Having problems with your 2004 Ford F150 ?

Where is the iac valve on a 2003 f150 5.4l triton v8? my truck will idle steady but when shifted into drive or 1 the rpm drops and stalls engine, also when coming to a stop it will act like its stalling just before coming to a stop then the rpm will jump back up to normal, this will happen around 80% of the time i drive. Also when I get to 45mph the truck will shake fairly hard until i get to about 65mph and then its fine. Had some mechanic say it was my transmission going out from the torque co

Posted / edited by AnonymousUser on : 16-07-2018

Answers :

The iac is located on the throttle body. It should be on top to the rear area center. Go to kragen.com. Put in your info and a picture should show you what it looks like.
a0fd5e6.jpg\015\012\015\012\015\012its located on top of the air intake, Replacement is fairly simple, IAC stands for Idle Air Control Valve, it pretty much just regulates how much air the truck should take in while idling, make sure if you have to leave the iac holes open for a fair ammount of time to plug the holes with some shop towel to prevent dirt or dust from getting into the engine, the iac valve acts as a electronic relay to let the efi system know how much fuel to deliver to the engine. also the torque converter is located in the bell housing of the transmission, if your torque converter is going out, its gonna be terrible, trust me... check with a salvage yard to price a new torque converter or transmission all together, if the converter breaks, it could cause alot of engine problems as well (NOT GOOD). Hope this info was helpful! Good Luck and God Bless!
Repair Help & Product Troubleshooting for 2004 Ford F150

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