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What causes the battery to go dead in a 1993 Mercury Cougar when it is parked the alternator seems to be working fine could it be a relay?
An alternator can charge normally but can still drain a battery if the diode(s) are defective. Try this: remove the(red) positive cable from the back of the alternator and then touch it to the post that you removed it from. Remember, this is hot so don't touch it to anything else. If it sparks this indicates the alternator is pulling current, and is bad.
What else can I help you with?
Where is the fusible link for the alternator charging system on a 1990 mercury cougar?
I can tell you that on a 2000 mercury cougar it is a fuse on the positive cable between the battery and the alternator
Why is your radio not working after installing a new battery and alternator on your 2000 mercury cougar?
Every time you disconnect a battery cable you have to reprogram the radio stations ( if that's what you are asking )
What else could be wrong other than the alternator or battery on a 2000 mercury cougar?
wires, connecters, terminals
On a 1996 Mercury Cougar which fuse is linked to the alternator?
There isn't any fuse then is linked to the alternator on a 1996 Mercury cougar. The alternator has an internal regulator, but does not have a fuse.
What would cause the battery to not charge even when the alternator tests good on a 93 Mercury Cougar?
the battery could have a dead cell, this could cause it to not charge. Have the battery tested to be sure.
Why wont your battery light go off when you changed your alternator and battery in your 99 mercury cougar?
Battery light usually means alternator not charging. Most common solutions would be be a bad alternator, bad connection, or loose alternator belt. If the battery and alt test ok than check the connections to the alternator and battery. You may also have a battery drain (something that is staying on and killing the battery)
Where is the voltage regulator on 1993 mercury cougar?
embedded with alternator
89 Mercury Cougar LS:The battery light on your dashboard display keeps blinking Will you need to replace the battery or the alternator?
This happened to me on a road trip in my 84 Cougar. It was a long time ago, but first make sure your belts are tight! But I believe you may need to replace the alternator. If the battery is old, its cheap insurance to do both.
1999 cougar battery light on?
start your car and then disconnect the battery if it dies then it is your alternator that is what i am working on right now but good luck if it is the alt you have to drop the motor cradle
What would cause the battery gauge in a 94 mercury cougar to go down when idleing but when you push the gas it shoots back up?
Its a sign that either your battery or alternator is starting to fail.
The battery dashboard light is flickering on and off on your 2000 mercury cougar what does this mean?
usually that the battery isn't taking a charge. have the alternator checked, many shops will test the charging system for free
Will an alternator freeze up on 1999 Mercury Cougar?
If the bearings in the alternator get bad enough it can lock up.
