No heat--What are the causes of luke warm heat at idle & cold air when moving? on 1995 Chevrolet Caprice

car & engine running great. water pump just replaced. coolant flush recent. no engine code. heater valve is new. heater core is NOT leaking.

by in Woodbury, NJ on January 08, 2013
2 answers
ANSWER by , January 08, 2013
1- Thermostat stuck open. 2- Heater core restriction. 3- Low coolant level. That is about it!!
ANSWER by , January 08, 2013
I agree with wetry it could be a stuck t stat