Truck wants to stall

[kevinw2345]

Hey guys i belive i posted this on someone elses thread but i didnt get much response. Every once and a while when i drive my truck and come to a stop the truck slowly starts to shake and the lights start to dim, the rpms drop like its about to stall. I dont know too much about vehicle mechanics so i dont know what it is that is causing it. All i know is if its something to do with an engine part or alternator then its still covere under my lease warranty. Any input would be nice, thanks guys.

 

[rburch]

Read the sticky in the Tech Info section!

 

[GAINMOB]

check and make sure all your hoses and intake are on and clamp'd good...

 

[walnuts4x4]

read Lane24's thread

http://expeditionforum.com/showthread.php?t=4926

 

[kevinw2345]

Thanks guys, i will buy the piece and have a look. Hopefully that fixes the problem.

 

[walnuts4x4]

if you have a hole in the hose... replace it with 2 small hose clamps and some heavy duty 1/2" air hose... thats what I did.... been holding for 1.5 years...lol

 

[1997SCEBFEX]

Agree w/ all above. If alternator/voltage reg module is going, you may have similar probs as well as gauges eratically moving left/right and of course dimming lights. Any chance your drive belt could be loose and your alternator isn't charging the battery correctly?

 

[masterhacker]

Sounds like a Iac (idle air control valve) I think that they put them on modular v8's (i could be wrong). anyways you just pull it off and spray the crap out of it with carb cleaner. I used to have a explorer that would dp exactly what you described, i had to clean it like every 20,000 miles

also try cleaning your Maf sensor, or even better replace it


Guide for doing it on a 5.4 (they are pretty much the same on any vehicle that has one)
http://www.ford-trucks.com/forums/970611-how-to-clean-the-iac-valve-on-the-5-4l-triton.html
http://www.explorer4x4.com/iac.htm