5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

good idle range

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Old 08-22-2007, 12:10 PM
  #21  
86GreenMachine
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Default RE: good idle range

TTT
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Old 08-22-2007, 12:25 PM
  #22  
Joel5.0
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Default RE: good idle range

Redo the base idle, set rpm w/IAC disconnected to ~650 rpms. For the TPS....just make sure it's within the .8 - 1.0 vdc window closed throttle, the computer will take care of the "rezero" process using the TPS minimum voltage reading as long as it falls within the "no failure zone" (=.5 - 1.19 vdc).....clear ECM memory (disconnect battery for 10-15 minutes).....rerun a KOEO and confirm there are no codes....start the engine and take a drive test......if you still have the problem, rerun the KOEO selftest, if the TPS code is logged.....it might need to be replaced.
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Old 08-22-2007, 12:31 PM
  #23  
86GreenMachine
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Default RE: good idle range

LUK
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Old 08-22-2007, 12:41 PM
  #24  
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Default RE: good idle range

K well my TPS voltage is.1. Do i need a new one?
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Old 08-22-2007, 01:36 PM
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Joel5.0
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Default RE: good idle range

ORIGINAL: 86GreenMachine

K well my TPS voltage is.1. Do i need a new one?
Yep.....looks like it....[&o].....check if the voltage increases IGN ON while you open the TB blade, but looks like that one is fubar......and yeah.....LUK.....
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