2 problems when engine is hot

[allballsmustang]

i just finished my 306 install and im having 2 problems...they both happen when the engine gets hot...i have a nasty idle surge that stalls the engine as well as it cuts up under heavy load at high rpm(4800 and up) does this point to anything specific? so far ive done a new mass air sensor, plugs, wires, cap and rotor, coil, cleaned iac, checked tps voltage with key on eng off-.97, any suggestions? it idles great when its cold...i dont get it??

jim

 

[allballsmustang]

nobody?

 

[DURRETT]

i had same type problem ended up that a vac hose hade small cut in the end and was loose

 

[jrichker]

See "Surging Idle Checklist for help with all your idle/stall problems. The first two posts contain all the updates to the fixes. I continue to update it as more people post fixes or ask questions.