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2007 hummer h3......my hummer will die sometimes when slowing down & noticed that my lights were dimming & the rpms will move fast between 0 & 1 like it is trying to down shift then it will die. No lights come on the dash when it dies or any kind of warning to let me know it has died because u don't hear it die. Any ideas of what the problem might be?

Posted by Anonymous on

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6ya6ya
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Posted on Jan 02, 2017

emissionwiz
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SOURCE: 2003 Ford Taurus wants to die when coming to a stop

TRY THIS AND LET ME KNOW IF IT CORRECTS YOUR PROBLEM
Here is the most common cause of surges and stalls at stops and low erratic idle speed and rough idle, it is the idle speed control air-bypass valve and throttle valve (IAC for short), they get full of gunk 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

Posted on Mar 17, 2009

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