kellen nitz

my car is a 2000 gt 5 spd and it wont idle or it idles very low and fluctuates. i have an exaust leak coming from the header from the drivers side (long tube headers) system to lean. there was a missfire on cylinder one one code but we changed the spark plugs and that code has not come back. Please help it is my daily driver so it would be nice if it would idle correctly.

SilvrStang

Have you checked your alternator? Cleaned your MAF and IAC? try to do that

avlon06

+1 on cleaning the IAC

use carb cleaner

darkstarnes

maybe any vacuum leaks.

blee69mustang

+2 cleaning it solved my bad idle