Can an alternator blow if jump starting another car?

It is possible for an alternator to blow if jump starting another car, but it's not a common occurrence. Most alternators can withstand the temporary surge of power needed to start another car. However, if the alternator is already weak or damaged, it could be damaged or destroyed by the extra load.

Things that can damage the alternator while jump starting another car include:

* Using the wrong type of cables. If the cables are too thin, they won't be able to carry the necessary current and could overheat.

* Connecting the cables incorrectly. This can cause a short circuit and damage the alternator.

* Starting the car with the engine running. This puts a strain on the alternator as it tries to charge both batteries.

* Running the car at a high RPM. This can also put a strain on the alternator.

If you're concerned about damaging your alternator, it's best to have a professional jump start the car for you.