09-25-2017, 09:25 PM
if the engine is at 180f, , then the engines thermostat is ok.
if the 2 hoses , both run near there, (there is no water valve on any track/kick) then the water if flowing and the core is hot. i use and IR thermal gun to do that but machanics, just fingers.
if those 2 are true, then for sure the dampers are failing.
it is that simple, (sure an fan blows)
the dampers do 2 things.
1: the hot cold blocks the hot water core. none- some then all.
2: the other damper mixings is outside air(for better or worse) so it too can fail.
one ther cause, is the core if blocked up, packed up in crap inside, blocking say 75% of the water flow.
ever back flush it? check that it does flow, good.
but with partial block there would be some hot are on low fan speed. on full speed, and clogged water, the exit water tube will get cold, so... back do square one on water.
some 99s had damper motors, and some are cables
the cables sheaths must be clamped down or the internal cable fails.
http://www.fixkick.com/AirCond/heater.html
most fsm books do not teach car repair.
only cover, what is unique on your car,
my page hase information in any FSM , factory service manual, even has core pull slide show, from nice guy contrib.
if the 2 hoses , both run near there, (there is no water valve on any track/kick) then the water if flowing and the core is hot. i use and IR thermal gun to do that but machanics, just fingers.
if those 2 are true, then for sure the dampers are failing.
it is that simple, (sure an fan blows)
the dampers do 2 things.
1: the hot cold blocks the hot water core. none- some then all.
2: the other damper mixings is outside air(for better or worse) so it too can fail.
one ther cause, is the core if blocked up, packed up in crap inside, blocking say 75% of the water flow.
ever back flush it? check that it does flow, good.
but with partial block there would be some hot are on low fan speed. on full speed, and clogged water, the exit water tube will get cold, so... back do square one on water.
some 99s had damper motors, and some are cables
the cables sheaths must be clamped down or the internal cable fails.
http://www.fixkick.com/AirCond/heater.html
most fsm books do not teach car repair.
only cover, what is unique on your car,
my page hase information in any FSM , factory service manual, even has core pull slide show, from nice guy contrib.
http://www.fixkick.com