Heater acting up

That sound exactly like it. I will check it next week it suposed to get + 12
C here tuesday.
Snowing today -8


thanks

Pat


"Mike Romain" > wrote in message
...
> You have a vacuum leak somewhere. The flappers are vacuum controlled.
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's
>
>
> Patrick wrote:
> >
> > If i put the heater say mid and windows, It will change orientation
> > depending on how the engine rev....
> > so mid and windows heating at 1500 RPM and will get by himself to
windows
> > and feet at 2000 rpm
> > That's so weird.....
> >
> > what are the possible fix ?
> >
> > 96 GC Laredo 4x4 I6