99 mustang idle issue

ADW1328

Forum Member
car has 50k on it,just replaced the idle control valve, cleaned the mass air flow sensor, new plugs ,cleaned the K N air filter,and the car is still surging. not as bad as it was before but, while your @ a light the rpms keep going up and down from 500-1000 rpms. any ideas ..please help
 
Clean the MAF.. the K&N is an oiled type filter and the oil usually gunks the maf up and causes issues. Clean it. If you don't know what you're doing read the directions on the can carefully. It's not a big deal really.
 
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