Check engine light

Asked by Nov 14, 2017 at 04:17 PM about the 2003 Mercury Grand Marquis

Question type: Maintenance & Repair

I hav had my 03 grand Marquis about 5 yrs
And every year when it gets cold my check engine
light comes on, dont make sense to me, I have
coolant in it, I don't run the heat I need a blower
motor.  But every winter without fail it comes on.
Summer time no problems, and I do regular
maintenance.

2 Answers

139,055

Have you ever had the trouble codes read to know what the light is warning of?

2 people found this helpful.
84,365

Sounds like the cold weather is making a bad connection at one of the sensors. Do as F O R said and get the trouble code. Your local auto parts store will scan the computer for free. That'll tell you what sensor it is. HTH. - Jim

Your Answer:

Mercury Grand Marquis Experts

  • #1
    Tracy Hooks
    Reputation
    6,310
  • #2
    Js08016
    Reputation
    2,310
  • #3
    kbro
    Reputation
    2,280
View All

Related Models For Sale

Used Lincoln Town Car
11 listings starting at $6,995
Used Chevrolet Impala
18 Great Deals out of 917 listings starting at $2,694
Used Ford F-150
128 Great Deals out of 12,407 listings starting at $2,795
Used Ford Mustang
41 Great Deals out of 1,544 listings starting at $2,400
Used Lincoln Continental
39 listings starting at $42,998
Used Toyota Camry
34 Great Deals out of 1,922 listings starting at $2,000
Used Chevrolet Tahoe
10 Great Deals out of 988 listings starting at $4,999
Used Ford Taurus
10 Great Deals out of 314 listings starting at $3,995
Used Honda Accord
28 Great Deals out of 1,769 listings starting at $1,800

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.