97 Suburban new MPFI now high idle speed
March 28th, 2017 | 11:28 PM
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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 6:26 PM.