Question Hi Roland, it's me again I am the guy who had the misfire problem I wrote to you about on 3/24/06. The good news is that problem is repaired. Believe it or not it was a cracked fly wheel. what happened was it was completely broken around the crankshaft bolts, but instead of breaking completely it turned slightly and wedged itself back together, throwing the timeing off causing the misfire but not throwing a code. Now, next problem: For no reason the interior lights will come on all by themselves also the electric trunk release will open by itself it only does this while it is parked. Electrical is something I am not real knowlegable about so I am counting on you to help me out. Thank You, Bruce
AnswerHi Bruce,
Thanks for the update on the misfire problem. I thought it might be something with the cranksensor but instead it was the flywheel(flexplate) that the sensor interacts with, which makes sense now.
The electrical issue is an interesting one. Sometimes I think Chrysler likes to make things too fancy. The trunk release solenoid and the interior lights can be controlled by two separate systems: the remove keyless entry (do you have that feature?) and by the door ajar switches and the trunk release switch in the glove compartment. If the problem seems to be related to temperature (being parked outside in the sun?) then I would suspect that the remote keyless entry module under the dash pad is getting heated up and falsely turning on the lights and opening the trunk lid. If it is not related to temperature then I would suspect the body computer which is located on the passenger side inner cowl panel has gotten wet and some of the pins may be shorting together spontaneously and unpredicatably.
I have the wiring diagrams for all those systems but the text that describes possible problems doesn't mention this one. Because the lights don't come on when you are moving I suspect it is not related to the door ajar switches which are handled thru the body computer. So I guess I would suspect the keyless entry module until proven otherwise. The module is located under the dash panel top cover (just below the windshield) and if you remove that you will find it attached to the structural duct on the passenger side. It has two plugs with 8 pins each colored black and blue. You should be able to find a replacement at a wrecking yard. Let me know what you think of this theory and any other questions you might have.
Roland
P.S. Here is the description of how to find the body computer: It is mounted diagonally on the side wall (cowl) fairly high off the floor, not behind or under the glove box. Once you get the trim panel off you may be able to feel it through the liner:
"Remove right end cap from the dash
Remove right cowl side trim panel and pull carpeting back exposing dash liner
Cut dash liner along perforated lines and pull back dash liner.
Remove mounting screw (top edge of module) through oblong hole at right hand end of knee bolster.
Remove push-pin fastener at lower rear corner leg of module from underneath the instrument panel and maneuver module down and out, disconnect the three electrical plugs to remove the module.
Once you have it out, check for any dirt, corrosion, water around all the sockets and the plug pins which might be causing a short circuit.
