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A/F Gauge=Blinky Blinky thing that does nothing.
Sell it and get a EGT gauge or something.
If you are going to use it anyway, make sure you have a good ground, I know you have already have been told this but check again. Next, how did you tap into the O2 sensor wire on the ECU? You problem could lie there. The pin on the ECU itself could be pulling out and giving you screwed up readings.
First get a volt meter and check how many volts your O2 sensor is giving out. It may be dead and not doing shit, hence the check engine light you have been getting sometimes right?
If you start your car and after like 4 or 5 minutes when your car warm up the check engine light comes on there is a good chance your O2 sensor is either bad or getting bad. The O2 sensor doesn not even start working until it hits 600 degrees.
If none of this applys then fuck it, there really isn't much to them things and the way they work or don't work, however you want to put it.
CRAIG
CRAIG
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