2006-08-04 07:21:35 · 4 answers · asked by regatwo 2 in Cars & Transportation ➔ Maintenance & Repairs
The temperature blend door sounds like it might be stuck in the cool position. If it's a manual system the the cable or control head might be broken or disconnected. If it's an electronic system the head, wiring or temp blend door motor might be faulty. What make model and year is the vehicle? Check the heater hoses in and out of the heater core. If both are hot you have a plenum chamber problem. If only one is hot you have a blockage or air pocket in the cooling system.
2006-08-04 07:47:44 · answer #1 · answered by L. G 1 · 1⤊ 0⤋
Did you have heat before you changed the thermostat? If it is not heating since you just did the work on it then it sounds like you have air trapped in the cooling system. With the engine cool remove the radiator cap and loosen a heater hose at the firewall and see if the coolant level in the radiator goes down and if it does just keep adding coolant until it begins to run out of that hose and then reinstall the hose and try it again. Some vehicles are prone to trapping air in the system unless you bleed it out this way.
2006-08-04 16:10:07 · answer #2 · answered by Iknowthisone 7 · 0⤊ 0⤋
well first what kind of truck, second did you back flush the heater core, third did you make sure there are no air pockets in the system, fourth did you touch the heater hoses during operation to make sure both are hot, fifth a better description would help as i spent 4 yrs in a radiator shop
2006-08-04 14:32:17 · answer #3 · answered by Christian 7 · 0⤊ 0⤋
the temperature control valve is not working on it,,if is vacuum operated the inside unit that changes from air to heat may be bad,,it may be stuck on cool position,,it,s an easy fix,,you can buy this new or used,,and the price wont be that much different,,i own a repair shop,,and seems like they go bad more in hot weather,,than cold,,i hope this help,s.
2006-08-04 14:33:51 · answer #4 · answered by dodge man 7 · 0⤊ 0⤋