pig rich

[stsplash]

hey guys got some prob. here for you at idle
maf=5
o2=830-870
tps=.48
iac=41
a/f=14.8
fuel pressure line off=39lb.
new denso 02
its just running very rich at idle and cruising any help would be greatly appreciated

 

[zam70]

looks like the IAC is WAY high, sould be 10 - 20 at idle....go to www.gnttype.org, and look for how to set it.
Basically, it looks like your throttle blade is to far closed. Engine isn't getting enough air at idle.

 

[U1ARUNIT]

Some info:

1) IAC of 10-50 WARM and in DRIVE at idle is okay.

2) The more that the throttle blade is closed will RAISE the IAC number. Basically you are getting more air bypassed when its more closed so the IAC counts will be higher. If you really want to lower the number you will need to turn the screw in tighter which will lower the number and decrease the counts. It works opposite of conventional thinking.

After each SMALL adjustment be sure to restart the car so the change takes effect.

Set your TPS a little lower like around .40-.44v at most. Otherwise the ECM thinks you have your foot on the gas or are off idle.

 

[xxninja]

yea your IAC AND TPS are sort of high



when your TPS is over .46 at idle
the car isnt even recognizing the car is idiling

try lowering your iac to 20-30 at idle warmed up
i believe it has to be in gear with your good on the brake for the proper IAC reading


and get that tps under .46
try for .42 or .44

 

[XXQUICK6XX]

Rich

Also check for a vacumn leak!

Steve

 

[stsplash]

ill check out everything thanks alot guys i do know it is not a vac. leak just replaced all hoses and have 20in of vac.