 06:57 PM
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I'm having this exact same issue and I have no idea what's wrong. I replaced my accelerator pedal sensor, but I still have the issue.

My truck does the stumbles a lot anywhere up to about half throttle. Any more throttle than that, and it's fine. Sometimes the truck only stumbles a little, and sometimes it just drops down to idle for awhile and I can't get rid of it no matter what I do with the pedal.

Any insight would be great?!?!?!
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