On Sat, 19 Aug 2006 11:38:49 -0500, clubairth@bellsouth.net wrote: >Or you could be low on Freon. Or, it could just be the pressure switch, over to the outside of the radiator filler neck. Those will fail with age and not have a wide enough operating range to let the system vary in pressure, from high normal to low normal. Lowrider did that several years after its R-134 conversion. $35 to fix it. George