4.6L (1996-2004 Modular) Mustang Technical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within.

people who have had a rough idle

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Old 05-30-2006, 12:57 AM
  #1  
ackuric
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Default people who have had a rough idle

how did you remedy the situation?

iac, tb sensor, o2 plug, tune up, sea foam, coolant temp sensor, ect...

would like to fix my rough idle and i dont know what to do next, i've done seafoam/tune up, maybe i need a colder plug. can you test the iac like you can the tb sensor?
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Old 05-30-2006, 11:23 AM
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qbuswell
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Default RE: people who have had a rough idle

did you run the sea foam through the pcv valve vacuum line?
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Old 05-30-2006, 03:18 PM
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2002blkgt
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Default RE: people who have had a rough idle

unplug the battery negative for a few minutes and reconnect and let it run for at least 5 min. if this doesn't fix it, try shutting the car off and pumping the brake about 4 times and then start it. hope this helps. i fixed a high idle this way
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Old 05-30-2006, 03:21 PM
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marcuslee842
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Default RE: people who have had a rough idle

My idle is very bad, sometimes it even shuts off. I am throwing a code about TPS sensor A low input.
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Old 05-30-2006, 03:22 PM
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monkeydude3
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Default RE: people who have had a rough idle

may just need adjustment. could have something to do with that TB /plenum you added, because when you change those you gotta adjust the TP
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Old 05-30-2006, 03:30 PM
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marcuslee842
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Default RE: people who have had a rough idle

I am going to put it in the shop but things just keep coming up.[:@] We are having pretty good weather but my baby has to sit in the garage.
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Old 05-30-2006, 07:35 PM
  #7  
ackuric
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Default RE: people who have had a rough idle

yes i put the seafoam through my pcv valve. its only rough after she warms up, so im thinking its sensor related, but i dunno =/
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Old 05-30-2006, 08:30 PM
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2000GT4.6
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Default RE: people who have had a rough idle


ORIGINAL: ackuric

how did you remedy the situation?

iac, tb sensor, o2 plug, tune up, sea foam, coolant temp sensor, ect...

would like to fix my rough idle and i dont know what to do next, i've done seafoam/tune up, maybe i need a colder plug. can you test the iac like you can the tb sensor?
remove the aftermarket camshafts
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