If you changed the water pump, make sure it's the correct one. Check that the blades inside are deep enough ond have the same number of fins. All that will fit are not the same, I've found some that have had a shallower blade assy inside and therefore don't move much water (too much clearance between the blade and the back of the cavity). Good Luck, Ray > From: "David Zakarian" <arshog@xxxx> > Date: Sat, 31 Aug 2002 11:56:32 -0700 > To: "Chrysler Club" <Chrysler300@xxxxxxxxxxxxxxx> > Subject: [Chrysler300] over heating 392 > > The next mystery. When running the hemi it overheats. > 1) radiator has new core > 2) with radiator cap off, water seems to be circulating(looking in the fill > hole) > 3) with cap on and run for a while(20 minutes), it overheats and when the cap > is removed it spouts water out the fill hole like a stuck thermostat(no > thermostat in the goose neck at this time so that can not be it). > 4)when the petcock on the radiator is open and running water in the radiator > engine cools down right away. > > seem to me I'm down to the cap or fan clutch but I don't know if either would > cause these symptoms, any other good suggestions? > > Zak > > > [Non-text portions of this message have been removed] > > > > To send a message to this group, send an email to: > Chrysler300@xxxxxxxxxxxxxxx > > For list server instructions, go to > http://www.chrysler300club.com/yahoolist/inst.htm > > To unsubscribe from this group, send an email to: > Chrysler300-unsubscribe@xxxxxxxxxxxxxxx > > > > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ > > >