Does not heat to right temp. - Traeger Industries BBQ075 All-in-One Grill / Smoker

You didn't give any specifics which makes it difficult to respond because there are many reasons why a Traeger grill might not heat to the right temperature.

One of the most common is problems is the outside temperature. If it's hot, the Traeger may overheat unless it is tended constantly. When it's cold, the Traeger may not get as hot as it should based on a normal setting and you may have to set it higher to reach the temperature you want.

Other reasons could be mechanical in that the hot rod may not be keeping the firebox as hot as it should or the fan may not be running as hard as it should to get the temperature to the right setting.

If your firebox has not been cleaned, ash will effectively insulate the fire, preventing heat from building up in the cooker.

Some people clean their Traeger thoroughly after every use. Some never clean theirs until something goes wrong. I clean mine after every 4-6 uses, depending on how long my cooking sessions have been.

If I've been cooking pork shoulder low and slow for many hours, I'll clean it more often than if I had grilled steaks multiple times for 15-20 minutes at a time.

Likely, if you're cooking in "normal" outside temperature of 60-80 degrees, your Traeger should be holding fairly close to the temperature you've set. If it's not then you may have a fan or hot rod problem and you ought to contact Traeger to set what they suggest.