Failure to acknowledge a computer system reset with a wiper sweep is indicative of a PCM problem... Or the connections to the PCM module! It is a lot cheaper to make sure the problem is not connection related. One thing you could do is, with the battery disconnected, remove the connector(s) from the PCM module and inspect them for any trace of corrosion or moisture. If any is found, clean it up the best you can. Then lightly spray the connector(s) with some electrical contact cleaner (NOT battery terminal spray!) And then reseat the conector(s) a few times. Also, you should verify that there is no ground interruption problem to the chassis or the engine! One thing that I personally have experienced on Chrysler products is, bad connections developing at the (usually multicable) battery terminals themselves! One easy test for that is, with the engine first cold, then later, warm, Turn on the headlights on high beam, and, while watching the headlight brilliance, mechanically move the battery cables around aggressively, all the while, watching for any change in brilliance or flickering of the headlights. If any change in brilliance is noticed, either replace the terminal involved or replace the entire cable. Has the vehicle been in any accidents or floods? PCM modules would not likely be OK when cold and then bad when hot... But anything is possible! Also IF you replace the PCM module, you will probably have to have it "flashed" with the VIN (vehicle identification number) to make it fully operational. If you don't, the odometer will likely not work at all, but most of the gauges will still work (unless they are digital readout). Good luck!
Friday, June 3rd, 2011 AT 4:23 PM