Hmmmmm. Just took the car around the block twice (20 minutes / 26 km) with the O2 sensor disconnected. No red light, no LHM, just drove exactly as it has for ages. It was prewarmed too, I had it idling for 1/2 hr with the sensor unplugged before reading ratter's post, hoping to get it into closed loop and throw an error.
Not sure whether I drove it long enough to self-test, but surely going into closed loop and getting no O2 reading would cause a problem?
Have had issues of spontaneous stalling / immobilisation over the last 6-8 mths or so with no DTC's to give any clue. The bloke I get to scan it thinks there may be some dodgy wiring (he hates afermarket LPG installs, J3 chips etc). Sounds like the PCM may be getting a voltage on the O2 input that's coming from somewhere else via a dodgy joint or worn insulation?
This might give a sparky a starting point. I'd hate to take it to a sparky and have to say "check the entire engine bay and dashboard looms and all the sensors". Would cost a bit unless he was lucky.
__________________
The Frankenfalcon... AU1.5 Wagon, BA brakes, AU2 booster, BA2 XR6T engine, stock from airbox to turbo, 8psi/98 octane tune 240RWKW, BF XR6T cat, quiet 3" zorst, Pex BSO660 & BSO439 mufflers, 84 db, built BTR box, 3.08 LSD, Emer SVI LPG, AU1 XR8 alloys, Momo wheel, JVC KDR746BT head unit, Aerpro steering wheel control wiring.
Sleeper, anyone?
|