Dark_Horse

if i start it with out giving it gas it wants to die it revs to less then 600rpms and dies, it sounds like it wants to run be just cant. if i give it gas for a few sec then let off it will drop down to 500rmps then hesitates up to like 700 then it idles, if its idleing and i give it a little gas quick (rev to 1800 ) it will go down to 500 then hesitates back to 700. what could cause this? what dose it sound like?

Dan04COBRA

Sounds like the ever so common IAC.

Dark_Horse

i tryed the one form the 4.6 that worked. and still it did it.

David_K

take it to go get tuned

04BlueGT

I think he has it. What ECU are you using? Is it the 4.6 or 5.4? When it does idle, is it rough or does it quit every time?

David_K

if he had it tuned take it back since its running like ****

Dark_Horse

i have bot had it tuned i am going to wait untill i break it in untill i do. the 4.6 ecu is suppose to be able to run the 5.4 fine

Dark_Horse

well i tryed a difrent IAC the one off of the 4.6 and guess what.... idles awsome!! so now i just have to fix my clutch. dose any one know how fast mustang tuning ships?

David_K

UPS ground. 3-5 days

czwalga00gt

Mustang tuning sucks.... after 4 orders, i've never had 1 that wasnt backordered. LMperformance is A+