My right defrosters are barely blowing out any air while my left ones blow out a lot. Started to notice this couple weeks ago as the right side of my windshield wouldn't defrost much. Heard could be the blend door or could be stuff in the vents. Any ideas what the problem is? Or any suggestions? Also I get warm air sometimes sorta hot air, but not as hot as it should be.

 

Couple different problems there. Knowing what year your truck is would help.

For the low flow on the right, could be a blocked duct. Has the dash ever been out?

 

My truck is a 2001 Ram 1500 5.9 L

As far as I know of no the dash has not been pulled out

 

Lack of heat may be a blend door problem, or, it may be air trapped in the heater core. They are notoriously difficult to get all the air out. Your truck uses a stepper motor to control the blend door, and the little plastic coupler between the motor, and the blend door axle tends to crack apart, and you don't get full range of motion there. Easy to check, relatively.... two screws and an electrical connector. One screw toward the bulkhead is a bear to get to though.

 

I'm pretty sure I got most of the air our of it. Last flush I did was a year ago. I've been told could be the plastic piece that breaks. When I turn the temp to cold blows cool air and when chaged to hot it blows luke warm.

 

Has it EVER been truly hot since the last flush? In all reality, it's going to be one or the other. Check the 'easy' one, and see if its a problem.

 

No it hasn't been hot just luke warm, my dad had a 98 ram and his truck blew out super hot air.

 

Your heater should be able to cook you out of the truck, unless it is truly stupid-cold outside. (-20 F or colder)

So, take a peak at the blend door stuff, and see what ya got.

 

Alright I will do that. Most likely it's the blend door by how your describing it.