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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 misses?

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Old Nov 25, 2012 | 06:08 PM
  #1  
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Bigblue351
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From: Kelowna, B.C
5.8 misses?

Truck misses or chugs under load. only while accelerating say up a hill. Cant figure it out.

Fuel filter, plugs, wires, cap, rotor, coil all new within last 6-8 months.

ideas? Checked the codes no new codes and no CEL.. Where should i start. its getting annoying!

97 5.8L
 
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Old Nov 25, 2012 | 06:57 PM
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Could be your tranny and/or torque converter. If your gearing is chewed up. Just my two cents
 
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Old Nov 25, 2012 | 07:28 PM
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Seems unlikey. Still shifts good. Zf5 speed
 
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Old Nov 25, 2012 | 07:44 PM
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check fuel pressure. how many miles are on your truck
 
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Old Nov 25, 2012 | 07:58 PM
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Bigblue351
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195.000 kms ill check the pressure tomarrow. And it only
Does it 1000-1800ish rpms underload. Like chuggin up a hill
 
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Old Nov 26, 2012 | 05:04 PM
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Come to think of it. I had a friend who had the same problem when he was loaded. he said his truck skipped or "chugged". He found that when he was loaded down a wire was being crimped and shorting out. The wire had something to do with the shifting sensor or something. he said he re routed the wire and it solved his problem. not sure if this helps...
 
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Old Nov 26, 2012 | 05:08 PM
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What brand plugs and wires did you use? I've seen LOTS of problems with budget wires.
 
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Old Nov 26, 2012 | 06:38 PM
  #8  
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The nicer Napa wires and autolite? copper plugs.
 
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