View Single Post
 
Old 03-10-2012, 11:30 PM
chasec1 chasec1 is offline
Like the Forums
 
Join Date: Feb 2012
Posts: 35
Default Re: High idle when cold

Its normal, most engines on a cold start should rev up to 1.5k-2k on initial first start on cold morning, its the PCM controlling the idle, and it might take 10 seconds or 2 minutes to come back down to normal idling rpm depending on the outside conditions ie; humidity, ambient air temperature, engine temp, rich/lean o2 sensor. If It stays at 2k for over 5-10 mins then you might have a faulty IAC valve/sensor, or a leaking vacuum line. I have a 97 ranger 2.3 L, and i live in VA its been consistant 25-30 degrees every morning for months, mine revs to 2k and sits there for about 2 mins and slowly drops down to 800 rpm. Hope this helps
Reply With Quote