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Why would a 1991 Talon alternator voltage regulator keep failing and frying the battery by putting out 21 volts at high revs?
Wiki User
∙ 12y ago
i can't answer your question, but i bet i know who can. vfaq.com is a great source for info on dsm's ( diamond star motors )
Answer1.On any dsm the alternator is shot. Remanufactured alternators aren't always perfect.2.You removed the heat shields from the exhaust manifold
3. The gaskets between the head and ex. mani and/or ex. mani and turbo and/or turbo and O2 housing and/or O2 housing and downpipe are shot, replace them.
Wiki User
∙ 12y ago
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Why is your dodge charger sport running off battery only?
Because your alternator's not putting out any juice. It could be the alternator, the belt or the voltage regulator. If it's the belt that's pretty easy--get one and put it on. Either of the other two and you'll need a rebuilt alternator because the regulator is inside the alternator case.
What would cause the 'battery' light to stay on?
Some possible clues: * Alternator/Generator not putting out enough voltage to properly charge system * Voltage regulator problems * Weak battery, or one that's about to give out totally
Does running a AC in a car affects battery life?
No, because after the car is started, even in traffic, your alternator is putting out the voltage, and that voltage is controlled by the voltage regulator. What Will be affected is your gas mileage/.
What should you do if battery was not charged before installing new alternator?
My advice is to charge the battery with a battery charger before starting the engine. You will be putting a heavy load on the alternator if you allow it to charge a dead battery. This could damage the alternator.
You have a brand new battery it discharges right after it is charged again is it the alternator?
Assuming the new battery is good! The usual problem why a battery is not charging is the alternator. The battery will be discharged if the alternator is not working properly when you start the engine and when the engine is running, etc. The vehicle uses the batteries electricity instead of the alternators electrical output, and of course if the battery is not being replenished by the alternator the battery will fail in a short period of time. You should test the alternator to see if it is putting out between 12 and 15 volts. Another possible things that could be the problem with a New battery failing so quick is, maybe the proper amount of acid was not put into the battery, a short in the wiring, etc.
What does it mean when the battery light comes on a 1997 dodge avenger?
have an alternator, battery, and electrical check to find out what the problem is. battery may not be taking a charge, or the alternator is not putting out enough voltage.
What does it mean if a 2001 VW Beetle stops and the battery symbol shows?
The red battery symbol indicates that there is a problem with the charging system. It could be the alternator (faulty), voltage regulator (old), bad battery (old). or a blown fuse. If possible, after checking the fuses, you may have to recharge the battery overnight and then drive the vehicle to an automotive store (a close one) that can test the suspected equipment. I say this because it is near impossible to remove the alternator on a 2001 beetle (I had the same problem) and could not remove it myself to take in for testing, due to the tight space of its location and the other systems that were blocking access to the 2 bolts. If the alternator tests good, look at replacing the voltage regulator. The alternator can still be putting out the correct amount of charge and be good, but if the regulator goes out it may not show on the test. The voltage regulator is a small voltage sensor with brushes in it...should be around $75
Will battery lose power if alternator is bad?
Yes, the job of the alternator is to recharge the battery and run all the electronics when the car is in use. If the alternator is defective and not putting out the required voltage to keep the battery charged it will soon run down.
What causes the battery light to come on when both the battery and alternator check out okay?
The alternator may be putting out some amps, but the regulator inside is failed. The alternator is the first thing to replace when the battery lamp comes on in these vehicles. Also make sure the battery is not leaking acid. Remove the positive and negative cables from the battery and look for corrosion. If corrision is found, you'll need to replace the battery and also take the battery cable covers off to clean the contact pads down to bare metal. Make sure all corrosion is removed. Russtech67
Replaced battery and the battery warning stays on?
check the alternator. Use a digital multimeter and with engine running you should have 13-14 volts at the battery. If less than 12.5 Alternator is not charging Also check the amperage the alternator is putting out.
What is wrong if the battery light is on in a 1999 Ford Expedition and it has 11.5 volts at battery and you replaced the alternator and it dies if the battery cable is pulled while running?
Check out the battery cables. Make sure that they are connected good and not corroded or damaged. Also check the connections at the alternator. I had a 97 Expedition with a battery indicator, 12.4 volts at the battery with the engine off and 11.6v with the engine running. Replaced the alternator and then had 11.9 v with the engine running. Checked the alternator fuses on the firewall and found the 175a alternator output fuse blown. Replaced the fuse and voltage then read 14.3 with the engine running. Not sure if the fuse was blown before the alternator was replaced or not as I never thought a 175a fuse could blow without fireworks. 2 cents: Fuse..... Also check for defective replacement alternator, alternator rebuilt with incorrect regulator, damaged instrument panel cluster, or damaged or poorly connected wiring. Rocky_B Sounds like a dead battery cell. 1) Engine OFF - A servicable battery will show 12.5 volts at the terminals, anything less and you have dead or dying cells - Replace the battery. 2) Engine RUNNING - A good alternator should put out 14volts or more. 13-14volts=weak alternator, If voltage at the terminals is the same or lower after starting, your alternator might not be putting out anything or you have bad diode pairs in the voltage regulator. With most newer models the voltage regulator is attached to the alternator, so you replace both. If the voltage regulator is not attached to the alternator, you still want to replace both as voltage regulators tend to become mated to the old alternator's output over time. replacing just the alternator could cause the voltage regulator to fail.
Why is your battery light on your 2003 Pontiac Grand Am GT stay on?
Alternator is not putting out a charge.
