What causes an alternator to run very hot?
What causes an alternator to run very hot?
Alternator running very hot. ABS pump not an issue, pulled the fuse and have the same result. Alternator running hot to the point where you cannot touch it and this is my third alternator. Have installed one new battery and everything was good for an hour then it seemed that something cut-in and now running hot again.
What happens when an alternator fails in a car?
When an alternator fails not only will the battery light come on but it can cause the check engine or service engine soon warning lights to come on. Never disconnect the battery while the engine is running to check the charging system.
Can you test an alternator while the engine is running?
Never disconnect the battery while the engine is running to check the charging system. This can cause a major electrical system malfunction such as short circuit to the main computer. Removing the battery cable to test the charging system was used for vehicles made before 1976 and not today’s vehicles.
What should my alternator voltage be at idle?
Have a helper start the engine and hold the RPM’s just above idle at about 1500 and observe the meter. It should read between 13.6 and 15.2 volts depending on battery condition and state of charge. If the voltage on the meter stays the same or drops when the engine is started the alternator is not charging.
Alternator running very hot. ABS pump not an issue, pulled the fuse and have the same result. Alternator running hot to the point where you cannot touch it and this is my third alternator. Have installed one new battery and everything was good for an hour then it seemed that something cut-in and now running hot again.
Why is the voltage reading on my alternator going up?
While watching the voltmeter display, start wiggling wires at the back of the alternator, the battery, and the remote voltage regulator (if there is one). If the voltage reading on the meter display goes up while wiggling one of the wires, you’ve found a bad electrical wire or connection.
Can a Toyota Sienna alternator get too hot?
Yes alternators give off heat, they have an internal fan to cool it. The will get too hot to touch after running a while. I have a 2001 Toyota Sienna with the same issue. I have gone through 4 alternators in a week. Did you find out what was wrong? Did anyone find an answer ?
Can a car start with a bad alternator?
After sitting for enough time for the alternator to completely cool off the car will start up fine, but the process soon repeats itself. I removed the alternator and had it tested professionally and was told that there were no indicators that pointed to it being a bad alternator.
Can a externally regulated alternator be used on an externally regulated vehicle?
I smoked an internally-regulated alternator on an externally-regulated vehicle, because I connected the two wires at the alternator according to GM spec, but used the damned MAD Electrical wiring diagram at the external-regulator connector.
What kind of wire do you need for an alternator?
Build and install a bridge wire, 14 gauge, one ring terminal on one end, one .250 wide flat female blade terminal on the other, from that large BATT term on the new 12SI alternator, to the number 2 terminal on the rear of the new alternator. If you have either a volt meter, or ammeter, you are done, finished, works like stock.
