What do the pressures look like when you run battery voltage directly to the fan? will try that tomorrow, but as soon as i turn the ac on, pressures go instantly to 130 or more on low side and 400 or more on high side and pulls the engine down. the high side line gets hotter the heck in less than 5...

no nothing has been done. has been operating ok all sumer untill yesterday

i have a 2006 mercury grand marquis. ac has been working fine. yesteday while at idle and the compressor kicked on rpm droped 1000 rpm, this has not been the normal opperation. also engine cooling fan not coming on. ac comprssor kicking on and off every 5 seconds or so. installed gauges, with compre...