Replaced my thermostat. But it overheats. Heater does not blow warm air until temperature gets very hot. Hose from thermostat gets hot but bottom hose on radiator is cold. Overflow tank fills up.
You need to purge the air from the cooling system by leaving the radiator cap off and running it until warmed up and refilling the radiator as necessary during this process. Coolant may be pushed out of the radiator until the thermostat opens up, but that is just the air pockets coming out. Refill as necessary.
Search Nissan Quest Questions
Are you a UK consumer? CarGurus now has a discussion forum in the UK.
Nissan Quest Experts