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85 Dodge B150 not warming up

441 Views 8 Replies 6 Participants Last post by  AllanC
1985 Dodge B150 with a 318.

I noticed that there is not a heater valve? AKA the two small rubber hoses going to and from the water pump and the heater core are uninterrupted. Is there supposed to be a heater valve on one of those lines? Is that why it may not be coming up to running temperature? Dropped a new thermostat in with no change. Thanks!
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Are you saying then engine is running cold or just the interior heat is not warm?
Almost always when an engine runs cold it is a thermostat problem. But if you think the issue is the heater core, loop the heater hose to bypass the heater core and see if the engine runs warmer.
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