would anyone know where the IAC valve is located on this engine, i cant seem to find it. 2007 v6 4.0L Also the Schrader valve to test the fuel system pressure is not on the fuel rail.- thanks

 

There is no IAC with an electronic throttle body and the fuel pressure is read from a fuel pressure sensor with a scan tool.
You might try cleaning the air inlet of the throttle body with the special cleaner, BUT, do not attempt to move the throttle butterfly . That will destroy the inner workings of the electronic throttle body.

 

thank you hanky.
the problem i am chasing is a hard starting condition the engine stumbles then dies it takes about 4 to 5 turns on the ignition and then it remains running. i went ahead and disconnected the throttle body and cleaned it out with throttle cleaner and a toothbrush i found it pretty dirty with caked on oil and soot upon doing this the problem seems almost 70% better but however it stills does it 3 out of 8 starts. so now i see no iac valve thank you for the info. i was hoping to find a bad iac valve but i guess not. the other thing is the pcv valve do you know where the pcv valve may be? im lost i cant test the fuel pressure because i also do not see a schrader valve to hook up to.
thanks

 

and i do not have a scan tool available

 

Many auto supply stores will check your vehicle for codes and pending codes free of charge. It's always a good place to start. If it does have any codes let us know the code(s) or you can look them up on line .Can you do this?

 

thank you hanky but there is no check engine light on no codes

 

Something you can try,
Before turning the key to the start position,
Turn the key from off to on 3-4 times then attempt to start the vehicle, if it start easily there may be a problem with the fuel pump check valve.
Before going any further , what result do you get?