Have you replaced the thermostat?
Thanks for using justanswer- Doug
well your temp gage, after about 7-10 minutes should be hanging out in the middle of the section - if not consider the thermostat change a good chance to do some maintenance. Does the airflow seem adequate thru the vents (warm or not)?
I'll post the thermostat replacement instructions just in case:
3.0L, 3.3L & 3.8L Engines
Good, gonna have to get a bit more hands on, can you access the heater hoses? if so make sure there both "hot" just to eleminate a restriction in the heater core itself.
best access would be underhood / undercar- watch for manifolds(hot) belts pulleys ect
I wanted to confirm the basics, yes more than likely with the info I have so far I would be inclined to believe either a blend door control motor issue or the control head is on the way out. -
well I was just trying to retreive that info to no avail. don't quite get the problem but it is on my end.
let's do this by the seat of the pants
can you hear/ feel the blend door move when manually switching between hot and cold usually there is a slight audiable noise or sometimes you can hear the difference in the sound of the airflow?
did find this of intrest:
I was going in this direction, but my info is still messed up- doug
did you get a chance to use the diagnostic? was wondering what code it turned up? will check back later - doug
To be honest, sticking with blend door motor - unless the door is bound or warped-
supprised there were no codes- but not really. sometimes all it takes is a voltage loss or spike and the best of electronics can fail.