OL AFR vs Coolant Temp
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Car: 90 454SS
Engine: 454 TBI
Transmission: TH400
OL AFR vs Coolant Temp
What is this table used for?
Also, Open Loop AFR vs Vac?
To lower IAC counts, would it be beneficial to lower settings in IAC Motor Reset Postion vs Barometer?
$85 16147060
OK, I think I found most of it. The first 2 apply at idle only, correct?
Also, Open Loop AFR vs Vac?
To lower IAC counts, would it be beneficial to lower settings in IAC Motor Reset Postion vs Barometer?
$85 16147060
OK, I think I found most of it. The first 2 apply at idle only, correct?
Last edited by va454ss; Nov 12, 2005 at 07:54 PM.
Joined: Jan 2005
Posts: 10,425
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From: Hurst, Texas
Car: 1983 G20 Chevy
Engine: 305 TPI
Transmission: 4L60
Axle/Gears: 14 bolt with 3.07 gears
The AFR vs. coolant gives more fuel to the engine when it is still cold or starts to overheat. You can dial in the basic air/fuel mixture here. The AFR vs. Vac, changes the air fuel ratio with engine vacuum. Generally the higher the vacuum the less fuel the engine needs. These tables are added togather and used for fuel calculations when in open loop. It is also used in closed loop calculations, just the O2 sensor is correcting the mixture to 14.7:1.
Changing the IAC position at reset is benificial if you have a RPM flare at start-up.
Changing the IAC position at reset is benificial if you have a RPM flare at start-up.
