Hey guys I have a Autometer a/f gauge. It reads fine and a couple bars into green when driving. The moment i switch on my a/c it goes to the middle yellow bar and less, why is this? Stock ECU.

Thank you,
Jonas

 

PLEASE this is annoying me....HELP!!

 

If it makes you feel any better, mine does the same thing. It'll sometimes go REALLY lean if I idle for a long time. But once I give it gas it's back to normal.

 

I just bought one, and i can't freeking figure out how to install it...any help?

 

Check this out http://www.robrobinette.com/how_to_m...20O2%20Sensor.

 

At idle it should be off or just the first LEAN LED (Not enough exhaust heat to keep the sensor working) when crusing at a steady speed and no boost it should bounce rapidly back and forth between rich and lean (ECU is in CLOSED LOOP MODE) when Accelerating and/or producing boost it should read at least 1-2 LEDs RICH (at WOT 3 LEDs or more is normal) when DECELERATING w/ Closed throttle it should not show any LEDs (Anti After Burn mode - Shuts off fuel flow) With the AC on the Electrical Load Solenoid will add air & fuel to the IDLE map to prevent the AC from stalling the engine.

 

Thank you maxpesce thats exactly the info I needed. Also just wondering why it reds lean to average with A/C on though, you said the ECU compansates but how come it doesnt show it on the gauge?

Thank you!
Jonas