This is a discussion on Hanging Idle within the 94-95 5.0 Tuning forums, part of the 94-95 Tech category; I have just completed a 331 build in my 1995 mustang here is a brief rundown AFR heads Trick flow ...
I have just completed a 331 build in my 1995 mustang here is a brief rundown AFR heads Trick flow intake x 303 cam 75MM BBK throttle body 5 speed MSD dist 10-1 compression. The motor surges to 2000 and comes down slowly to 900 The car hangs between shifits and the idle is poor, The car has been at the tuner for a week still the same any suggestions very frustrating can't drive as it stalls.
Tuner still has car had is for a week. Put in new ecu still hangs and stalls What is ISC this is my first computer build Everything on this build is new except original 302 block bored .030. This is the second tuner the tuner that the car is now at thinks it may be in the throttle body he changed my 75mm BBK and put on a ford motor sport can't road test rain in mi and he was closing for the weekend
Looks like you have a 95 any of the same problems??? We purchased this car new family car that is in show room cond spent$$$$$$$$$$$$$$$$$ on bulid fast but won't idle hangs ans somtimes will stall
Like was aid the main cause is usually a vacuum leak. The second main cause is that the IAC is at or near it's limit of travel, usually because of a new TB - for that, set the TB to factory idle spec and do an IAC and TPS reset.
Don
Hanging Idle 
Linear Mode
