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I have a 1996 Mustang GT and I had a new battery and battery cables put into it. I never had a problem until then.

My car starts fine but after about 10-15 minutes my battery drains and is dead. If I let it sit for a while it recharges and the car will start and drive again for about 10-15 minutes.

The alternator has been checked and is great, and the battery is new. Any thoughts? Ground problems? Voltage regulator? Let me know what you think!

2006-09-24 12:48:20 · 7 answers · asked by Ice4444 5 in Cars & Transportation Maintenance & Repairs

I had the battery and cables replaced from normal wear and tear, and the battery was old.

2006-09-24 12:52:24 · update #1

Everything is stock; the starter works fine, and no loose wires scene.

2006-09-24 12:58:47 · update #2

7 answers

Check the voltage at the battery terminals while the car is running. Should be about 14 volts. Not less than 12.7 . If not, check the posts and cables for corrosion and then replace the voltage regulator.

2006-09-24 12:53:30 · answer #1 · answered by Bob S 3 · 0 0

Starter keeps going after releasing the key.
Check your starter relay.
Make sure the starter stops when the engine starts up!!

It drains the battery faster than the alternator can charge it.



ADDED:

There is no way a new battery can go dead in 10 to 15 minutes just running a car. EVEN with the lights, heater, wipers, stereo, defroster, A\C, everything on!!!

Your starter draws around 340 amps under load.
Your stock alternator generates 40-60 amps. If it's working right.

Next time feel the starter motor and see if it's hot?


Is it o.k. to drive my car with my battery disconnected?
Something is wrong with the power from my alternator to my battery. My alternator and battery test o.k./the battery is new.

My car broke down in the boonies and it's going to cost about $250 to get it towed to the shop because it's out of my auto clubs towing area.

When I start my car the voltage is 8 and then in about 10 minutes of driving the battery is drained. If I let it sit for about 30 minutes, it recharges and starts again and drives for 10 minutes until all of my lights and power go out.

If I start my car and disconnect the positive cable on my battery, my car runs normally and all the power gauges and voltages are normal. Would it hurt my car or be dangerous to drive it the 20 miles to the shop?

2006-09-24 12:55:51 · answer #2 · answered by Mr. KnowItAll 7 · 0 0

When the battery was changed a wire may have fallen and wasn't seen when it was reconnected. Check around the Battery for any wire that's just sitting there disconnected.
If you never had the problem before that then that is probably what happened. the cable more than likely if found connects to the positive side of the battery

2006-09-24 12:56:43 · answer #3 · answered by whtsthislif4 5 · 0 0

something had to have occurred to the voltage to the battery from the alternator at the same time as the paintings changed into done Battery to engine block floor left loose. Or the cable isn't bolted precisely like the single taken off. Did you employ aftermarket battery wires? if so i'd advise searching at yet another 96 GT Mustang to make certain your wiring does precisely what FORD wiring does and the position it really is linked. finding out the alternator off of the motor vehicle would no longer instruct skill motor vehicle wiring issues and the voltage regulator is outfitted contained in the black sq. element hung on with 4 torx screws again of the alternator.

2016-11-23 19:45:50 · answer #4 · answered by Anonymous · 0 0

yes ive had a problem with a 96 t-bird(same alt) doing the exact thing will show good on test rack and run 5 miles and drain battery. the alternator was 160 and they tried to tell me thats what i needed. for 50 i bought the voltage regulator which mounted to the back and fixed the problem. this is for sure your problem. load tests all show good. alt. diodes were good. could not get it to mess up unless it was on the car.

2006-09-24 13:39:22 · answer #5 · answered by Sheena 3 · 0 0

the voltage regular is built into the alternator and if you had a voltage test done check the belt and the idler pullie and see if you have enough tension on it you should get about 14.5 volt out of it also do a load test on the battery see if its defective. also when it dies check the battery right away and see if it is really dead because it could be a defective starter a flat spot... good luck ....

2006-09-24 13:04:58 · answer #6 · answered by clutchconway55@sbcglobal.net 2 · 0 0

did you install anything after market? Sounds like you have something being on that shouldn't be.

2006-09-24 12:57:12 · answer #7 · answered by Kenneth S 5 · 0 0

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