Chrysler Repair: Chrysler LHS, 1996 3.5L, voltage regulator circuit, chrysler lhs


Question
Keeps burning up plug wires at the coil pack.  Metal connections in plug completely melted.  Also, accumulates corrosion on negative battery terminal quite rapidly.  Requires cleaning every other day.  When new wires are installed car runs well for an average of 1 month, then drops cylinders rapidly as connections are destroyed.

Answer
Hi Roger,
I just saw your question in the "pool". I would wonder if the voltage regulator circuit might be out of whack. You can probably get the answer by reading out the engine controller for fault codes. Use the ignition switch to get a fault code from the computer:
"on-off-on-off-on and leave "on", doing that in an elapsed time of 5 seconds or less. Then watch the check engine light which remains "on" to begin to flash, pause, flash, etc. Count the number of flashes before each pause. Then repeat to be sure of an accurate count. Then group the numbers in pairs in the order of appearance to form the two digit fault code numbers. Then go to www.allpar.com/fix/codes.html for a translation or write back with the numbers and I'll go from there. The last number is always 55 because that means "end of readout". Alternatively check the voltage across the battery when the engine is warmed and rev it a bit.
Roland