my car ran hot themostat had stuck. we replaced the thermostat water pump n radiator cap. what do i do now?


Asked by Jan 18, 2014 at 10:26 PM about the 2005 Nissan Sentra 1.8

Question type: Maintenance & Repair

when car is warming up water moves freely in bottom radiator hose but once its fully warm
no water moves n heater will not work it does not run hot anymore. is this my head

6 Answers


You have an air lock in the system. Go to advance, autozone, or harbor freight and they have an air bleed kit for this. This is the only way to get all the air out.

2 out of 2 people think this is helpful.

we have burped it for days yet the air keeps coming back everytime we test drive I still need to do that?

1 out of 1 people think this is helpful.

Yes,with this tool it will get all the air out without a mess.

1 out of 1 people think this is helpful.
Bruce Warnick

if after you are sure you have air out of block then yes it may be head gasket. try this trick to get air out. raise front of car so that rad cap is higher than all else. leave cap off and run car till hose coming away from thermostat is hot, top off radiator. You should now have heat no air lock and temp should be normal. If no heat , using hand feel both hoses going into and coming out of heater. if one is hot and one cold or very much cooler than heater core plugged.

1 out of 1 people think this is helpful.
Mark Beno

sounds like thermostat is in back ward .

Bruce Warnick

Mark , Can't be backward housing will not fit

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