4.6L Idle Problems

shawn234 · 01-21-2002, 11:10 PM

Hello everyone,
I am having a problem with 4.6L. When I start it up cold it will not fast idle, and will eventually die all together. This problem mysteriously goes away once the car is warm. Does anyone out there have any information that might help me with this dilema?

Thanks,
Shawn

FoxBuilder · 01-22-2002, 12:35 PM

I would check the Idle Air Control solenoid. It is on the front of the upper intake, just below the running horse. There is an adjustment screw under the black cap located on the top of the solenoid. Under a cold start the IAC should open (just like opening the throttle plate) and allow the motor to idel higher. Mine usually will idel around 1000rpm.

01-21-2002, 11:10 PM	#1
shawn234 Registered Member Join Date: Jan 2002 Location: Nashville, TN Posts: 1	4.6L Idle Problems Hello everyone, I am having a problem with 4.6L. When I start it up cold it will not fast idle, and will eventually die all together. This problem mysteriously goes away once the car is warm. Does anyone out there have any information that might help me with this dilema? Thanks, Shawn

01-22-2002, 12:35 PM	#2
FoxBuilder Registered Member Join Date: Sep 1999 Location: Columbus, Ohio Posts: 233	I would check the Idle Air Control solenoid. It is on the front of the upper intake, just below the running horse. There is an adjustment screw under the black cap located on the top of the solenoid. Under a cold start the IAC should open (just like opening the throttle plate) and allow the motor to idel higher. Mine usually will idel around 1000rpm. __________________ 2001 Mustang GT 4.6L w/AODE: K&N FIPK kit, 87mm MAF, 19lbr., H-Pipe, Mufflers, 2.73, stock rubber, (4) custom programs by me using Autologic chips. Best E.T. 13.890@100.0mph 1984 Mustang LX 5.0L w/T-5: BOSS, TFSTW, Vic. Jr., BG, trick stick. Last edited by FoxBuilder; 01-22-2002 at 12:49 PM..

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