Low idle
Thread Starter
Safety Car
Joined: Jul 2001
Posts: 4,871
Likes: 15
From: Detroit's West Side MI
Low idle
Seems ok now, sorry for wasting bandwidth.
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Hopefully this is the last of my woes.
Yesterday the car idled well, right around 800 rpm as it always did. I burped the cooling system and everything seemed fine.
Today it's idling really low, damn near stall (between 4-500 rpm) and staying there, the fans are kicking on way early.
We know my electrical system is a little flaky right now, but is there anything in particular that might be causing this? I know on some cars the computer needs to relearn things so they run rough for a bit after the battery is disconnected, is that what I'm experiencing?
Oh, and it's running rich. I smell fuel in the exhaust.
I played around, revved it, backed it down the driveway (can't drive it, no headlights) and now it's up to 800. Guess I'll go light up a smoke in my fuel filled garage...
-----------------------------------------------------------
Hopefully this is the last of my woes.
Yesterday the car idled well, right around 800 rpm as it always did. I burped the cooling system and everything seemed fine.
Today it's idling really low, damn near stall (between 4-500 rpm) and staying there, the fans are kicking on way early.
We know my electrical system is a little flaky right now, but is there anything in particular that might be causing this? I know on some cars the computer needs to relearn things so they run rough for a bit after the battery is disconnected, is that what I'm experiencing?
Oh, and it's running rich. I smell fuel in the exhaust.
I played around, revved it, backed it down the driveway (can't drive it, no headlights) and now it's up to 800. Guess I'll go light up a smoke in my fuel filled garage...
Last edited by ScaryFast; Jul 12, 2005 at 11:16 PM.
Le Mans Master
Joined: Dec 2004
Posts: 5,789
Likes: 8
From: Myrtle Beach SC
St. Jude Donor '05-'06
The "learning" does not take very long.A 1/2 hr drive should do it.Why are the fans coming on early is it over heating? Remember it may take a few heat cycles to get all the air out. Hope you did not damage it yesterday over heating it.
Richness is another issue.Mine ran rich when I got it due to the FPR leaking. Is it rich all the time or just start up?If it is all the time I would hook up a laptop w/Datamaster to it and check your O2s.
With a Datamaster scan you can see your Long term counts(BLM's) should be ~128 lower numbers mean richer higher leaner.If you O2 is bad that side should show a different BLM causing what is refered to as "Split Blms" they should (left&right) be =
Your O2s should read ~800 but it kinda hard to see it as they constantly pulse low and high but the average should be around 800.I could tell mine was bad because it was slower to respond than the one that worked right.
I know I am gettin all technical on you but an old laptop with the free download and a cable from ALDLcables.com will plug right in and is a good tool to have.
Richness is another issue.Mine ran rich when I got it due to the FPR leaking. Is it rich all the time or just start up?If it is all the time I would hook up a laptop w/Datamaster to it and check your O2s.
With a Datamaster scan you can see your Long term counts(BLM's) should be ~128 lower numbers mean richer higher leaner.If you O2 is bad that side should show a different BLM causing what is refered to as "Split Blms" they should (left&right) be =
Your O2s should read ~800 but it kinda hard to see it as they constantly pulse low and high but the average should be around 800.I could tell mine was bad because it was slower to respond than the one that worked right.
I know I am gettin all technical on you but an old laptop with the free download and a cable from ALDLcables.com will plug right in and is a good tool to have.
Last edited by Redeasysport; Jul 12, 2005 at 11:17 PM.
