Recent content by gonzo

Does my TJ have a mass air flow sensor? had problems a few months back with recurring 02 sensor code po155, replaced both upstream sensors, now getting po135 and po155 both upstream sensors again. Noticed the tailpipe has a lot of black on the tip recently like it's running rich. 4.0 automatic...

All the fuses are good and none are missing, checked both fuse panels.

03 Wrangler Sport 4.0 auto. Hard starting engine and missing when running, got PO155 code (02 sensor heater malfunction bank 2 position 1) and cyls 1&4 misfire codes, replaced both upstream 02 sensors and spark plugs and cleared the codes, jeep ran perfect for a couple of days then hard starting...