Hi folks, I've got a few things going on in my 2005 Rainier 4.2 AWD 110,000mi and I am wondering if they are related due to their timing. Long post here - sorry.
For a few months I've had an occasional CEL (not flashing) for a misfire on cylinder 5, the car isn't riding noticeably rough, but if I'm outside of the car I can somewhat here that something is wrong. Turning it off and back on seems to fix it and if I clear the code the light stays off for a few weeks. I also occasionally lose cruise control (related?) and again if I stop the car and turn it back on it works again. This has been happening sporadically for a few months too. Annoying but not majorly problematic.
Then, this weekend after getting my emissions tested (which I passed) I was turning into my driveway and the AWD system engaged and stayed locked on. At the same time the car ran really rough and the P0305 code came back on. I turned the car off in the street and sat for a second before turning it back on. The engine ran okay, but the AWD was still engaged.
After some forum searches I figured the encoder motor on the transfer case went. Pulled mine off and fuse 8 and sure enough AWD disengaged. Installed a new one the next day and AWD stayed disengaged (no real way to test if it will engage like it should). I did disconnect the battery for 30min after the swap.
However now when I start the car the service AWD light comes on. If I drive a decent distance and then turn the car off and on the light goes off, but if I leave it parked for a while and start it the light is back on. Additionally, I am losing my cruise control much more frequently now - about 50% of the time, it always starts working again if I stop and restart the car.
My leading thought right now is a possible bad ground somewhere, but I really am at a loss. Any insight or help would be greatly appreciated.
Thanks
For a few months I've had an occasional CEL (not flashing) for a misfire on cylinder 5, the car isn't riding noticeably rough, but if I'm outside of the car I can somewhat here that something is wrong. Turning it off and back on seems to fix it and if I clear the code the light stays off for a few weeks. I also occasionally lose cruise control (related?) and again if I stop the car and turn it back on it works again. This has been happening sporadically for a few months too. Annoying but not majorly problematic.
Then, this weekend after getting my emissions tested (which I passed) I was turning into my driveway and the AWD system engaged and stayed locked on. At the same time the car ran really rough and the P0305 code came back on. I turned the car off in the street and sat for a second before turning it back on. The engine ran okay, but the AWD was still engaged.
After some forum searches I figured the encoder motor on the transfer case went. Pulled mine off and fuse 8 and sure enough AWD disengaged. Installed a new one the next day and AWD stayed disengaged (no real way to test if it will engage like it should). I did disconnect the battery for 30min after the swap.
However now when I start the car the service AWD light comes on. If I drive a decent distance and then turn the car off and on the light goes off, but if I leave it parked for a while and start it the light is back on. Additionally, I am losing my cruise control much more frequently now - about 50% of the time, it always starts working again if I stop and restart the car.
My leading thought right now is a possible bad ground somewhere, but I really am at a loss. Any insight or help would be greatly appreciated.
Thanks