Question about 2000 Saturn Ls 4dr Sedan

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My service light comes on and off periodiclly, and sometimes the car stalls. What could be causing this problem? And how can I resolve?

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This could be a faulty CKP ro CMP as well. you will need to run a diagnostic scan to actually receive the correct trouble codes in this case. the on and off cycle of the light will usually signal a miss in one or two of the cylinders.

I recommend taking this car to a local Auto Zone auto parts store. they will run a scan for free on your car. this scan will direct you to the actually part or issue that is causing your issues.

Posted on Jun 15, 2009


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Wood a bad idle air control valve cause car not to start

No, a bad idle control valve will not cause a "no start" scenario. See below:

"An IAV sometimes may fail, or can become troublesome. This can manifest itself through various problems while driving. Following are a few problems that may be caused by a faulty IAV. A rough running engine can be caused by a faulty IAV. If the valve begins to stick over time, or fails to respond to inputs from the car's computer, it may not properly adjust for engine loads and operating temperatures. If you notice that your car seems to run rough when it starts up, or once it warms up, it may be a good idea to check the IAV.
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all stalls end in CEL check engine light on. that is normal
but CEL glow. when engine running , means you had a failure, and it stored DTC error codes, so scan it.
lots of causes. huge list.
get a tune up , tops list.

SCAN it to be sure all sensors work. running.
all fuses in car good.
by stalls , i assume the engine stalls and engine RPM is 0 RPM.
the stall cause the whole dash to light up, all the warning lamps come
on (self test) oil , charge , CEL. come on.
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i will tell you the 3 ways.
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bad spark , spark died.?
bad fueling, lost all fueling (starves and stalls or floods and misfires horribly and stalls (black spark plug tips are big time clue)

if non eof the rings a bell.?
get the car serviced.

this car is newer nicer car, you (we) can scan and drive and log data.
allowing faster easy diagnosis.

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Check the help link mentioned below to troubleshoot the problem: ------

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