high idle ?
Thread Starter
Drifting
Joined: Oct 2005
Posts: 1,915
Likes: 48
From: Angier nc
high idle ?
hello everyone,my idle stays around 1000rpm hot or cold.i have never seen it below 900 rpm.shouldnt it be lower?700 rpm maybe?this is my first fuel injected car(yeah i know you thought dinosaurs were extinct,we just drive old dodges),where should i start looking to remedy this?thanks in advance, george.
Le Mans Master
Joined: Dec 2000
Posts: 7,839
Likes: 22
From: San Diego, Ca
You can scan it and see what the ECM is seeing - Should be +/- 100 RPMs from Targeted in Park/Neutral and/or +/- 50 RPMs in Drive. If idle is greater than these numbers, should be generating a code in the low 500's. Assuming it agrees with your TACH and you get the above, check Coolant Temp and Air Temp Signals cold (should be close to ambient) and that the Coolant Temp Signal is somewhere around the Thermostat at cruise, within range of the fans at idle - a/c off.
Melting Slicks
Joined: May 2005
Posts: 2,730
Likes: 1
From: Atoka Oklahoma
St. Jude Donor 06
Check out this thread. I found what my problem was. Becareful since it is easy to throw money at it and the problem still stays. http://forums.corvetteforum.com/show...00&forum_id=48
How many miles do you have on yours? Have you checked all the vac lines? Have you looked at the TB? It could be gummed up or worse case the shaft can have alittle wear.
Vader86 has a helpful website. Click on his profile for website
How many miles do you have on yours? Have you checked all the vac lines? Have you looked at the TB? It could be gummed up or worse case the shaft can have alittle wear.
Vader86 has a helpful website. Click on his profile for website
Drifting
Joined: Jun 2005
Posts: 1,426
Likes: 1
From: brookville pa.
high idle
my 90 did same thing, but was even higher 1400/1600 one day it would idle fine next day back up. if yours does that it could be ecm i replaced ecm and it idles around 800, just something to think about if everything else turns out ok
Thread Starter
Drifting
Joined: Oct 2005
Posts: 1,915
Likes: 48
From: Angier nc
car has 91k on it and everything else works and runs fine.no ses light.i havent checked anything closely yet.just looking for a heads up from anyone who has had the same problem.time to get dirty. 
Melting Slicks
Joined: May 2005
Posts: 2,730
Likes: 1
From: Atoka Oklahoma
St. Jude Donor 06
Once you find the problem regardless of what it is, do a follow up post and lets us know what you found.
There are several new threads a week that have some type of idle issues and a follow up post will help them (us) out also.
There are several new threads a week that have some type of idle issues and a follow up post will help them (us) out also.
