SUPERCHARGED FOXBODY MUSTANG WONT IDLE!!! HELP ASAP

[bmxharo55]

ok i have a 1989 Ford Mustang 5.0
Car has E303 Cam, 351w heads, Vortech V1 supercharger, trick flow intake (street heat), 30lb injectors, calibrated maf, ford svt roller rockers.
I bought the engine used with cam in it, i just dropped the engine and supercharger in my car and the car with not idle.
The car will start up and rev up to 3k rpm then slowly die down (wont idle)
it only runs when i hit the throttle.
I checked all vaccum lines and seem to be good.
timing is set right also.
I have a Vortech FMU in it now, stock fuel regulator also , fuel pump is not stock (bbk)
Im clueless to whats wrong with the car?

any help would be great

 

[jrichker]

See the "Surging Idle Checklist for help with all your idle/stall problems. Everything you need to find and fix idle problems is in there.

The first two posts contain all the updates to the fixes. At last count there were 24 possible causes and fixes for surging idle/stall problems. I continue to update it as more people post fixes or ask questions.