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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

5.8 Sputtering at higher RPM's

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Old May 15, 2009 | 11:19 PM
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BAD351W
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5.8 Sputtering at higher RPM's

So I just took everything after the cat, off my truck. It sounds boss as anything and I love it. But I went to wash my truck today, and after that. The truck now sputters and seems really choked up at any RPM higher then 2500-3000. Almost like it is skipping when you try to rev it out. Itll pop and sputter and obviously not run right. Yet it runs great at lower RPM's. I figured it was just a little water in the exhaust, and that it would evaporate once the truck got a little hot. But after driving on the highway 25 miles round trip, its still the same. What could my problem be?

The truck is a 1996 F-250 with a 5.8 and a E4OD.
 
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Old May 16, 2009 | 04:41 AM
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Did you get water on the plug wires and distributer cap? Might be worth taking cap off and checking for moisture and drying it and the wires and the coil.
 
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Old May 16, 2009 | 08:55 AM
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I thought of that, but I figured that since I didnt open the hood at all when I washed the truck, nothing should have gotten really wet under there.
 
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Old May 16, 2009 | 09:10 AM
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I would agree. I wonder then has the interior of the cat broken up and causing a partial blockage?
 
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