Definition of quantal. 1  1 [Latin quanti how many, plural of quantus] : of, relating to, or having only two experimental alternatives (such as dead or alive, all or none) 2  2 [quantum] : of or relating to a quantum.
3. Engine movement. Another symptom of bad or failing engine mounts is an engine that moves in the engine bay. If the engine mounts are in good condition, they should be able to secure the engine firmly in the engine bay.
A struggling alternator may also cause your car radio or other electrical components to work intermittently, or cause a squealing noise in your carâs engine. Maintaining your alternator Waits say there are a few maintenance tips that can prevent your alternator from suffering an early demise. âThere are a lot of things drivers can do that causes their alternator to go out,â Waits says. âPeople could jump start the car the wrong way, or install an accessory inside that overloads it.â.