88 grand marquis overheating and leaking water

Asked by Mar 01, 2017 at 06:33 PM about the 1988 Mercury Grand Marquis

Question type: Maintenance & Repair

My 88 mercury grand marquis is overheating and
leaking water from the passenger side under the
car around the front passenger side door. What is
the problem I can't figure this out?  Please help

10 Answers

20,290

Sounds like the heater core is bad.

75,515

Yes I agree, and running low on coolant.

I appreciate the help. But out of curiosity how did you come up with that answer?

75,515

The location of the leak. But we should ask do you smell anti freeze inside the vehicle?

20,915

Also check heater core hoses, they old enough to be bad.

20,290

The heater core is located under the dash on the passengers side so if it starts to leak anti freeze will go onto passenger side floor.

20,290

And that is a good question from Rowefast do you smell anti freeze or is it just plain water that you see on passenger side floor ?

No antifreeze in the car period just water. I don't put antifreeze in the car

75,515

You should run a 50/50 mix. It raises the boiling point of the coolant and cools the motor much better. Just check your heater hoses running to the heater core, replace the heater core if necessary.

75,515

Plus the anti freeze is a rust prohibitor.

Your Answer

Grand Marquis

Looking for a Used Grand Marquis in your area?

CarGurus has 10 nationwide Grand Marquis listings and the tools to find you a great deal.

Postal Code:

Mercury Grand Marquis Experts

  • #1
    Tracy Hooks
    Reputation
    5,830
  • #2
    kbro
    Reputation
    2,150
  • #3
    Js08016
    Reputation
    1,900
View All

Related Models For Sale

Used Lincoln Town Car
22 listings starting at $1,850
Used Dodge Charger
83 Great Deals out of 804 listings starting at $2,000
Used Ford F-150
583 Great Deals out of 10,750 listings starting at $3,300
Used Ford Mustang
11 Great Deals out of 1,082 listings starting at $3,000
Used Chevrolet Camaro
863 listings starting at $12,000
Used Honda Accord
93 Great Deals out of 1,040 listings starting at $750

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.