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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

Problem with my 96 f150

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Old Jul 21, 2011 | 07:34 AM
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Problem with my 96 f150

hey guys i need some help, ive got a 96 f150 5.0 4x4, the truck idles fine but when your driven and putting it under a load like going up a hill or really getting on it. It starts to bogg down and you can start to hear it (labor) knock. Ive done a tune up plugs, wires, cap & rotor. I need it fixed cant stand my truck not running right. thanks
 
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Old Jul 21, 2011 | 07:46 AM
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From: Easton,Ks
You need to have a scanner ran on your tuck to see if you have nay codes.
Other than that it sounds like it is running too lean.
Maybe the TPS is bad.
 
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Old Jul 22, 2011 | 10:49 PM
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went to autozone put scanner on it and it passed. then took it to a local shop check the timing and fuel pressure and it was all good. What could it be any info would be great.
 
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Old Jul 22, 2011 | 11:03 PM
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did you at all mess with the timing by any chance or do any thing involving the distributor (ie take it off)?
 
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Old Jul 23, 2011 | 06:18 AM
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From: Easton,Ks
Does sound like a bad TPS.
Was there a WOT test during the scan?
 
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Old Jul 23, 2011 | 11:02 AM
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how long ago did you do the tune up. up a vacuum guage on it if the needle wobbles then your timing chain is streched and probly needs to be replaced. you might even pull the plugs and get a look at them if the color is off you need to fix that problem and check for knock again
 
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Old Jul 23, 2011 | 11:16 AM
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From: Calverton
Originally Posted by NmB
went to autozone put scanner on it and it passed. then took it to a local shop check the timing and fuel pressure and it was all good. What could it be any info would be great.

No codes, I would look to do a vacuum test, and run with a fuel gauge hooked up. A vacuum leak is consistent with a lose of power on a upgrade.
 
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Old Jul 23, 2011 | 12:04 PM
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Not sure what a Wot scan is? I checked the timing and it was good. havnt messed with the distrutor. i thought it sounded like the TPS but should throw a code right? could it have anything to do with the trans?
 
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