Disconnected heater hose & engine high Temp ?
The heater hose that feeds the heater coil for the dash heat has been plugged up by the prior owner because there was a leak. (It's plugged in the front of the RV by the heater coil.) It looks like t...
Forum Discussion
It comes from somewhere goes into and out of the heater core, exits the cab then enters the engine cooling system "somewhere".
Mechanical coolant shutoff valves are so rare that when I had a Willys Pickup back in the sixties I had to settle for a mechanical flow shutoff valve from a RAMBLER. Today's systems use chambers and trap doors to divert or block off air for A/C and heat as needed.
Returning to paragraph one. Search for and find the 2nd plugged hole in the cooling circulation. Purchase a couple of nipples, hose and clamps and satisfy your own curiosity as to whether this is the issue. If the core leaks, bypass it.
Mechanical coolant shutoff valves are so rare that when I had a Willys Pickup back in the sixties I had to settle for a mechanical flow shutoff valve from a RAMBLER. Today's systems use chambers and trap doors to divert or block off air for A/C and heat as needed.
Returning to paragraph one. Search for and find the 2nd plugged hole in the cooling circulation. Purchase a couple of nipples, hose and clamps and satisfy your own curiosity as to whether this is the issue. If the core leaks, bypass it.
