1997 Mercury Cougar XR7 Logo
Anonymous Posted on Feb 28, 2010

My 1999 cougar alternator stopped charging also no speedometer or techometer or cluster lights even after installing a knew alternator still not charging ,car will run until battery goes dead than stall.can you help

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  • Anonymous Mar 01, 2010

    yes i have checked all fusses ,under the hood and cabin fusses they all seem to be ok ,but i never did recieve a owners manual so i dont know what fuse is for what.the car will start when the battery is chargedbut when i put the amp tester on it shows not charging,unhook the battery terminal the car stalls.(this is a brand new alternator not a rebualt)so no charging ,no speedometer,no techometer no fuell or themperture guagesand no lights in the dash when the key is turned on beforecontinuing with key to start car.this happened at the same time the alternator stopped charging tested the fusses and relays and i cant seem to find the problem even thought ive worked as a mechanic my self for over 20 years.this one has me really confussed think you can help

  • Justin Johnson May 11, 2010

    Have you checked all the fuses and relays? There may be a fuse box in the cab somewhere and there's usually one with larger amp fuses under the hood.

  • Anonymous May 11, 2010

    does your battery come on when you turn the key to start it?(light check)

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  • Posted on Mar 02, 2010
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If you get no red light for the battery charging system the charging system will not work. The indicator light initally excites the field to start charging.

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My # 30 fuse keeps blowing... 99 Mercury Cougar

If it is a 7.5 amp fuse, it powers the charge warning light in the cluster and applies voltage to the alternator to make it charge.
You will need someone to trace that circuit and look for a short to ground. It may be in the cluster or in the harness.
Something else besides the fuse is making the car not start.
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History: 2 days ago the battery light came on. Car ran fine that evening. The next morning. The tach stopped working. a minute later the speedometer stopped working. Then, another minute later, the car...

Replacing the fuse the first time was the right move, becuase it could have been a fluke that it blew. Replacing it again and again was not! You should have found out EVERYTHING that the #2 fuse controlled and verified that the components weren't pulling excessive amperage (shorted condition). By replacing the fuse over and over, you might have made the problem worse by subjecting good components to something that was shorted.

BTW next time pick the oldest guy at autozone to help you, if the counter help knew their stuff they would have told you the same thing I just did!
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loose belt, if it is worn then it will not keep the battery charged...
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possibly bad alternator, not keeping the battery charged enough, that would explain the stalling, and loss of power.. hope this helps you.....
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Voltage regulator is not doing its job, and it is allowing excessive voltage into the circuit. If you do not address this problem, some light bulbs and LEDs might start to burn out. Either replace the voltage regulator, or modify the circuit between alternator and regulator to match later model cougars, where this problem was solved.
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1995 Cougar Odometer/trip-meter inop

Section 13-01: Instrument Cluster—Conventional 1995 Thunderbird, Cougar Workshop Manual REMOVAL AND INSTALLATION Instrument Cluster Removal and Installation
  1. Disconnect battery ground cable (14301) .
  1. Remove screws holding instrument panel reinforcement (017A28) .
  1. Remove screws holding instrument panel lower shield (045G02) .
  1. Remove fasteners holding steering wheel column as outlined in Section 11-04 . Gently lower steering column.
  1. Remove fasteners holding the instrument panel finish panel (044D70) and gently pry off.



  1. Remove four instrument cluster retaining screws. (Do not remove screws from the instrument cluster main lens (10887) and instrument cluster mask (10890) ).
  1. Slide the instrument cluster (10849) to the right of the instrument panel opening and unhook the instrument panel harness from the back of the instrument cluster .
  1. Remove the instrument cluster from the instrument panel (04320) .
-----------------------
Speedometer/Odometer Federal law requires that the odometer in any replacement speedometer (17255) must register the same mileage as that registered in the removed speedometer . Since the speedometer mileage cannot be reset on this unit, affix odometer sticker to driver's door pillar and record original vehicle mileage. Removal
  1. Disconnect battery ground cable (14301) .
  1. Remove the instrument cluster (10849) as outlined.
  1. Remove seven screws retaining the instrument cluster mask (10890) and instrument cluster main lens (10887) .
  1. Remove speedometer assembly.
Installation
  1. Position the speedometer assembly to the instrument cluster back plate (10848) and install.
  1. Position the instrument cluster mask and instrument cluster main lens to the instrument cluster back plate and install the seven retaining screws.
  1. Install the instrument cluster as outlined.
  1. Connect battery ground cable and check the operation of the speedometer .
please rate if this helps
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