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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

Tps replacement.

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Old Jun 1, 2016 | 09:25 PM
  #1  
wtroger's Avatar
wtroger
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Tps replacement.

1992 f-150 5.0. I would gladly like to strangle the engineer that decided to put the Tps on the underside of the TB. Had to take TB off plenum to change it. But it did fix the cold start and idle issues. Also did a 3G upgrade while we where in there.
 
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Old Jun 3, 2016 | 10:04 PM
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I recently did exactly what you did. However I did the 3G upgrade first, I trimmed the bracket while still in the truck, later I found that the shavings F'd up my TPS. So I replace the TPS, twice! The first AutoZone TPS was crap right out of the box.
 
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Old Jun 3, 2016 | 11:07 PM
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Originally Posted by wtroger
1992 f-150 5.0. I would gladly like to strangle the engineer that decided to put the Tps on the underside of the TB. Had to take TB off plenum to change it. But it did fix the cold start and idle issues. Also did a 3G upgrade while we where in there.
What were the symptoms u were having? Because my truck all the sudden started to almost die at idle or after i let off the gas and stuff and am unsure why
 
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Old Jun 3, 2016 | 11:22 PM
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That could be a tps or iac. Mine wouldnt stay running at times without feathering the gas pedal.
 
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Old Jun 3, 2016 | 11:49 PM
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Originally Posted by phnguyk
That could be a tps or iac. Mine wouldnt stay running at times without feathering the gas pedal.
Is there a way to check those two sensors or do i just replace them and see?
 
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Old Jun 4, 2016 | 08:19 AM
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rla2005
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Originally Posted by Thedonk

Is there a way to check those two sensors or do i just replace them and see?
You can measure the TPS with a meter. I prefer voltage versus ohms.

You can also remove the IAC and inspect it for signs of carbon build up. It can be cleaned.
 
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Old Jun 4, 2016 | 11:53 AM
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Originally Posted by rla2005
You can measure the TPS with a meter. I prefer voltage versus ohms.

You can also remove the IAC and inspect it for signs of carbon build up. It can be cleaned.
I pulled iac off and it seemed really clean actually. How do u test the tps? I can borrow a meter from my dad
 
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Old Jun 4, 2016 | 07:26 PM
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His posted a code 63 saying Tps out of range. When we got in there the wires at the Tps didn't have any insulation. Symptoms where a very low idle and hard to keep running cold. Now we get the cold high idle settles down is whole lot better drive ability.
 
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