Hi

where can i get part number for IMRC for Ford F-150 2006.....automatic 4x4, 5.4L V8 gas

thanx a lot

 

I've been looking all week for anything about an IMRC for my 2006 f-150 5.4. Took it to the dealer after engine just flat dies on the road out of the blue.. Displays engine shutdown, after 2 days dealer says it needs a new throttle body and an IMRC($1,000.00). I know what a Throttle body is so I start asking questions.. and was told some error codes displays IMRC stuck open/shut, and Throttle position sensor error codes. They said the TPS could not be replaced on its on, as it is built in the Throttle Body... which come to find out is not true. Talked to my dad who said he has replaced many TPS (all on Fords) and he can help me do the job. But he has never heard of a IMRC . Called a few auto parts stores, never heard of it. Called a different Dealer (as I am not confident in the one i had my truck serviced in, plus felt not only were they over charging me and not being honest but being downright rude to me in the process) They never heard of it, but said they would look at it if i like... or get the part number and they would assist me. Problem is I have no idea what it looks like or where it is at. Found some good info on the internet but nothing about my specific model. They also had a TPS for 100.00 or my local part store could get it for 80.00... but not sure what to do about the IMRC. Do you know where it is at on the engine? Any help you could offer would be appreciated.

 

Don't know if this is of any help to you, but the IMRC is the Intake Manifold Runner Control. Don't know for sure if it is used on the 3-valve engine, but it is used on my '02 Navi with the 5.4 4-valve engine (also been into it on the 4-valve Durateck V6 in the Contour SVT.)

It is a second set of throttle blades that are located in the lower intake on just one set of intake runners/valves for each cylinder. These throttle valves (connected to each other by a throttle shaft(s)/rods? ) are held closed at lower RPM to increase velocity in the intake track to boost torque. At higher engine speeds, the PCM activtes the IMRC control box to open this second set of throttle blades in increase air flow and horsepower in the upper RPM ranges.

The control box can fail and leave the second set of throttle blades open all the time or closed all the time.

I think the 3-valve engine uses what Ford calls the CMCV (Charge Motion Control Valve) which functionally is similar to the IMRC. It should be located behind the intake manifold. (Just watch you don't get your fingers caught in the linkage to the throttle rods as the springs are pretty strong.)

I suspect your throttle body used the "drive by wire" throttle control. It may use a specific TPS strategy that used dual TPSs - duh no. Hopefully some one will be along that can be more specfic.