ac low side pressure??? - Taurus Car Club of America : Ford Taurus Forum

vega43 · 07-17-2010, 10:53 AM

2005......what should the low side pressure be. right now it reads 50....and when the fan comes on it drops to 40.....fan off, back up to 50. outide temp 85-90.

AlexKlm · 07-17-2010, 04:54 PM

With such ambient temperature, static pressure (with engine not running) should be much higher (around 90-100 psi, in accordance with pressure chart). If gauge shows static pressure 50 psi with ambient temp 90, it means that amount of refrigerant is low (or gauge is broken).

When cycling, pressure range changes between 21 and 45 psi.

07-17-2010, 10:53 AM	#1 (permalink)
vega43 Junior Member Member Number: 27630 Join Date: Apr 2010 Visit: My Garage Posts: 2 Trader Score: 0 reviews Rep Power: 0	ac low side pressure??? 2005......what should the low side pressure be. right now it reads 50....and when the fan comes on it drops to 40.....fan off, back up to 50. outide temp 85-90.

07-17-2010, 04:54 PM	#2 (permalink)
AlexKlm Junior Member Member Number: 20125 Join Date: Jun 2009 Drives: Ford Taurus 93 GL 3.0 Visit: My Garage Posts: 56 Trader Score: 0 reviews Rep Power: 0	Some numbers With such ambient temperature, static pressure (with engine not running) should be much higher (around 90-100 psi, in accordance with pressure chart). If gauge shows static pressure 50 psi with ambient temp 90, it means that amount of refrigerant is low (or gauge is broken). When cycling, pressure range changes between 21 and 45 psi.

Remove Advertisements Sponsored Links
Ford Taurus Forum Advertisement