Hi everyone! I'm new here and I've came looking for help. Recently I've traded up to a 2000 Durango 4x4 with a 4.7L engine. Long story short I had to wind up replacing the front calipers and the brake pads. When I first got it, it didn't have much of a pedal and still doesn't, it will nearly touch the floor board. Now when I try to stop it it will die on me wnd it has died on me on the middle of traffic. I've read it could be the Idle Air Control valve but I have no idea. Second thing is the speedometer does not work period. In the back of my mind its the speedometer sensor on the transmission but I replaced it and still didn't help. It shoots OBD2 P0500. I used to have a 99 ram 4x4 that had the same problem but it was the one on the rear end and the brake and abs light was on but in the Durango, neither one of them are on. Could it just be a faulty sensor, fuse, or even the cluster? Any bit of help can do alot.

 

I think the sensor on the rear diff is indeed the VSS as well. The ones on the trans kinda fell off in 98.

 

Yeah I would check the sensor in the rear diff anyway. Pull it and make sure it's clean, not covered in metal shavings. Did you have your battery disconnected or did it go dead and leave you having to jumpstart? With mine, it's like the ECM has lost its "memory". Thing will drive fine until it sits for a few weeks (I have a parasitic drain I've been too lazy to look for) then the battery will go dead. Throw it on a trickle charger or jump start it, it doesn't care. It'll die at every stop light if I'm not two-footing it and allowing it to slowly come down to idle. That's for about 20 miles of driving or so before the ECM "relearns" and then it's as good as gold again.