Question about 2002 Buick LeSabre

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2002 Regal - Engine kills right after starting cold.

Everytime we first start our 3.8 engine, it kills, then it usually restarts fine and runs good. If you catch it by pushing down the throttle right when you start it, it may continue to running without killing.

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  • jesse777 May 11, 2010

    Hi,



    Has your fuel pressure regulator ever been replaced, perhaps under recall?



    Try holding the accelerator to the floor and starting the engine? Does it start more quickly and continue to run?



    Does the check engine light remain on at anytime while the engine is running?

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  • Buick Master
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There are 3 things that cause this, 1st and most common is a dirty idle speed control valve, 2nd is carbon on the back of the intake valves, last but not least is the wrong octane of fuel, if it requires 89 Octane and 91 or 92 is used the engine will stall code.

To clean the dirty idle control valve follow this procedure:
Here is the most common cause of surges and stalls, 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 22, 2008

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Posted on Jan 02, 2017

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