TrailBeast
AKA Mopars4us on Youtube
Some time back I was driving along down around Phoenix and my car started missing.
I looked at the AFR gauge and it read 19:1 or some such nonsense. (Way lean)
Ok, failing fuel pump so I stopped and picked up another pump in case I had to swap it out somewhere less convenient, but it ran fine on the way home.
A week or so later it did it again, so I swapped in the new pump.
A week or so later it did it again.
It tricked me.
The AFR gauge was showing super lean not because it was lacking fuel, but because there was an intermittent ignition module misfire leaving unburned oxygen in the exhaust.
Brain fart.
I looked at the AFR gauge and it read 19:1 or some such nonsense. (Way lean)
Ok, failing fuel pump so I stopped and picked up another pump in case I had to swap it out somewhere less convenient, but it ran fine on the way home.
A week or so later it did it again, so I swapped in the new pump.
A week or so later it did it again.
It tricked me.
The AFR gauge was showing super lean not because it was lacking fuel, but because there was an intermittent ignition module misfire leaving unburned oxygen in the exhaust.
Brain fart.