Car won't idle when cold, AFR 10:0 - is it good?
12-02-2007, 08:23 AM
#1
Car won't idle when cold, AFR 10:0 - is it good? After cold start (at air temps of 40F) it won't idle without me pressing pedal. My cam is TR 214/220 .600/.523 115 LSA. Car has had a tune.
I've checked AFR in one of the banks, it goes as low as 10:1.
Is it normal with this cam?
Hate to drive it around town for first 3 minutes having to press both brake and gas pedals. Also, I can see that amount of gas in tank changes each minute during first minutes
I've checked AFR in one of the banks, it goes as low as 10:1.
Is it normal with this cam?
Hate to drive it around town for first 3 minutes having to press both brake and gas pedals. Also, I can see that amount of gas in tank changes each minute during first minutes
Last edited by Vetal; 12-02-2007 at 09:12 AM.
12-02-2007, 08:50 AM
#3
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With your "tune," you didn't get much of one...that is the problem. I would post your bin up here, there are alot of folks on here that will get it headed in the right direction. You could also take it back for a tune...from the guy that originally "tuned" it.
12-02-2007, 06:37 PM
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10:1 is "normal" for cold start enrichment but it ought to fade fast as
the engine warms up. The issue is more likely that the cold idle airflow
and idle speed settings are not providing enough air, or the air that is
being "asked for" is not coming in. That cam is not very big and it
should take only a little idle airflow tweaking to idle right.
the engine warms up. The issue is more likely that the cold idle airflow
and idle speed settings are not providing enough air, or the air that is
being "asked for" is not coming in. That cam is not very big and it
should take only a little idle airflow tweaking to idle right.
