Question about 2003 Pontiac Grand Am

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Why does service engine light flash - 2003 Pontiac Grand Am

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One of many reasons, usually doing with the emission system. Most auto parts stores have a testing machine , that they will use for free, to decode the problem for you.

Posted on May 12, 2014

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Posted on Jan 02, 2017

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Check engine light flashing check engine soon smell of gas and not running smouth


Check engine light flashing means there is a bad misfire , it flashes to tell you your damaging your catalytic converter . You need to have it check , you don't won't to have to replace the catalytic converter . Can cost up to $1,000.00 . Flashing Check Engine Light CarMD

Feb 03, 2016 | 2004 Cadillac Deville

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My trailblazer was ibeling then it died when I started it up it was missing and service engine soon light flashes on an off none stop


Your vehicle has a bad misfire that could damage the catalytic converter. That's why the service engine soon light flashes . If you drive it like that it will damage the cat. Have towed to the repair shop . Flashing Check Engine Light CarMD

Nov 26, 2015 | Cars & Trucks

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Flashing service engine soon light flashes then shut off


Check engine lights have been used for over 30 years and yet most people do not know what they are used for.
The check engine light tells the driver a problem exists with the performance or emissions of the engine. Not the actual engine itself.
Anytime something happens that could affect emissions or performance, the light comes on and a trouble code is set in the computer memory. The driver then has to have the computer scanned for those codes to know what component to have checked.

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2002 cadillac deville service engine light flashing at 20 mph


Did you replace those parts based on the trouble code? Or are you just throwing parts at it? What are the codes?

http://ricksfreeautorepairadvice.com/flashing-check-engine-light-is-serious/

Aug 30, 2017 | 2002 Cadillac Deville

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Check engine light stays on, also service light is still on


well when you see service light flashing time to take vechicle to dealership they need to code scan see what causing check engine light and service light to flash on.

Nov 16, 2011 | 1999 Volvo S70

2 Answers

Service engine soon light is flashing


Have the car scanned for the code's origin. This could mean that the engine will not work as well as it should, and could cause driveability isues.

A constant service engine soon light means that a hard code exists. A flashing light means that an intermittent code exists, but it could become a hard code very quickly.

Jul 08, 2010 | 2000 Buick LeSabre

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Toyota pick up 91 4wd engine service light codes


Unfortunatly ther is no generic code when your engine light is on you have to go to your local garage and have the truck scanned to get the code
and if your engine light is flashing you will damage your catalyct converter if the problem is not fixed soon

Mar 08, 2010 | Toyota Pickup Cars & Trucks

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The service engine light is flashing, loss of power through rpm range, and has no DTC codes, flashes untill I come to a stop.


If the Service engine light is flashing, that indicates the presence of a missfire condition, also know as pinging, or preignition. If the light is flashing you could potentially be harming the engine even further by driving it any distance at all!

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1 Answer

Service Engine Light on and sometimes flashing


take it to a service shop if the light flashes there is a real problem

Mar 02, 2009 | 2000 Pontiac Grand Am GT

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