Chrysler Code 43


Old 08-19-04, 10:25 AM
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Chrysler Code 43

97 Chrysler LHS 3.5 with 102,000 miles, started running rough at idle to days ago and last night final set check engine light . Code stored was 43, which according to hayes book it means Peak primary coil current not achieved with max dwell time, on site it list the following
for code 43:
43 Peak primary coil current not achieved with max dwell time
43 Cylinder misfire
43 Problem in power module to logic module interface

I went ahead replaced the plugs and plug wires, been about 3-4 years,
plugs where worn some, but where firing and not fouled.
Rough idle still coming and going, but has not reset code yet. Any ideas
on what \ how to check next. Coil pack little to expense to just replace to see if solves the problem.

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Old 08-19-04, 11:43 AM
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get the code...

that's set in the PCM memory. 43 is general reference that means mostly nothing...only that there is an ignition related fault and that can mean many things. daimler-chrysler's diagnostic and on board information available are VERY sophisticated and pretty well written.

in short...there are multiple codes associated with ignition failures that have diagnostic routines written for them and designed to lead a competent technician to the likely cause of the problem. have it checked at autozone, if you wish, and post the exact number back here and someone will help you understand what's going on. for example...P0300 (random cylinder misfire)

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