What can be the cause for engine coolant leakage on my 1987 Mercury Grand Marquis ?

135

Asked by May 04, 2014 at 05:33 AM about the 1987 Mercury Grand Marquis

Question type: Maintenance & Repair

My '87 Mercury Grand Marquis is loosing some engine coolant. There are 2 water spots on the floor - one in the front located near the water pump, the other behnd the engine. Can' t locate where the coolant is coming from. If it is the water pump - can it als be the cause for the rear spot ?

4 Answers

12,355

It could be. The water could be running down under the pan before dripping off. I would suspect the water pump. When the seal goes bad in the pump the water blows out, often this is the issue with cooling systems.

2 of 2 people found this helpful.
Best Answer Mark helpful
135

What if it's not the water pump ? How big is the risk that the coolant leakage is being caused by a bad cylinder head gasket ? Today I added some contrast agent. Maybe this will help to find the exit point.

12,355

A bad head gasket is always a possibility, especially seeing that it's an 87. For your sake I hope it's not, but a good inspection will be necessary to pinpoint where the coolant is coming out. Also, I would recommend checking your oil thoroughly to make sure coolant isn't mixing with it as it would be a possibility with a faulty head gasket. This would obviously cause larger problems and I would park it until you can get the gasket(s) replaced.

135

It seems to be the water pump gasket. The fluorescent agent I added to the cooling system days ago helped to locate where the coolant is coming out. Indeed, it is running down the engine block in the front area, then running along the oil pan gasket to the back and dripping off near the torque converter cover. So both spots have the same cause ! Thanks Mark, your answer was very helpful.

Your Answer

Grand Marquis

Looking for a Used Grand Marquis in your area?

CarGurus has 1,592 nationwide Grand Marquis listings starting at $1,000.

ZIP:

Mercury Grand Marquis Experts

  • #1
    Tracy Hooks
    Reputation
    5,880
  • #2
    kbro
    Reputation
    2,190
  • #3
    Js08016
    Reputation
    1,940
View All

Related Models For Sale

Used Lincoln Town Car
23 Great Deals out of 1,626 listings starting at $2,450
Used Ford Crown Victoria
5 Great Deals out of 934 listings starting at $1,496
Used Ford F-150
3,309 Great Deals out of 227,158 listings starting at $1,250
Used Dodge Charger
446 Great Deals out of 35,169 listings starting at $2,000
Used Ford Mustang
454 Great Deals out of 42,978 listings starting at $1,488
Used Honda Accord
900 Great Deals out of 79,954 listings starting at $1,295
Used Cadillac DeVille
1,443 listings starting at $2,695
Used Toyota Camry
1,119 Great Deals out of 77,518 listings starting at $1,400
Used Chevrolet Caprice
4 Great Deals out of 157 listings starting at $7,495

Used Cars For Sale

2011 Mercury Grand Marquis For Sale
14 listings starting at $5,835
2010 Mercury Grand Marquis For Sale
3 Great Deals out of 81 listings starting at $2,990
2009 Mercury Grand Marquis For Sale
5 Great Deals out of 80 listings starting at $3,999
2008 Mercury Grand Marquis For Sale
8 Great Deals out of 143 listings starting at $1,000
2007 Mercury Grand Marquis For Sale
6 Great Deals out of 125 listings starting at $1,995

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.