hello everyone, i need some advice i have a 97 f150 4.2 five speed, the problem occurs when coming to a stop the truck shuts off,while yo are driving the truck does great just when you come to a stop, new fuel filter new plugs, i am not sure what direction i need to take to fix the problem any help would be appreciated. also love the site i have owned 5 ford trucks and loved everyone of them

 

Hi and glad you found us here at FTE!
Hope you like it and stick around.

I'm just guessing that the problem might be with the IAC.
Idle
Air
Controler

It is mounted up near the throttle body and is responsible for bleeding the proper amount of air into the intake stream to keep the engine idleing smoothly.
I have never had a problem with one, but seem to remember reading where a few guys removed theirs and found the small opening(s) were clogged or partially clogged. Cleaning solved the problem.
There are other things that might cause the problem you describe, (like maybe a vacuum leak somewhere or the TPS)) but the IAC is where I would start.

Just curious, does it stall with the AC on and/or the AC off?

Keep us posted!

Thanks.

edit to add:
Can you unplug the electrical connector at the IAC and see if it will idle without the IAC hooked up?

 

no it made no difference with the a/c on or off, thanks for the info i will try that and see how it works i appreciate it.