Why does my 1998 Dodge Ram not have heat?

nepa28male

New member
I put a water pump on my truck over 2 years ago and ever since my truck has lil to no heat. The radiator was taken to a proffesional shop to be cleaned and there were no blockages to be found. The truck can be driven and parked and in a few minutes the temp gauge shows it cools off way fast and the bottom radiator hose is not that hot no matter how long the truck is driven for.
The truck temp gauge will go up to regular operating temp just i get no heat in the cab. I have changed the thermostat twice and i still have no heat.
 
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