Strange A/F Ratio readings ... HELP! - Saab 900 Bulletin Board - Saabnet.com
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Strange A/F Ratio readings ... HELP!
Posted by Chris A. in N. VA [Email] (more from Chris A. in N. VA) on Sun, 15 Jun 2003 20:39:10
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Ok, so I solved a rough-idle then stall issue with new spark plugs, rotor, and distributor cap. Then ...
I hooked up an A/F ratio gauge (summit racing nodskog I think) and at idle it fluctuates between no bars lit, to one yellow bar rich. With throttle applied no bars light up. As soon as you lift off the throttle the lights fluctuate as they do at idle.
What is wrong with this reading?? I have it grounded into the engine lift point (at then end of the fuel rail), and it's getting signal from the 02 sensor plug. The O2 sensor is new within the past year. Any suggestions would be greatly appreciated, as I am going on a road trip on Tuesday this car needs to be solid!!
Thanks!
Chris
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