1993 ford tempo 2.3L 109,000 miles
One day started engine and idles at 3000 rpm. No check engine light, no codes stored, scanner shows normal values. Loud humming noise from intake tube between tb and maf. Replaced iac and engine now only idles down when snapping throttle and humming noise is gone. Turn car off and restart and engine idles at 3000 rpm again. What am I missing?
I reinstalled old iac and humming noise returned. Replaced maf along with new and old iac and no change in idle.
Checked engine temp sensor. Its good. What else am I missing?
Saturday, September 8th, 2007 AT 3:25 PM