2006 Base Roadster, manual transmission.
Hi all,
I plan on doing the hvac duo valve repair, I'm waiting on the parts. I'm getting warm air blowing constantly. I can get cool air if I put the A/C on high and using the REST button.
I've also noticed that the fan speed does not adjust properly. I've just recently replaced the blower motor resistor. I believe it may be the potentiometer that is causing the issue with adjusting the fan speed.
Example: I turn the **** to position 1 and it works at low speed but to get it to blow out at a higher speed I have to go to pos. 4. There is no difference in fan speed between 1 and 4.
I've heard that tapping the console will fix this, but that is only a temporary fix.

My questions are; Has anyone had this problem with fan speed adjustment? If so do you think it is the potentiometer? Also, is it a hard job to replace them? (I already have a few of them from Digi-Key, thanks to Mark's advice.)
Last question; The warm air blowing all of the time, could that also be the outside temperature sensor? When I first got the car if it was hot out cool air would blow in even with the controls off. If it was cold out warm air would blow in. Now it's constant warm air.
Thanks for any help in advance.