I've been reading that wideband sensors don't like being heated before engine start. I'm trying to solve the cause for my Innovate MTX-L & Bosch LSU 4.9 sensor malfunctioning now twice in 2 months.
Why they have a built in heater doesn't make sense in that case. But nevertheless, I am wondering if there is any better signal wire to indicate engine running than the fuel pump circuit? I'd like the best indicator of the running engine to trigger the relay.
Why they have a built in heater doesn't make sense in that case. But nevertheless, I am wondering if there is any better signal wire to indicate engine running than the fuel pump circuit? I'd like the best indicator of the running engine to trigger the relay.