i got a 04 chevy blazer with no heat . i started with the thermostate ,changed the temp sensor . its full of coolant and all hoses are hot i can hear the gate opening when i change from hot to cold . is there another sensor or temp control
is it blowing any air
yes it is real cold when its on ac . but when you change it over for heat it feels like just lesss then luke warm
Heater core might be plugged seen that alot
both lines in and out are hot
prob the door is stuck cuz it has this rubber ring on it and it sometimes turns to a sticky mess and itll stick to the side of box and break the door on the motor ya might hold ya hand on the motor and feel if it is moving or watch for the in part of the motor to turn if it doesnt it prob stuck i just did one in a 97 tahoe and thats what it was pain in the ass job whole dash had to come out and the dash brace .
Quote from: randycrane79 on September 04, 2011, 02:19:10 AM
prob the door is stuck cuz it has this rubber ring on it and it sometimes turns to a sticky mess and itll stick to the side of box and break the door on the motor ya might hold ya hand on the motor and feel if it is moving or watch for the in part of the motor to turn if it doesnt it prob stuck i just did one in a 97 tahoe and thats what it was pain in the ass job whole dash had to come out and the dash brace .
x2 It sounds like the door if both hoses are gettin good and hot. Check vacuum lines if it uses that. Can you work upside down for like all day? loll Use the online library we have on here to get the procedure for doin that so u dont do anymore than necessary, dashes can be real tricky on these later models. For an example, ever put a heater core in a early 80's mustang/capri? Wow.
and the winner is terspr250. i pulled off both hoses blew water and air in them now i got heat thanks everyone
Quote from: terspr250 on September 04, 2011, 12:49:23 AM
Heater core might be plugged seen that alot
Quote from: 'the DON' on September 05, 2011, 07:57:59 PM
and the winner is terspr250. i pulled off both hoses blew water and air in them now i got heat thanks everyone Quote from: terspr250 on September 04, 2011, 12:49:23 AM
Heater core might be plugged seen that alot
jus seen this lol, might want to flush the whole system, they are known to plug up, you unplug them then a week or two later they will plug back up again.
I never have to worry about it because them heater cores dont like over 5000rpm mine always get a hole blown in them ==roll
Ive blown out alot of them and then switch to green antifreeze