Question about 1993 Mercury Grand Marquis

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My car is having power problems. My battery has tested positive, my alternator has tested positive, and I've had my starter fixed. Any idea what else could be causing my car's power problem?

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Check Ignition Terminal For Bad Connection Also check Solenoid Coil For Bad Contact ...Also Check Alternator Regulator for Over Heat Diode ..the Current will drop and short Battery and probebly burn fuse and Relay...

Posted on Oct 07, 2010

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2008 jeep wrangler, no power to ignition or accessories, after replacing starter.


Take it to a shop. U fu--ed up royally doing the swap. If you had done the job correctly you would not be having this problem. Decent thing to do at this juncture is help your buddy pay for the correct repairs.

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I have a 1985 Ford F150 That does not run. Will not turnover & no lights. I have had the alternator & battery checked. Both are good. I have replaced the starter selanoid coil, Ignition coil, starter...


There can be a starter lock-out which requires your to foot press the clutch or the brake pedal. But without lights you have a different problem.

Check your fuse block for power. There is a Master link somewhere under the hood and they usually put them close to the Positive side of the battery. The Master link is like a fuse only in wire form. You will also find a heavy wire that supplies power to the fuse block. Often the fusible link and the feed wire to the fuse block are the same wires.

Your Alternator, battery, etc. will test good all day long, but you need power in the fuse block.

Turn the Ignition to ACC and notice if the radio has power or turn the key to run and notice if the Brake lights work when you press the brakes.

If you have power there, then troubleshoot the wire to the starter relay. Most likely when you turn the ignition key(start) you will not have power going to the starter relay like you should. You can also test the coil Positive wire with the key in RUN position.
It should have power.

That's all I have for you.

Oct 14, 2013 | 1985 Ford F150

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Will your car turn over if the starter is not working


You can test the alternator without taking it off by simply starting the vehicle and while it is running, remove the positive battery connection. If the alternator is bad, it will stall. The starter should turn over with ease and not labor while doing so.. If it is laboring, it could be the starter or the battery. An Advanced auto store will test the battery for you while it is in the car. Simply take it to the store, go inside and ask one of the tech's inside to test it for you. If you've ruled out the alternator and battery, it is most likely the starter.

Jun 11, 2012 | Mazda Cars & Trucks

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Nissan Altama Starter Relay electrical problems or a fuse?


Or the battery cables ! Do you know how to use a voltmeter ?
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Do you know how to do basic automotive electrical testing ?
How to voltage drop test starter motor circuit
Electric Testing Techniques You Need to Know Here is a place to view wiring diagrams ! http://www.bbbind.com/free_tsb.html


Apr 08, 2017 | 2004 Nissan Altima

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Nissan Altama Starter Relay electrical problems or a fuse?


Double check the battery positive connection wiring carefully as it commonly has connection problems when the battery is changed.

Apr 08, 2017 | 2004 Nissan Altima

1 Answer

99 Mercury Cougar 2.5 won't turn over, or jump


The alternator light comes on when the field voltage drops below a certain voltage. There is a possibility the connector to the alternator is corroded, as this is commmon, and may be a source for a false indication of trouble. There is also the possibility the regulator is failing. If the voltage was below 13.8 volts when he measured the voltage, he was only reading battery voltage. if he measured between 14.2 and 14.8 volts the alternator was putting out power.

An indirect way of checking is turn on the headlights, high beam when it is idling at night. turn on the heater so you can see the lights dim slightly, and then step on the accelerator to bring engine speed up to about 1200 RPM- the lights should get brighter. If they do not, the alternator is not putting out current like it should be.

Load testing would only measure the battery, it would not load the engine at all if the alternator is not putting out power. If the engine bogged down when alternator is load tested, the alternator is putting out power. The alternator is converting engine power to voltage and current to charge the battery, hence the load on the engine.

If the alternator has 75000 miles on it, replacing it is a pretty good idea as the brushes are quite worn at this point. That should remedy the situation.

It would also probably be a good idea to replace the starter solenoid. Turning the key 2 or 3 times before the starter engages is never a good sign.

The only way the heater might enter into your situation is if something is not shutting off when the key is in the off position or removed. Those phantom loads will find an electrical path to ground through the fan motor. If you have installed anything aftermarket that can be powered up without the key needing to be in the ignition is your culprit. The pahnatom loads like that can discharge a battery completely in a matter of just a few days.

Jan 16, 2012 | 1999 Mercury Cougar

1 Answer

1999 ford mustang cobra alternator troubleshooting


Generally, you can check and test alternator with this procedure...

1. Clean the positive and negative battery terminals to ensure a good connection with the tester's clamps.
2. Connect the positive and negative clamps to the appropriate battery terminals. The clamps must make firm contact with the battery terminals or the test results will be inaccurate or the tester may not work at all.
3. Turn the tester on and choose the option for "full charging system test." This will test your battery, starter and alternator and provide the most accurate picture of the problem.
4. Follow the directions on the tester's screen. These instructions will include cranking the vehicle after the battery test is performed, holding the engine at a certain RPM range and turning on certain accessories.
5. Read the results displayed on the tester's screen. The tester should scroll through the results, starting with the battery, then the starter and finally the alternator. An alternator test result showing diode ripple problems indicates a bad alternator.

Hope helps (remember rated this).
  • Step 2 Connect the positive and negative clamps to the appropriate battery terminals. The clamps must make firm contact with the battery terminals or the test results will be inaccurate or the tester may not work at all.
  • Step 3 Turn the tester on and choose the option for "full charging system test." This will test your battery, starter and alternator and provide the most accurate picture of the problem.
  • Step 4 Follow the directions on the tester's screen. These instructions will include cranking the vehicle after the battery test is performed, holding the engine at a certain RPM range and turning on certain accessories.
  • Step 5 Read the results displayed on the tester's screen. The tester should scroll through the results, starting with the battery, then the starter and finally the alternator. An alternator test result showing diode ripple problems indicates a bad alternator.

  • Read more: How to Test a Car's Alternator | eHow.com http://www.ehow.com/how_2079784_test-cars-alternator.html#ixzz0spTYveGJ

    Jul 05, 2010 | 1999 Ford Mustang Cobra

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    Have you checked the Alternator? If the Alternator isn't working, the battery isn't being charged by the car while it's running. Simple/cheap fix if that's the problem. Good luck.

    Nov 29, 2009 | 2005 Dodge Neon

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    Truck will not start.


    I think your starter went out not the alternator. chk. the starter.

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