Check engine light

Asked by Dcstuart Oct 23, 2017 at 07:32 PM about the 2005 Mercury Grand Marquis GS

Question type: Maintenance & Repair

I have 2005 mercury Marquis if my car is at idle for
any length of time the check engine light comes on.
After a few days it will go away. I did ck gas cap
earlier. Any ideas?

7 Answers


Get the code read and start there. Could be anything.

4 people found this helpful.

Take it to any O'Reilly Auto Parts or Auto Zone and let it idle in the parking lot so that it comes on. They will run a code scan for you for free. That will give you an exact answer.

5 people found this helpful.

I put new parts alot noticed my ignition is warring dont ding always when keys in openin door can this loose warn ignition cause ck engi e.lite to pop on off etc. I did get a code 632

I have a obd1 thats givin me the run around


I have a problem on my 2005 grand marquis Ls ultimate edition when we r warm the car up in idle hit wants to shut off but only once in a while it will shut off in idle but when we turn the wheel all the waters the left or right it will die out and that's the only time my check engine comes on is when the car dies out I put Lucas in the tank and only did a regular tuneup since then it got worser


Did u figure what urs was

1 people found this helpful.

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