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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

Running Strange?

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Old Mar 19, 2008 | 06:12 PM
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gmcmatty90's Avatar
gmcmatty90
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Running Strange?

I have a 97 F-350 with a 5.8L and it is running very wierd. Sometimes it will run perfectly fine then sometimes it will stumble. It stumbles when it is idling and also going down the road. I can go down the road and step on the throttle slowly and it wont do anything, rpm wont change then eventually if i continue stepping on the throttle it will accelerate abruptly. Put it this way it kind of stutters as you slowly step on the throttle. This mostly happens when you get in the truck when it is cold and just drive but as it gets up to temp this doesnt change. It kind of feels like its getting loaded up with gas as i step on the throttle. Has anyone else experienced this kind of problem? If i could get some help with this i would really appreciate it. Thanks.
 
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Old Mar 19, 2008 | 07:39 PM
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sacheeze's Avatar
sacheeze
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running strange

Stuck or sticking intake butterfly or vacuum leaks. poor air control, dirty fuel filter or clogged return line. thats a start
Michael
 
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