truck dies then comes back to life - Ford Powerstroke Diesel Forum
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post #1 of 16 Old 02-28-2010, 08:40 AM Thread Starter
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Exclamation truck dies then comes back to life

Hi, new to this forum.
I have searched but cant find the exact same problem.
truck is a 1999 f350 with 6 speed manual 2 wheel drive and while driving after a shift change press the pedal to accelerate there will be no response, truck seem to die, well go to idle still have steering and brakes but no throttle response the tack still registers the rpm, no warning lights come on, if i let off the pedal for a second and push it back down everything is alright again.
has done this about 5 times in the last 2 weeks.
I have had the CPS replaced one week ago and have checked the ICP and it does have oil in it but the truck does not have a rough idle or any surging and starts very well, oil is full and have changed the fuel filter and air filter.
One other thing it does (may be applicable) when i use the cruise it will kick off by itself, just like the clutch or break were pressed, hit the resume button and it will go on again but kick off whenever it feels like it.
any help at all would be great, I dont have a scanner or access to one right now.

Last edited by sparton; 02-28-2010 at 10:55 AM. Reason: inacurate
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post #2 of 16 Old 02-28-2010, 09:06 PM
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Your apps, or tps, or generally speaking, the sensor above your right foot, is going south on you.

It is easily changed, if you look above the throttle pedal, you'll see it there. now, ford sells only the pedal assembly. There are aftermarket sensors available, sensor only, but take the time to check out Dorman products. They sell complete pedal assemblies, far cheaper than ford.

Good luck
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post #3 of 16 Old 03-01-2010, 02:18 AM Thread Starter
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Thanks for the reply Highwaywrench, I will look into Dorman products.
Do you think that would explain the cruise problem as well?
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post #4 of 16 Old 03-01-2010, 08:47 AM
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if it is glitching out and affecting the IVS portion of the sensor, which is how the ecm determines that the throttle is at idle position, then yes, it could cause a cruise issue.
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post #5 of 16 Old 03-05-2010, 11:19 AM Thread Starter
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well i bought a new tps and the truck is still doing it.
unpluged the ipc and still the same!!

was woundering if the uvh could have anything to do with it?
today when it happens the ses light came on, but as soon as I let off the gas pedal and press it back down the problem goes away and the light goes off, went to auto-zone and had them pull codes but none there.
Any one have anyideas what would cause this?
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post #6 of 16 Old 03-12-2010, 04:12 PM Thread Starter
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follow up,
I replaced the TPS sensor and it still had the same problem, replaced the complete pedal with both sensors and the problem seems to have gone, so it looks like it was the TVS sensor.
Still have the problem with the cruse controll kicking off whenever it want though!
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post #7 of 16 Old 03-12-2010, 04:19 PM
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There is a recall for a speed control deactivation switch (09S09). It may leak fluid and be a fire risk. I don't know if sudden disengagement could a symptom or not. Just putting it out there. Probably could call the dealer to ask.

I have a letter for the recall - Need to get my truck in for it. I'm not having your symptoms.


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post #8 of 16 Old 03-12-2010, 04:31 PM
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Two comments:

1. The scanner at autozone is not sufficient to pull codes out of a SuperDuty. You need a high end scanner like SnapOn or AutoEnginuity with Ford enhancement.

2. The recall for speed control deactivation switch just puts a fusible link in the harness. It takes the tech less than five minutes. On mine, they didn't even pull the truck into the bay - he just came out and crawled under the hood. He was done before I could ask him if I could watch his work.
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post #9 of 16 Old 03-12-2010, 04:36 PM
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^^^^^ agree

Allen
1999.5 F-350 7.3, six-speed
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post #10 of 16 Old 03-12-2010, 08:08 PM Thread Starter
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I had the recall done as well, asked then if that would cause the problem and they thought it wouldn't.
I am looking into getting the AutoEnginuity with Ford enhancement but they dont offer it for a Mac, but that not really a problem. The software looks good from what I have read so far.
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