Idle!!!

[The Stang GT]

Why when i have my car in neutral it just shuts down, or when i put the car under heavy braking, it just shuts off, I was thinking that i adjust the idle screw and see what happens, what do u guys think??

 

[Dragstr05]

Sounds like an IAC problem.

 

[The Stang GT]

Wat exactly is the IAC???

 

[ponysarepretty]

idle air control, its the shiny cylinder at the front of your upper plenum.

 

[1LowGT]

ide air control dont adjust anything fix the problem at hand,or the tps will be reading higher at idle than it needs to be,

 

[The Stang GT]

What exactly is the tps???

 

[stangGT97]

What exactly is the tps???

throttle position sensor. Do a search, there are about 300,000 threads about the IAC and how to replace it

 

[Dragstr05]

IAC = idle air control valve. It lets a certain amount of air into the engine when the throttle plate is closed. If the IAC is clogged or restricted, the engine will stall because it is being starved of air.

The TPS is the throttle position senser, located on the throttle body. When you open/close the throttle, the tps moves accordingly and sends a signal to the computer saying what the position of the throttle is. This is why you usually need to adjust the tps after installing a new throttle body.

I still believe your problem is the IAC. They arent too expensive, I believe probably 30 or 40 bucks but I'm not too sure. Replace that and it should fix your problem.

 

[stangGT97]

$49.99 at Autozone
IAC

Some will tell you that you should only buy an OEM IAC, but I haven't run into any problems yet with the AZ one

 

[hotmustang331]

You can also remove it and clean it with break cleaner/WD40 ect. Worked when mine was starting to die for no reason coming to a stop.