I have new radiator put in due to leak, 96 Dodge Ram Van 1500.
I have little to no heat, changed t-stat, flushed heater core, burped system on incline. Heat is slightly better. When I rev the engine it has great heat; let off and let idle, heat goes away.
Please help all answers appreciated! Next thing is the water pump. No leaks anywhere! Temp gauge reading normal then drops to 1/3 mark.