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.
Resources for the Repair and Maintenance of your 1990 Mercury Cougar
1990 Mercury Cougar
1990 Mercury Cougar Problems
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.
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.
If you experience difficulty starting the engine when cold, stalling at idle, or hesitations during acceleration, it may be the idle air bypass valve. This valve helps the vehicle idle steady when the accelerator pedal is not pressed.
1990 Mercury Cougar Recalls (Recent)
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.Learn more »
Summary: BATTERY TO STARTER CABLES ARE LONGER THAN SPECIFIED; EXCESSIVE CABLE LENGTH COULD CONTACT ENGINE DAMPER PULLEY.Learn more »
1990 Mercury Cougar Questions and Answers
MERCOURY COUGAR 1986 IS NOT IN YOUR LIST
where is the thermostat located on this engine
any time the accellorator is not engaged the car dies, like at corners or stop sign. Also on the dash "SSS" is showing. Is it a fuel issue or engine?
window broke out