Wideband problems
#1
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Hey guys, I installed my pnp and got the car started. I have the wideband sensor going into the megasquirt. I adjusted the settings to get it working properly, and it was for a while. Then the usb port failed to communicate, so I switched the usb port and re-established communications. At this point, the megatune AFR display started reading about 3.5 richer than what the UEGO was displaying. I believe that the UEGO is telling the true AFR. Any ideas? Was working, then all of the sudden no dice.
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#3
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The thing that really bothers me is that the megasquirt and the UEGO were tracking with each other, and then suddenly wouldn't. Just seemed like something strange, but I will make sure of that. I am going to check the actual voltage output from the UEGO tommorrow and see what it is saying. I will check all the grounds thouigh, just to be for certain.
#5
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So, I fixed the problem by simply redoing the grounds to a centralized place on the motor itself. This and I restarted my computer, and for some reason these fixed it. As of right now, the car runs relatively well. I get just a slight exhaust pop at idle. It idles right at 34kpa, and idles at 15 AFR. I tried using the afr targets, but I think that my VE table is just way too off for what I want. The datalogging is truly awesome though. I will continue to tune throughout the week, and hopefully will have a pretty good basetune down. Unfortunately, until I get my welder, I will not be able to delete the afm. But, the car runs really well.
I also forgot to mention that I was getting a reset about every 5 seconds or so, and then I reset my laptop, and it fixed that also.
I also forgot to mention that I was getting a reset about every 5 seconds or so, and then I reset my laptop, and it fixed that also.
Last edited by boostinsteve; 08-05-2007 at 08:52 PM.
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