Hi, it's been a while since I've asked any questions here, which is a
good thing  ;-)  .  Anyway, I have a 1994 Ram 1500 4x4, with the 5.2L;
and 130,000 miles.  For about the last 6 months, I've been hearing a
splashing noise coming from the passenger side when I start it, and
sometimes randomly when driving.  It wasn't causing any problems, so I
pretty much ignored it.  But over the last couple weeks, the coolant
temperature has gotten up to 250-260 (normally runs about 190-200).
When this happens, only cold air blows through the heater, even if I
have the knob cranked to the warmest setting.  This also seems to be a
random thing, although it's happening more often now.  The coolant
level is fine.  As the thermostat is only a little over a year old, I
have a sinking feeling it's the heater core crapping out on me.  Any
help, anyone?  Thanks!