1999 Dakota 4WHDR Canadian Model. What is the proper reading for the temp gauge. My needle sits at the quarter point. Reason I'm asking is I think my thermostat is not working. I've never the heater work very well from the day I bought the truck, but I thought it had something to do with the A/C. Even with the A/C turned off, I was still able to feel cold air so I figured that in winter, this cold air was still mixing with the hot from heater and that's why I was getting medocre heat. Now that the A/C has packed it in, my heater still doesn't work great. I get warm air blowing after about 20 minutes, but not hot like in my other vehicles.

Warren

 

I would wager that you've got a clogged heater core. It's fairly common apparently.

Temp should be around 195 degrees. You could swap the tstat out but I doubt that'll help your heater.