My Haltech and autometer A/F show a constant 4mv output. I check in the haltech and there is no settings to configure the O2 sensor.

Its basically a stock O2 sensor one wire connected to the grey haltech sheilded wire on the 02 wire harness. The only other difference is I have the autometer/ and apexy TT piggy backing the stock sensor.

Any suggestions.

Also my Fuel pressure gauge during priming shows 45psi. Now running it shows nothing. It worked the day before. Do these gauges fail easliy?

Thanks,
Ian