Question about 1991 Mercury Cougar

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1991 cougar XR7 speedometer off odometer not working

The speedometer on my 1991 cougar XR7, 5.0, is not reading the real speed. It is either reading to low or too high. The odometer is not working at all.It is an electronically controlled speedo mounted next to a tach which is working.

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  • Anonymous Mar 25, 2014

    Speedometer cable or sensor

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Headlight switch. Very common on these cars. The knobb that you pull to the left of the steering wheel is the switch that needs replacing. Make sure that the harness on the back isn't melting. This happens on car with factory fog lights or cars that had aftermarket fogs installed without a relay. Hope this helps.

Posted on Feb 08, 2009

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Can you fix this my headlight blink off and on and i must hold high beam light switch on blinker handle to drive at night

Posted on Dec 17, 2008

  • Watonah Harris Dec 17, 2008

    Headlight only work on my 1989 Mercury Cougar when I pull High beam handle back. And I must hold handle hold time while driving . i change signal light handle switch.But problem still exist.

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1 Answer

My speedometer reads fine up to 38mph, then stops. The odometer works fine, and the cruise works fine. Any ideas on the Speedometer?


didnt specify what vehicle -generic answer -is it digital or mechanical --check speed sensors if digital and the gears/cable connection if mechanical

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Y can't reset the speedometer. Your problem is the electric motor that turns the speedometer needle. I believe yours just pops in and out. But some are soldered. You can get both kinds on line.

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I have a 1995 mercury cougar and my odometer stoped wporing so i got two off wrecked cars and it still will not work can it be the wires to the odometer


If your 95 XR7 odometer stopped working the most common problem is the plastic gears. They get so hot the surface shows bubbles that weaken the gears and eventually cause the gear or gears to break and the odometer stops working. The odometer part of the speedodometer has a small electric motor which drives a 16 tooth cam gear also called carrier gear (POD) which then drives a 20 tooth internediate gear which drives the odometer and trip odometer. These 2 gears need to be replaced. I also have a 95 XR7 and had the same problem and I got the replacement gears and did it myself. If you go to www.odometergears.com they have picture instructions and you can also order your replacement gears.

Jul 11, 2011 | 1995 Mercury Cougar

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Have a 95 cougar XR7 and the odometer stopped working can't get a straight answer to the problem.


defective electronic speedometer, and that is the straight answer from a Ford dealer technicain

May 17, 2010 | 1995 Mercury Cougar

1 Answer

Speedometer works but odometer does not on a 1991 Mercury cougar


its the assenbky itself. look around where you are and 2 ways to tackle this, either find a junk yard a purchase a known good part or someone who rebuilds these components.

Dec 28, 2009 | 1991 Mercury Cougar

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I have a 99 cougar and speedometer and the odometer are not workig properly car reving faster then the rpm is reading as well as speedometer?


replace VSS. Vehicle Speed Sensor if it not working properly, all sensor fail soon or later. RPM majority of the time will be faulty wiring from your distributor. check make sure there is no oil leakage into you distributor, it will also create a short contact to the reading. You can try to clean the distributor sensor. if plan to replace, get one from junk yard. Or you can put after market rpm gage which they also make.

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1 Answer

Speedometer and Odometer not working


Try checking the fuses in the inside panel

Jun 15, 2009 | 1991 Honda Accord

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