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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

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Old 08-14-2007, 05:07 PM
351slug 351slug is offline
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TPS replacement

It looks like the throttle body needs to come off to change it. Can I reuse the TB gasket? What else do I need to know. I am getting a code for it and the MAP sensor. Runs ok but cuts out during heavy throttle and have to let off to run smooth again.
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Old 08-14-2007, 05:20 PM
mhg mhg is offline
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Test it first
www.fordfuelinjection.com will show you the procedure
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Old 08-14-2007, 05:46 PM
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Moore558 Moore558 is offline
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What are the code numbers your getting?

My F150 was doing the same thing when I got it. What was happening was the TPS voltage was dropping to 0 under hard throttle and it shouldn't have been doing that. I replaced the TPS and also found out the pigtail from the ecu harness had gone bad and it was the primary reason that my TPS failed. I replaced both the TPS and pigtail and haven't had any problems afterwards.

Yes the Throttle Body does have to come off, but a new TB gasket is under $5 so just buy a new one to be safe.
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Last edited by Moore558; 08-14-2007 at 05:47 PM. Reason: Need to restate question.
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Old 08-14-2007, 05:55 PM
TheRoadVirus TheRoadVirus is offline
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I just replaced mine the other day and I had a new gasket thinking I would need it for sure and it ended up being fine and dandy. In fact it was in such good shape even If I did replace it there would be no scraping necessary.
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Old 08-14-2007, 08:41 PM
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I reused my gasket and it worked out fine but it wouldnt hurt to replace it. Be sure to have something ready to plug the coolant lines or you will be sopping up alot of antifreeze. Soak the bolts for the throttle body with pb blaster first. Also, to keep from stripping the TPS screws, give them a little turn tight to break them loose then turn them loose and out. Be careful with the cables on the top of the TB so that you dont break anything when you take them off. And remember where and how everything goes so it goes back together easier.
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Old 08-14-2007, 11:48 PM
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Overkill-F1 Overkill-F1 is offline
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I didn't disconnect the coolant lines when I re & re'd my TPS, they were long enough to leave them connected and still do the replacement. I used the old gasket to trace and cut out a new one.
...Terry '90 F150 302
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Old 08-15-2007, 04:48 AM
351slug 351slug is offline
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OK thanks. I am getting codes 121,122,128. I had a coolant leak on bottom line to TB for about a year, could have got inside TPS.?
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Old 08-15-2007, 06:13 AM
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I had to disconnect mine only because the screws were so tight on the TPS that I had to push hard against them with the screwdriver to keep them from stripping when I turned them. I could have got them with a phillips head bit in a 1/4 inch socket without removing the coolant lines if the stupid screws would have came out easier.
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Old 08-15-2007, 06:13 AM
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Go Back   Ford Truck Enthusiasts Forums > Older, Classic & Antique Trucks > 1987 - 1996 F150 & Larger F-Series Trucks

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1987, 1994, 1996, 2004, 351, f150, ford, position, problems, removing, replace, replacement, sensor, throttle, tps, trcck

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