1999 Dodge Dakota heats gone sour

Hi:
Do you mean the engine temp won't get above 90 degrees? If so, the thermostat needs replaced. It may be stuck open, unless they forgot to put it back in.

Let me know if you have any questions.

Joe

Hi:
Actually if you're getting 90 degree air from the vents, thats not too bad. The only other things to chech is to make sure the engine is warming up to a normal operating temp or you could try having the heater core flushed to see if that helps. If the engine never fully warms up, you may want to replace the thermostat.

Joe