ryan_89_mustang

I seem to have a miss at idle but when the car is at warm idle only. when the car is cold revving approximately 1400rpms i can not hear any miss. When it goes down to its warm idle you can hear like a dead sound in the exhaust like an air sound like tuh tuh Thats the best i can describe it. Also the the plugs and wires are new and dielectric grease on everything. Anyone have an idea?

aode08

Open the MAF element plastic piece and spray the element with electrical contact cleaner.

Check the air filter and also, run a can of throttle body cleaner spray through the throttle body.

The 5.0 is a Carbon Tank.

mjr46

runs a koer/ cylinder balance test.