99 Durango PCM problems
#11
#12
Ok, thanks. I will be thuroughly looking them over. The tech at the stealership, having done no diagnosis whatsoever, is convinced my overhead console is causing my problem. I think thats bs and they just want to throw parts at it, my overhead console is about the only thing working, apart from things like my stereo, door locks, lights, etc. Got my vehicle out of that shop this morning, it wouldn't start outside(-20 degrees) and would only start in the warm shop so they kept it inside over night so we could drive it home. It got back and after idling in the driveway for 5 minutes it died.
Last edited by TNtech; 12-12-2013 at 10:09 AM.
#13
I haven't been able to do any diagnosis yet because I'm still at school until tuesday and my D is back home. I did have my dad unplug the tps and map so those have been ruled out. When it was at the stealership it would only start in the warm shop but now that it's back in our shop it won't. I guess that makes daignosis easier, I won't be doing it in the cold. But I found something interesting yesterday on Alldata. About a month ago I got an evap code P0443 and couldn't for the life of me figure out why because I have voltage to my purge solenoid and no more than .3 ohms resistance in the circuit, and my battery died two nights in a row. Then I found TSB 08-07-00, which states that when the heater/ac switch is in the off position(which mine was when I died) there is a backfeed of voltage through the blower motor relay into the pcm while the engine is off. Now my question is could this backfeed of voltage cause damage to the pcm? I think it's suspicious because two weeks after that my pcm goes out.
#14
Well I did some testing on the D yesterday and I unplugged the crankshaft position sensor and I didn't get the no bus and my gauges worked and u plugged the sensor back in and had the no bus again so I installed a new crank sensor, which was a b***h. Drove it into town and everything was fine until I tried to restart it. It wouldn't start, so I towed it back home and tested for 5v reference before I went to bed. I had 5v on both the 5v wire and ground wire at both TPS and MAP sensors. Internal short in the PCM?
#15
#16
#19