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.

need help with occasional rpm drop

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Old 05-01-2008, 06:22 PM
  #11  
88fox50
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Default RE: need help with occasional rpm drop

ORIGINAL: brentloftis

To replace the hose you only need to remove the upper plenum, and most of the time not all the way off, just enough to get access.
i see what you mean now ...thanks i will try that .
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Old 05-01-2008, 09:06 PM
  #12  
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Default RE: need help with occasional rpm drop

i got a long day ahead tomorrow trying to get to the bottom of this ....thanks everyone for your help....its much appriciated!
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Old 05-02-2008, 02:42 PM
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Default stuck after all this tweaking!! help

ok, i have replaced the IAC and have checked the base timing and its at about 10*.....when i put the spout connector back in it has trouble keeping a good idle...by good i mean constant ...it will revv to like 1500 then kill down to 1000 - 800 then the motor will look like its chuggin on the mounts then kick back up again....throttle response is good but somethings just not right...

so, so far i have done the following..

plugs, wires, cap & rotor, fuel filter, IAC valve, Coil, checked base timing =10*...any ideas now?
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