car tune gets rich at idle

jcothren · Post by **jcothren** » Tue Apr 08, 2008 7:03 pm

I have not changes the tune for 15000 mi and has alway idle at 14.5 and now will hit 14.5 for sec and then drop slow to 11.5 (after the car is warm) dont have wide band hooked up to the car and just got new sensor.
I have checked the map and the iat and the seem to be fine. The car runs fine when its not idleing And still holds good A/F under boost.

b18c sleeved
manley turbo tuff rods
weisco 9.5 1
victor x manifold
sk2 68mm tb
880cc
ported polish head
full-race top mount
gt37r
4 down pipe
s300 p28
aeromotive a1000 fuel pump and regulater

jcothren · Post by **jcothren** » Tue Apr 08, 2008 7:04 pm

96 integra gsr

jcothren · Post by **jcothren** » Tue Apr 08, 2008 7:19 pm

gm 3 bar map

Post by **Spunkster** » Wed Apr 09, 2008 9:31 am

If you don't have a wideband hooked up, how do you know what the AF is?

jcothren · Post by **jcothren** » Wed Apr 09, 2008 9:50 am

sorry dont have wide band hooked up to computer

Post by **Spunkster** » Wed Apr 09, 2008 11:51 am

you may have a leaking injector.

jcothren · Post by **jcothren** » Wed Apr 09, 2008 12:11 pm

when runing at 14.5 the inj (ms) reads 1.50s and when it gets rich it startes to read 1.70s (ms) on the display.

jcothren · Post by **jcothren** » Thu Apr 10, 2008 4:42 pm

Do you think it could be a blown head gaskit?

Post by **Spunkster** » Fri Apr 11, 2008 9:30 am

Impossible to tell from a calibration. You really need to do a leak down and compression test.

jcothren · Post by **jcothren** » Fri Apr 11, 2008 10:13 am

just did compression test 175,175, 180, 180, and then was looking down to the cylinder and seen a little puttle on the piston. i took a q tip and let it soke up and it was water.

alex@crx · Post by **alex@crx** » Mon Apr 14, 2008 9:48 pm

I have same trouble with new version of Smanager, when engine is warm & im going to Open Loop AFR going to 11. I have tried B16 stock map too on my B16 & same thing. :( With older version all was fine. I'm using 2 lambda: stock lambda on D14 & LC1 on D12. Where is trouble? At Closed Loop it working normally, Ltrim is 0%, Strim is not big too. Fuel tables are not so reach.

alex@crx · Post by **alex@crx** » Mon Apr 21, 2008 1:17 am

Any ideas why in open loop idle AFR is going so rich?

alex@crx · Post by **alex@crx** » Mon Apr 28, 2008 4:28 am

I have tried to going to Open Loop by minimize maximum MAP for closed loop & so open loop is working fine.