Q: Alternator is overheating...had it tested and was told everything looked good. What would cause this problem?

asked by on

Alternator is overheating...I got it tested and was told the problem wasn't the alternator. No power at all.

My car has 154000 miles.
My car has an automatic transmission.

Hello, thank you for writing in. The charging system is rather simple including the alternator, battery, and the cables. If you have tested the alternator off of the vehicle, there may be another component in the system that is causing your problems. You will want to test the battery, and the wires between them. Both the battery and the cables can cause excess resistance, which is associated with electrical systems heating up. This is, for example, how cigarette lighters work in vehicles. Resistance can be tested easily with a multi-meter, but an understanding of electrical systems helps a lot. For more help with this testing, contact our service department to schedule an appointment.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Alternator is overheating...had it tested and was told everything looked good. What would cause this problem?

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Gas smell

Hi. There was a recall back in 2012 for over 40,000 GM vehicles with a potential fuel leak. The source of the leak is a cracked port on the fuel pump module. There have been confirmed failures of the module...

Q: Everything time I slow down it makes clicking noise

Claimed by Jeff Engstrom

Q: Lights staying on

Hi. You don't specify which lights are stuck on, so I'm going to assume you're talking about the headlights. The problem could be the headlight switch, a stuck closed relay, a short in the circuit or a problem with the...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...