Why won't my 90 new yorker crank sometimes?

check the gas filter. i have a 93, i thought for some reason the battery wasnt good. the car stalled, had someone look at it.

I would replace the starter relay. It is located on the fender well behind the front partof the battery. I would bet this is what you will find he problem to be. You will have to remove the battery and you will see it.