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

 

It's wired wrong.
I think 453mV is like floating voltage with nothing connected to it.


-Ted

 

Ok then. How do I connect it properly then.

I connected it the same way the stock system was like. I just used the shielded grey haltech wire to the stock o2 sensor and piggy backed the A/F gauges to it. (Unless the haltech wire is broken at the ECU??)


I removed the A/F gauges and it still reads 4mv.

How can I screw up one wire? Is it connected to the right wire?

Thanks ted for the reply. Still could not find out what is wrong with it today!