1999 Lincoln towncar...something is contin. draining battery??

I can't imagine how changing the belt would have any effect on the electrical system if the alternator is working.
The way you check for a drain is to disconnect the battery ground cable and use a test light to make the connection between the battery and ground. If there is something drawing power from the battery the light will glow.
Then you pull each fuse from the fuse boxes until the light goes out. You also disconnect the starter and alternator if necessary.

I would check fuses and relays first..Check the voltage coming off the alternator on the big red wire,,instead of across the battery..Some cars still use a fusible link..You would no that if you have charging voltage at your alternator but not at the battery..Should be 14.0 volts or close to it..with no load

This has become a pretty common problem with the mid to late nineties lincolns. I had the same problem. What I found out from research and trial and error is your battery may be weak. So try replacing your battery. also try resetting your Inertia shut off switch located in the trunk on the drivers side front panel.

It seems the timing is advancing well. have a tune up at service center. Starter must also be checked.

Hello info49624

you have done everything right so far. now since what you have done didn't work. This could only mean that your Alternator is no longer working. The purpose of the alternator is to keep the battery charged up so all your car functions work. The alternator stands by to restore the electrical charge used to crank the engine. It , once the engine is running, charges the battery and runs the electrical system of the car. It typically takes about twenty miles of driving to restore the charge to the battery from starting the engine. Most alternators are internally regulated to assure proper output voltage . Older cars have alternators with external regulators There are some exceptions to this but this true in the majority of cases. One of the exceptions is a high current alternator for a Lincoln that delivers 120 volts AC for receptacles (the same as at home) in addition to the charging of the battery.

-hopeufixit-

It sounds like your alternator is defective and draining the battery.
Since the alternators function is to charge the battery, if it's not working you will be running off battery power. With a short in the alternator that would explain the sudden drain on the battery.

BUT before you buy anything have the alternator tested first. It could be something more simple like a bare wire grounding out against metal, which would cause the problem.

Simple things first, so test it before you buy a new one. A parts store will test it for free.

Even still I suspect the alternator. A new will cost $160 maybe more.

Make sure the alternator is still connected to the battery. Should be a smaller wire running from the alternator to the positive post of the battery. There may also be a fuse for the alternator, check that.Your battery is not charging.

1998 Lincoln Towncar - I have put a new battery and a new alternator. The car will run for as long as the battery has juice, then dies. Does anyone have any suggestions on where to go from here?

over drive is off

when you were driving, after replacing the battery, if u felt the car loosing some horse power, until it dies, then YES its your alternator, it is not recharjing the battery with power, so the car keep on sucking the battery until it dies, try to check your alternator, or check your the plug "located on the alternator itself"