SD> Air Conditioning
Hello All, I have an air conditioning question: I converted over to R-134A in my 1991 Dodge Spirit R/T. It seems to work great at idle. However, whether I'm moving or not, when the revs come up over 2000 RPM, the A/C doesn't work very well at all. Actually, if I'm cruising in 5th gear with low RPM (1500 or less) the A/C works well at that point too. It only acts up when the revs increase. I initially checked the system pressure and the gauge indicated that the pressure was in the "good" range while the A/C was running at maximum at idle. However, when the revs come up, the AC clutch engages for less than 2 seconds on a somewhat infrequent basis and the pressure drops to "low" on the gauge. I thought I might have too little refrigerant in the system so I added more R-134A so the pressure would be higher when the revs come up, but the load was much on the compressor that I backed the pressure back down. Any thoughts? Please respond to: [EMAIL PROTECTED] Thanks, Craig ---REMOVE-FOOTER-WHEN-REPLYING Questions? Visit http://www.sdml.org/ To be removed, visit http://www.sdml.org/pages/leave.html
Re: SD> Air Conditioning
checking ONLY the low side is pointless. ALWAYS check with the high side too. Chances are you orifice tube is shot and full of crap, or worse, your condensor. There's a few great AC forums out there...google! On 8/3/05, Craig Grass <[EMAIL PROTECTED]> wrote: > Hello All, > > I have an air conditioning question: > > I converted over to R-134A in my 1991 Dodge Spirit R/T. It seems to work > great at idle. However, whether I'm moving or not, when the revs come up > over 2000 RPM, the A/C doesn't work very well at all. > > Actually, if I'm cruising in 5th gear with low RPM (1500 or less) the A/C > works well at that point too. It only acts up when the revs increase. > > I initially checked the system pressure and the gauge indicated that the > pressure was in the "good" range while the A/C was running at maximum at > idle. However, when the revs come up, the AC clutch engages for less than 2 > seconds on a somewhat infrequent basis and the pressure drops to "low" on > the gauge. > > I thought I might have too little refrigerant in the system so I added more > R-134A so the pressure would be higher when the revs come up, but the load > was much on the compressor that I backed the pressure back down. > > Any thoughts? > > Please respond to: [EMAIL PROTECTED] > > Thanks, > > Craig > > ---REMOVE-FOOTER-WHEN-REPLYING > Questions? Visit http://www.sdml.org/ > > To be removed, visit http://www.sdml.org/pages/leave.html ---REMOVE-FOOTER-WHEN-REPLYING Questions? Visit http://www.sdml.org/ To be removed, visit http://www.sdml.org/pages/leave.html
Re: SD> Air Conditioning
TD's don't have orifice tubes. They have expansion blocks. And yeah, I bet his is stuck or clogged. But yeah, he does need to put gauges on both sides. On 8/3/05, Eric . <[EMAIL PROTECTED]> wrote: > checking ONLY the low side is pointless. ALWAYS check with the high > side too. Chances are you orifice tube is shot and full of crap, or > worse, your condensor. > There's a few great AC forums out there...google! > > On 8/3/05, Craig Grass <[EMAIL PROTECTED]> wrote: > > Hello All, > > > > I have an air conditioning question: > > > > I converted over to R-134A in my 1991 Dodge Spirit R/T. It seems to work > > great at idle. However, whether I'm moving or not, when the revs come up > > over 2000 RPM, the A/C doesn't work very well at all. > > > > Actually, if I'm cruising in 5th gear with low RPM (1500 or less) the A/C > > works well at that point too. It only acts up when the revs increase. > > > > I initially checked the system pressure and the gauge indicated that the > > pressure was in the "good" range while the A/C was running at maximum at > > idle. However, when the revs come up, the AC clutch engages for less than 2 > > seconds on a somewhat infrequent basis and the pressure drops to "low" on > > the gauge. > > > > I thought I might have too little refrigerant in the system so I added more > > R-134A so the pressure would be higher when the revs come up, but the load > > was much on the compressor that I backed the pressure back down. > > > > Any thoughts? > > > > Please respond to: [EMAIL PROTECTED] > > > > Thanks, > > > > Craig > > > > ---REMOVE-FOOTER-WHEN-REPLYING > > Questions? Visit http://www.sdml.org/ > > > > To be removed, visit http://www.sdml.org/pages/leave.html > > ---REMOVE-FOOTER-WHEN-REPLYING > Questions? Visit http://www.sdml.org/ > > To be removed, visit http://www.sdml.org/pages/leave.html > -- Brian J. Schulteis Bremerton, Washington '83 Shelby Charger (Megasquirt MPFI) '87 Shelby GLHS #895 '88 Daytona Pacifica (Intercooled 2.5L daily driver) '90 Plymouth Horizon (soon to be little sister's car) ---REMOVE-FOOTER-WHEN-REPLYING Questions? Visit http://www.sdml.org/ To be removed, visit http://www.sdml.org/pages/leave.html
