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Resources for the Repair and Maintenance of your 1991 Mercury Cougar

1991 Mercury Cougar

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1991 Mercury Cougar Problems

Electrical & Lights -- Verified

The battery light may illuminate on the instrument panel because the alternator wire harness connector is damaged. A new connector kit is available and should be installed to correct this concern.

Engine -- Verified

White smoke coming from the exhaust could indicate that a head gasket has blown or there is a cracked cylinder head. Our technicians tell us that removal and inspection of the cylinder heads will be required to confirm a crack is present.

Suspension & Steering -- Verified

While steering, if you hear a clunk or a rattle, or if you experience premature tire wear, this could indicate the inner tie rod ends are loose or worn and will require replacement.

Engine -- Verified

The intake and valve cover gaskets may leak oil.

Electrical & Lights -- Verified

For the 2.3L 4 Cylinder and 5.0L V8 engine, the electrical ignition switch poses a fire hazard. An updated switch is available.

1991 Mercury Cougar Recalls (Recent)

Body, Interior & Misc., May 24, 1991

Summary: THE NUTS WHICH HOLD WINDSHIELD WIPER MOTOR TO THE WIPER MODULE MAY NOT HAVE BEEN SUFFICIENTLY TIGHTENED AND MAY LOOSEN OR COME OFF. THIS CAUSES CHANGED WIPER PATTERNS, OR THE WIPERS MAY JAM IF TWO OF THE THREE NUTS COME OFF.

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Drive Train, July 22, 1991

Summary: THE PARK ROD ASSEMBLY CONTAINS A PARK CAM WITH INADEQUATE SURFACE HARDNESS, WHICH COULD LEAD TO PARK DISENGAGEMENT OR NO PARK ENGAGEMENT WHEN THE LEVER IS PLACED IN PARK.

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Electrical & Lights, June 7, 1996

Summary: THE IGNITION SWITCH COULD EXPERIENCE AN INTERNAL SHORT CIRCUIT.

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1991 Mercury Cougar Questions and Answers

cfish0031, 1991 Mercury Cougar, 3.8L V6, Bedford, IN

I am having a problem with when my car is stopped it still tries to accelerate. I kept my foot on the brake the whole time while the car still rev'd up. Could this be that the car thinks its o...

Toylocker, 1991 Mercury Cougar, 3.8L V6, Grand Prairie, TX

Temp gage does not work, Where is the sending unit and connection?

Toylocker, 1991 Mercury Cougar, 3.8L V6, Grand Prairie, TX

Slightly baffled. How do you adjust the headlight aim?

Toylocker, 1991 Mercury Cougar, 3.8L V6, Grand Prairie, TX

OD slips after 2500 rpm. can the bands be adjusted & how? Thanks

Nate27, 1991 Mercury Cougar, Colorado Springs, CO

I have an XR7 and the other day my anti-lock and brake warning lights came on on the cluster, the brakes still somewhat work yet they are manual now. I have no electric assist in them. Could this b...

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1991 Mercury Cougar Reviews

My dad was the second owner. I bought it from him at about 85,000 miles. The doors are long and heavy and after many years, they will sag. I have shimmed mine up and everything is fine. Brakes are good, but mine only has drums on back. It has the 3.8L and I replaced the head gasket twice by 150,000. Ford's 3.8L had a head gasket problem no matter what they were in. I finally replaced it with a 98 Mustang 3.8L. After 97 they had redesigned the decks and they don't have the problems anymore. It is bulletproof. It has over 250,000 with the original transmission and 7.5 rearend. Put an oil cooler on any Ford with an AOD. It used to slip out of overdrive when it got hot or when I drove it hard (all the time). Not a problem anymore with an oil cooler. It still has the original exhaust pipes. I put new catalytics on it several years ago. AC was originally R-12. Works fine with R-134a. Just flush it, evacuate and fill it. Heater cores are problems and very difficult to change. It is buried under the dash. I have been putting off doing it again. Get one from Ford or somewhere really good. Not going cheap this time. The suspension and steering is a lot of what set the T-birds and Cougars apart from every other American car in their day. Front and rear independent suspension with unequal length control arms (or short-long as they call it these days). It is the reason I love these cars.

This is my second Cougar (my daughter totalled my first), and I will never drive anything else. With all the talk of ergonomic design in the new cars (upwards of $30,000), they could all take a design lesson from the cabin of the amazing Cougar!!! Looking forward to someday owning the 30th Anniversary Edition.

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