aoist Posted January 23, 2021 Share Posted January 23, 2021 My engine worms up to normal temp in about 3 min, but I have no heat until about 20 min. Even then the heat is not very warm. What could be the most likely cause? Thank you for any and all suggestions? Link to comment Share on other sites More sharing options...
Guest Posted January 23, 2021 Share Posted January 23, 2021 Possibly air in the cooling system Link to comment Share on other sites More sharing options...
CALPATHY Posted January 24, 2021 Share Posted January 24, 2021 (edited) Sounds like the heater core is plugged or less likely a kinked hose. To add: the diverter valve may not be opening all the way or partially obstructed. Edited January 24, 2021 by CALPATHY add info Link to comment Share on other sites More sharing options...
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