Q: New radiator, which was installed incorrectly and overheated my car. Now my alternator is going out could this be related?

asked by on August 01, 2017

I recently replaced my radiator, which was installed incorrectly and caused the engine to overheat. That has been resolved but the alternator is causing the engine to shake, which started when the car overheated. Could the radiator issue be at fault for the alternator going bad??

Alternator Replacement $151.62 - $1237.14 Get a Quote

Overheating can damage many engine components such as the thermostat, crankshaft position sensor, and so forth. Overheating does damage alternators but the overheating in alternators is typically caused by electrical overloads, that is too much current flowing through the alternator. However, if external heat applied to the alternator is high enough that will have the same damaging effect. Unfortunately, to determine the exact failure mode of your alternator, that would require a forensic (laboratory) investigation and such is not economical. To have the alternator inspected and replaced, including the charging circuit, please use YourMechanic’s alternator inspection/replacement service page and the responding certified mechanic from YourMechanic will get this resolved for you. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

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


Experienced Mechanic?

Earn up to $70/hr

What others are asking

Change timing belt and not starting

Have a 2006 Lexus IS350 with a code of P0420 saying catalyst System Efficiency Below Threshold Bank 1

Hi Phoebe. Thanks for contacting us today. When the oxygen sensors have readings that are similar to each other, it is an indication that the catalytic converter is not working as intended. If the voltage of the downstream oxygen sensor...

Battery light is on

You may have a failing voltage regulator that could be allowing the alternator to supply too much or too little amperage to the battery resulting in the battery never maintaining a consistent charge as it is designed to. The voltage...

Why do i keep getting the po300 code after replacin plugs,wire,coil packs and cleaning throttle body. i have checked fuel pressure

P0300 signifies that there are random misfires. Consequently, there is usually a "global" cause and there are quite a few such causes including: fuel injectors that are defective, EGR valves or tubes that are clogged, ignition timing that is off,...

My Chevy blazer is overheating and the heater started blow cold air but now doesn't work at all what could that be?

The heater not working in some cases may be related to the overheating problem you are also having. This may be due to a faulty heater blower motor or potentially a bad heater core. As you may know, the heater...

Powertrain malfunction indicator light is on

Hi there. From the description you have provided, driving your vehicle for about an hour, lost power, powertrain malfunction indicator illuminated, later the powertrain malfunction indicator and service engine soon light illuminated, is difficult to estimate the cost of repair....

My vehicle has problems when accelerating and it makes like some kind explosions.

You should have the fuel pressure checked first and then scan the computer for any codes and have them repaired as needed. The lack of power may be a low fuel pressure or clogged fuel filter problem. If these are...

Engine rumbles and vibrates while idling

You might want to try watching my video "How to Fix a Car That Idles Poorly." You just take the plastic plenum that goes from the air filter to the intake and get some throttle body cleaner. Spray the throttle...

What does the charging system Warning Light mean in a 2012 Ford Explorer?

The charging system Warning Light is located on the instrument panel. This light illuminates when your vehicle’s battery is not charging properly. It’s important to have this issue resolved quickly, or else your battery may not be able to charge,...

Related articles

Symptoms of a Bad or Failing Alternator Belt
A failing alternator belt can cause the Battery Light to turn on, dimming or flickering lights in the car, and engine stalls.
How to Diagnose a Cooling System Problem
You may be driving down the road or sitting at a stop light when you first notice the temperature gauge in your...
Can a Car Battery Overheat in Hot Weather?
Hot weather can cause battery fluid to evaporate and make it hard to start your car. Battery overcharging decreases the lifespan of your battery.