97 Suburban new MPFI now high idle speed
March 28th, 2017, 10:28 PM
#1
CF Beginner
Thread Starter
Join Date: Mar 2017
Posts: 1
Likes: 0
Received 0 Likes
on
0 Posts
97 Suburban new MPFI now high idle speed
Just replaced the old injector spider with the new MPFI system. Replaced plugs same time. Now have issue of fast idle: 1200-1500 rpm when in park, about 1200 in drive while braked. Any ideas as to what might be issue? Also replaced Idle Air Control valve.
Last edited by clavis; March 29th, 2017 at 5:26 PM.
