Question about Chrysler Concorde
1999 300M 150,000 Miles
Car dies when coming off acceleration or at idle in traffic or at a stop. I can watch the Tach go to 0 RPM, some times it will restart immediately other times it is hard to start, so far I have always been able to re-start it and Drive on. Does anybody have verified fix for this issue, I have seen posts saying can and crank sensor, throttle body, EGR, and many more ideas... Do not really want to just start replacing parts with the hope that I eventually get a fix. Help...
Posted on Oct 14, 2010
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Posted on Jan 02, 2017
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Here are some of the causes of surges, stalls at stops, slow idle speed, erratic idle speed, rough idle and engine hesitation (and other problems), it is in most cases the idle speed control air-bypass valve and or throttle valve and upper intake, these area's get full of gunk and combustion residue over the miles and cause idle issues (stalls, low idle) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.
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