Question about 2002 Mercury Sable

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Engine stalls car starts but when you give it gas, it dies out? also runs ruff

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  • 51 Answers

Check for vacuum leaks.

Posted on Nov 18, 2013

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Posted on Jan 02, 2017

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SOURCE: car idles low, stalls after start

Common issue at the shop (i'm a ford technician), here is what I do to correct it.
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 11, 2009

  • 170 Answers

SOURCE: Only runs ruff during park and idle.

Your EGR valve shouldn't open up during idle or the engine will run rough and may even stall. Remove it and clean the plunger and port with a wire brush and some carb cleaner. Test the diaphragm with a vacuum pump. If it doesn't work after cleaning, or the diaphragm is bad, buy a new EGR valve.

Posted on Feb 06, 2009

  • 1201 Answers

SOURCE: car stalls after starting will stay running if

Have the fuel by-pass valve checked
or the idle air control valve checked.

Posted on Oct 23, 2009

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