Strange A/F - way too rich in vacc?
Strange A/F - way too rich in vacc?
Hey,
I installed an Rtek 2.0 recently and noticed that the car is running very, very rich in vaccum. For example, it idles at 11.3 - regardles if the engine is cold or hot.
At 1/3 throttle, the LM-1 reads low 12's or high 11's. Half throttle...in the 11's.
I have checked, and re-checked the TPS. And recalibrated the LM-1. The only thing that I can think that can be causing this is the Water Thermo Sensor. If that sensor went bad, then I think it defaults to its "cold" engine resistance. That way, the ECU thinks the engine is always cold. That may be causing the too rich readings. However, when I pull codes from the Rtek, the water thermo sensor does not pull a code.
The car is an S4 TII, 550/720 injectors, Hybrid T04b turbo, 9.0 comp rotors, streetport.
What else can cause such a rich condition during vaccum?
-a
I installed an Rtek 2.0 recently and noticed that the car is running very, very rich in vaccum. For example, it idles at 11.3 - regardles if the engine is cold or hot.
At 1/3 throttle, the LM-1 reads low 12's or high 11's. Half throttle...in the 11's.
I have checked, and re-checked the TPS. And recalibrated the LM-1. The only thing that I can think that can be causing this is the Water Thermo Sensor. If that sensor went bad, then I think it defaults to its "cold" engine resistance. That way, the ECU thinks the engine is always cold. That may be causing the too rich readings. However, when I pull codes from the Rtek, the water thermo sensor does not pull a code.
The car is an S4 TII, 550/720 injectors, Hybrid T04b turbo, 9.0 comp rotors, streetport.
What else can cause such a rich condition during vaccum?
-a
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t-von
3rd Generation Specific (1993-2002)
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Sep 10, 2015 01:56 PM