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1990 Mercury Cougar Questions

Get answers to questions about your 1990 Mercury Cougar at RepairPal. Find solutions, diagnose problems and get back on the road.

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36
questions

have replaced the fuel pump relay , no change can hear pump ,has pressure at the fuel rail

89 Mercury Cougar, 3.8 V6 (2000,000 miles)needs tune-up(rotor) and replace water pump.

My abs pump will not turn on ,I have rigged a switch to turn it on when i need pressure,I have replaced the abs module 3 times with salvaged parts,also i have replaced master cylinder,sensors, accummalator,abs pump and motor. with salvaged parts.can anyone help?

i have an 88 mercury cougar that wont hold a idle. it idles up then down then up then down and dies......have replaced fuel filter, throttle sensor and a temp sensor what else may be causing the problem? anyone with ideas, pls help!!
Thank you

I have a 1990 Cougar with 115,000 miles. the windshield wipers stop working. You can hear the wiper motor when you turn them on but they do not move. All suggestion welcome.

AT FIRST THE AIR WAS COMING OUT OF THE PROPER VENTS! WHEN USING THE AC THE AIR WOULD START TO COME OUT OF THE DEFROST VENT AND THEN COME OUT THE AC VENTS! THE HEAT DOES THE SAME THING AND COMES OUT THE DEFROST VENT! EVERYTHING NOW COMES OUT OF THE DEFROST VENT! PLEASE HELP! THANKS! JOHN

do not know diagnostic code, how often, just bought it fromna private party and the digital speedmoeter does not work
need to get it fixed but do not know where to start.

when driving it acts like its missfiring

Had accelerator stick open for 3 seconds with no load Now have engine knock when accelerating Will still run with power and does get louder as engine warms up. 1969 Cougar Convertable with 390CI

Hi, my car is a 1988 Mercury Cougar. It has a V8 engine in it and a 5.0 liter. My fuel pump is always on, we thought it was a relay problem and found out it wasn't the relay problem. So every night before we go to bed we have to disconnect the battery. Does anyone know what it could be?

wont start when i press brake down

when i put my foot on brake to start it wont do anything its not the battery is there a switch or something? the manual says to put foot on brake to start

In the Hayne's repair manual for this car it says that the lower ball joints aren't replacable and that the entire lower arm will need to be replaced! I went to 2 different auto parts stores and neither of them have the L.A. assembly BUT they both sell just the ball joints!! Am I about to waste my money by buying them??

engin will turn over but will not start

engine will turn over but will not start, not firing