Hey all
Like the title says...I'm at my wits end with this no heat condition in my wife's 94 RMW. At this point, almost everything has been replaced... (at least that I can think of). Here's a brief timeline of events and what has been done and replaced.
Back in March, I drained the cooling system and added straight water with the Prestone flush. I also pressure washed the coolant reservoir. Soon after that, the water pump gave up its ghost and it would pump coolant out rather quickly.
I took it to a mechanic friend. We replaced the water pump, thermostat, coolant sensor, and were stumped as to why it would continually boil over after 30 minutes of idling. This led to replacing the radiator and radiator cap as well as the steam pipe.
I got it back a few weeks ago. Pulled the drivers side knock sensor and drained the system and installed a Delphi (AC Delco) heater core. At that time I pulled the electric actuator for the temp door. It seemed to move as it should with the temperature change buttons.
Still no heat...
After about 3 days of driving, the plastic T and coolant restrictor snapped...I replaced them with universal Motormite pieces. Got her running, but no heat.
Finally, this past weekend, I got into the heater diagnostics using the shop manual. Everything seemed to be in spec...I cleared the two stored trouble codes and they have not come back.
Any thoughts would be appreciated...I'd like to be able to drive the thing this winter without freezing
Like the title says...I'm at my wits end with this no heat condition in my wife's 94 RMW. At this point, almost everything has been replaced... (at least that I can think of). Here's a brief timeline of events and what has been done and replaced.
Back in March, I drained the cooling system and added straight water with the Prestone flush. I also pressure washed the coolant reservoir. Soon after that, the water pump gave up its ghost and it would pump coolant out rather quickly.
I took it to a mechanic friend. We replaced the water pump, thermostat, coolant sensor, and were stumped as to why it would continually boil over after 30 minutes of idling. This led to replacing the radiator and radiator cap as well as the steam pipe.
I got it back a few weeks ago. Pulled the drivers side knock sensor and drained the system and installed a Delphi (AC Delco) heater core. At that time I pulled the electric actuator for the temp door. It seemed to move as it should with the temperature change buttons.
Still no heat...
After about 3 days of driving, the plastic T and coolant restrictor snapped...I replaced them with universal Motormite pieces. Got her running, but no heat.
Finally, this past weekend, I got into the heater diagnostics using the shop manual. Everything seemed to be in spec...I cleared the two stored trouble codes and they have not come back.
Any thoughts would be appreciated...I'd like to be able to drive the thing this winter without freezing