Acceleration Problems when cold
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Acceleration Problems when cold
Have a 2000 Ford 250 Heavy Duty with 7.3 diesel. Experiencing acceleration problems when truck started for first time of the day when temps are cold. Can floor the pedal and it will not accelerate past 40 mph or rev very much. After about two minutes of driving at 40 mph, the motor suddenly kicks in and is fine. It usually doesn't do it after the first time started for the day. Anybody experienced this and found a solution? Also, the abs light is on all the time. Have been told the sensor may be dirty. Any ideas on that as well?
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Joined: Feb 2002
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From: Bonney Lake, WA
I don't know why your ABS light would be on all the time, but I'm pretty sure it's unrelated to the acceleration problem you mentioned. What you're experiencing is the operation of the Exhaust Back Pressure Valve, or EBPV. It's a butterfly valve in the housing just downstream from your turbo. It will close when the ambient temp is below a preset level, to increase backpressure and allow the engine to warm up more quickly.
It can be made inoperable by disconnecting the two wire harness at the base of the turbo, in front. Unless it's bitterly cold where you are, (below zero), you probably won't see a difference in the amount of time it takes for the engine to warm up.
It can be made inoperable by disconnecting the two wire harness at the base of the turbo, in front. Unless it's bitterly cold where you are, (below zero), you probably won't see a difference in the amount of time it takes for the engine to warm up.
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I am sure the abs light doesn't have anything to do with the accelerator problem. I was just hoping I could kill two birds with one stone.
I am not sure if the exhaust valve could be the problem or not. It has happened once when the motor was warm. I have read some postings where a similar problem was caused by sensors on the accelerator pedal. They seemed to have a lot more problems though.
Thanks for the feedback!
I am not sure if the exhaust valve could be the problem or not. It has happened once when the motor was warm. I have read some postings where a similar problem was caused by sensors on the accelerator pedal. They seemed to have a lot more problems though.
Thanks for the feedback!
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