Question about 2003 Jeep Wrangler
Wife had jeep at work and left headlights on which drained battery, called AAA for jump and jeep started up. let idle for short time shut off then would not re-start. AAA guy jumped it again and she left it run which did charge the battery. Somewhere in the midst of this all power to the gauges including the odometer was lost. also now jeep idles extremely low and stalls frequently. All fuses check good and the pins on the gauge cluster are fine. turn signals work as does radio and wipers and all external lights.
As far as the guage issue it is most likely a problem with the body control module, have a trouble code test run on the BCM to determine the issue, the stalling is caused by the loss of the idle strategy learning when the battery went dead, the best thing to do is the following procedure I use to clear this issue.
Here is the most common cause of surges and stalls (or very low idle) near or at idle, it is the idle speed control air-bypass valve and throttle valve, they get full of gunk over the miles and cause idle issues (stalls) 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.
Posted on Nov 28, 2008
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