Question about 2007 Saturn ION-2 Quad Coupe

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Check engine light is on

I have had past problems with my gas cap not staying screwed on. could it be the gas cap.

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  • Joe Simiriglio
    Joe Simiriglio Jan 11, 2013

    I replaced the defective gas cap with a new gascap for $15.00 and the engine light went out 10 min later and never came back on.

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Stop by an Auto Zone they will hook up to it for free and tell you the code that is causing the C.E.L. but yes a loose gas cap could cause a CEL to come on.

Posted on Jan 09, 2013

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Posted on Jan 02, 2017

joecoolvette
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SOURCE: 2006 Saturn Vue Check Engine Light

Disconnect the battery wait 10 minutes, then reconnect it.

Posted on Jul 12, 2009

  • 1114 Answers

SOURCE: 2007 Saturn Ion Check Engine Light Gas Cap Problem

Take the car back to your Mechanic and have the mechanic reset your system. Some may advise you to disconnect the battery, and that will reset your computer. This may cause significant problems with your car's computer,radio, alarm. Take the car to the mechanic.

Posted on Aug 17, 2009

  • 7353 Answers

SOURCE: 2006 Saturn Relay Check Engine Light

PO455 is a large evaporative fuel leak. A bad fuel cap is ONE of the things that COULD be the problem. Fuel system cleaning only lightened your wallet. Reading your post is confusing. Did all this start AFTER the Valvoline Wallet Flushing? If so , they left something loose or disconnected. I would find a qualified repair shop to fix the problem, and if it has anything to do with what Valvoline did, make them pay the bill.

Posted on Nov 12, 2009

  • 13 Answers

SOURCE: My check engine light comes

a faulty gas cap could cause an engine code to come on with-out and engine problems if you have to do emission tests or smog tests where you live the one thing there to check it that the gas cap is operating properly. but it could also be a sensor when the engine light comes on the car operates in what is called open loop mode the engine runs in preset peramiters set in the ECM it also runs in this mode til the vehicle is at operating temperator so even if the vehicle seems to be running ok the engine light isn't something that sould go unchecked

Posted on Sep 11, 2010

duane_wong
  • 6826 Answers

SOURCE: Check engine light on, Replaced Gas cap, and Air

After replacing the gas cap and filter, one may want to read the codes and then clear them using a scanner. Since the vehicle is so new, it may require a certain update, though, so the dealer may be the best place to go.

Good luck on this repair.

Posted on Oct 12, 2010

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