Quote:
Originally Posted by California98Civic
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Brucepick: I noticed you said that your car seemed to run an A/F ratio more rich when you went alt free, correct? I don't think I encountered that. Though longterm fuel trim was somewhat rich, 0.78 going out and 1.56 coming back, I am not sure that would be very unusual in my (admittedly spotty) observation of fuel trim data on my UG.
Great drive today!
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Wow - great drive, indeed!
As for my car's very rich mixture, this was in a test with the #15 fuse pulled to kill the alt. This was not the same as how you disabled your alt. And I could see that the computer was very unhappy with the missing fuse; it gave a check engine light after just a second or so, with 2 fault codes and a fast idle in addition to the rich mixture. Of course my computer would be different from yours, with the HX having lean burn capability.
Alt restart from switch ?
You wrote that on the way up you ran the alt for a couple minutes. Were you able to start the alt while the engine was running?? Or did you have to kill the engine to get the alt restarted when you restarted the engine?
Bruce