URGENT: Please Help, my truck die, no idle, only when I press gas. Stuck at the mall

[PSItuning.ca]

Hey guys,
I am having a big problem.
I went to the mall everything was fine.
Then I came back, tried to start the truck and the engine dies right away.
When I press the gas its ok, but as soon I release my foot from the pedal it die.
It did that only once before, then I pressed the gas for a few mins, holding it to 1500 rpm. Then it was fine and idle ok. But this time nothing to do, it just dies, even when the engine is warm.

I tried to tight up the idle screw adjustment a bit. But the bolt is stuck and broke on me. I have only about 5 mm of reach and cant seem to get it with the vice grip. Anyway idle always been fine. I suspect something else must have caused this problem.

I did some search and there is some post about cleaning the IAC valve on the throttle body. Could that be the problem? like it got stick and kills my idle?

Please help, I need to get the truck from the parking at the mall.
Any tips will be highly appreciated!

thank you
Pat

 

[ishmelvampire]

hey man

there is your throttle plate that works with the iac. take of your air duct going to it and buy some cci air intake cleaner and a rage . spray the cleaner on the rage and wipe the throttle plate real good and the hole area it closes on. okay. the plate never really fully closes. if it does that iac valve will have to work to hard and it will die. cleaning this are should help try it. cheap and easy to do. that carbon builds up on there and clogs that plate.clean it. hold the plate open and wipe that whole are out with the cleaner on the rag. alot of folks dont know this. iam a mechanic and I do know this.

 

[aldive]

Your symptoms point to a faulty IAC.

Good luck ......

 

[PSItuning.ca]

cleaned up the IAC as mentionned in one of the post here.
I used WD40, then I dried it with an hair dryer.
Then I cleaned the throttle body plate and section around as you mentionned.
I reinstalled everything and it worked.
Awesome!!!
thanks for the tips, it was a cheap fix. Did that once, I am pretty sure my IAC was too dirty, I had tons of carbon deposits inside.

 

[ishmelvampire]

cool

i am glad that it helped man. they recomend cleaning that throttle plate area with every oil change it will slow that iac valve from getting nasty do it about every 3000 miles glad I could help man.

 

[KPT]

i am glad that it helped man. they recomend cleaning that throttle plate area with every oil change it will slow that iac valve from getting nasty do it about every 3000 miles glad I could help man.

Actually ford suggests to never clean the TB. I have in the past though.

 

[ExplorerDMB]

There is a coating on the Throttle Body that can deteriate if using the wrong chemical cleaner!

-Drew

 

[Phredawgy]

Actually ford suggests to never clean the TB. I have in the past though.

Some if not alot of Ford's suggestions are worth about as much as the Auto Repair advice you get from AutoZone employees(not worth much in most cases)