Bobby 10/25/2010could be a bad on board computer if the power for those circuits are through the computer, or possible there grounds are.
You could also be looking at the possibility these are unrelated and seperate pwroblems and it is just coincidence.
Start testing checking for power to the main fuse panel, check relays check for any burnt wires or melted. Does the car crank?
CVO 10/26/2010My 92 dodge Caravan V6 3.0 had that same problem about 2 months ago. I connected my scanner and a link error communicating displayed.The car cranks, but the dashboard lights went up for a few seconds and all's lights disappeared ( no sparks, no smelling gas from the exhaust pipes ). Master HouseCallAuto asked me to check the voltages went in to the computer harness ( which all were present ) and cycled the ignition switch to see if the Automatic ShutDown (ASD) relay was working ( apparently it was not). I replaced the powertrain control module for $180.00 dollars (PCM) and it runs like champ now ( no more engine stalled at the traffic or stop signs, the speedometer behavior was long gone).A Million Thanks to Master HouseCallAuto. Hope this helps and be safe.
simoneau2007 3/7/2011i have a 94 jeep grand cherokee and i don't get pwer to the ignition coil and the feul pump. I get down to it its not the fuel pump when i hear the relay clicking i turn the key and start the jeep and its runs great but when u shut it off and let it sit for 3 mins you have to do the same thing wait until you hear the relay go off again i need help to find out what is wrong. what i read on online about pcm i don't thing its that either but that be the last thing im going for that cost $$$$