I bought new in 2002 a Gulf Stream Ultra Supreme class A coach. Since new when you are driving down the highway you can not turn the temp from cold to hot or the other way around or any thing in the middle unless you come to a complete stop and let the engine go all the way to an idle. I dont care if you are going up hill, down hill, flat land, 30 mph or 80 mph it will not change until the motor comes to an idle.
I have worked on cars all my life and know about the vaccum one-way valve that goes bad and when you accel it goes from the floor to defrost and so on but this is really odd. I though just-n-case some one out there has heard of this I would post it.
Thanks, Barney
I have worked on cars all my life and know about the vaccum one-way valve that goes bad and when you accel it goes from the floor to defrost and so on but this is really odd. I though just-n-case some one out there has heard of this I would post it.
Thanks, Barney