RPM drop power loss - Ford Powerstroke Diesel Forum
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post #1 of 1 Old 03-19-2014, 11:41 AM Thread Starter
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RPM drop power loss

I have a 99 powerstroke auto trans, that seems to to run normally but occassionally as the truck almost comes to a stop or when the truck is stopped the rpms will drop almost to the point of stalling. The engine has not stalled to this point but I've notice several things, one the overdrive light on the shift lever comes on for several minutes then goes out. Several times after the event when trying to accelerate the rpm come up normally but the truck is slow to start moving but then suddenly everything is back to normal. Several times when the rpms drop the truck acted like it was trying to lurch forward but because the brakes where applied I remained still. Any thoughts would be appreciated.
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rpm drop power loss

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