1990 Plymouth Laser • 4 cylinder FWD Manual • 260,000 miles

Which belt runs the water pump? Timing belt or serpentime? My serpentime belt is loose and I have to keep recharging my battery at night to drive, is this damaging anything?
December 31, 2010.

Other than killing the battery, it shouldn't hurt anything. Is the engine running hot? Also, I need to know what engine you have to answer your question about the water pump. I'm showing in 1990, the engine was a 1.8L. All 2.0L that I list show the timing belt running the water pump.