I have a 86 Dodge ram with a 318. It is fine one day and over heats the next,ive had rad. boiled,new thermasta?

3 responses so far ↓

• 1 Philip G // Nov 8, 2008

  New thermostat….

• 2 dodge man // Nov 8, 2008

  check the water pump on it they,ll be good one minute and then go bad the next,what happens is the blades get worn down enough that they wont pump the coolant good any more then it starts to overheat,id also check and make sure you got a good thermostat,i bought two the other day and both were bad from the same parts store,this happens a lot now days,you,d be surprised of how many returns they actually get a day on bad thermostats,it has to be a coolant flow problem with it,good luck.

• 3 moparman // Nov 8, 2008

  you may need to replace the bottom radiator hose they can collapse.