Idle issues....

[rabidscoobie]

The car runs fine,starts good,no check engine light,nothing obvious.The problem is when I come to a stop it will start to idle down normal but when it hits 1k on the tach it will hold at 1k for few secs then idle down to normal.What would be the cause?Changed plugs and filters about 8k ago with motorcraft.

Also every once in awhile early mornings for the 1st start up of the day I can sometimes hear a small backfire under the passenger side.The altenator was changed last october.Never changed boots,coils, or o2's.

 

[AdRock]

The holding at 1k for a few seconds is normal as far as I know. My '02 GT has done it since the day I bought it and every new edge stang I've ever driven has done that. If you have a backfire you would hear it up under the hood because it's shooting back into the intake. A backfire is not normally heard under the car. You might possibly be hearing an exhaust leak when everything is cold. My car has a small exhaust leak on first startup in the morning but once everything warms up the metal expands and the leak goes away.

 

[rabidscoobie]

Well thats kinda strange for mine,Ive had this car for 5 years now and its only started in the last week or so.Thats why im wondering whats the cause...thought something is wrong.The backfire sounds right at the firewall and I dont have any signs or symptoms of an exhaust leak now.Thx for the info.

 

[2000fordstanggt]

i also have the "hanging idle"
although when i first start the car and am driving before it gets to operating temp the hanging idle is gone. itll stay that way until i turn on the anything that engages the ac compressor.
after that she'll "hang" until the next cold start

makes me wonder..

 

[andysm]

Keep in mind all new edge gt's go through idle air senors fast. Very, very common problem but just a quick easy $50 fix.

Also the hanging idle can be fixed with an idle air mod.

 

[rabidscoobie]

Well today the idle went very eratic,bouncing between 1k and about 200 or just stalled out and not only that but the clutch was chattering,Im not gonna worry about right now.I got my eye on a new car and as long as the financing works out Ill have it.Heres a sample

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