Yes, question them, they are really just a guide. I agree that these center vent temps from the chart I posted are hooky.
When I bought my first AC gauge it came with a chart, and it largely agrees with the car-specific charts for my Mercedes and our Infiniti. -- Max Dillon Charleston SC '95 E300 '87 300TD OK Don <okd...@gmail.com> wrote: Interesting! How would one know which R134a charts are right? Any way, from this chart, my pressures are low, but the center vent temp is about right. However, the ML's center vent temp is much lower. Makes one question ALL the charts! For vehicles currently running with freon R-134a only Outside-----low side-------High side------Center vent temp 100 F -----40-50 psi ---200-250 psi ----52-60 F 110 F -----50-60 psi ---250-300 psi ----68-74 F On Sun, Jul 29, 2012 at 6:11 PM, Max Dillon <meadedil...@bellsouth.net>wrote: > Those are the wrong charts. > > Either you've got a leak and lost some of the charge, or your compressor > is about dead. > > > http://m.instructables.com/id/How-to-Repair-Automotive-AC/step1/freon-check/ > > From this site, looks to me like you should try adding some more > refrigerant. > -- > Max Dillon > Charleston SC > '95 E300 > '87 300TD > > OK Don <okd...@gmail.com> wrote: > > The chart at http://dodgeram.org/tech/repair/HVAC/R134a.htm says 135 psi. > ? > ? ? ? > > The calculator here says 134 - > http://www.csgnetwork.com/r134apresstempconv.html > > My pressure is higher ? ? ? ? > > On Sun, Jul 29, 2012 at 4:03 PM, OK Don <okd...@gmail.com> wrote: > > > So, add more R134a? > > > > > > On Sun, Jul 29, 2012 at 4:00 PM, Russ Williams <rawil...@eatel.net> > wrote: > > > >> High side should be in the 240 psi range for that OAT. > >> 104(OAT)x2+32 > >> > >> Russ W. > >> > >> On 7/29/2012 15:14, OK Don wrote: > >> > >>> The van is not blowing "ICE COLD AIR". It's blowing 68F, not cold. It > was > >>> COLD when it was new in 1997.I hooked up the guages, and read low side > >>> of 28 and high of 160 at 1600-2000 RPM. Does it need more refrigerant, > >>> have > >>> too much, or is something else wrong? Ambient temp is 104F. > >>> Also, after some time on the road, 20-30 minutes, when you shut down > the > >>> car, we hear gurgling or boiling sounds from the evaporator area. What > is > >>> it trying to tell me? > >>> > >>> > >> > >> > >>_____________________________________________ > **_________ > >> http://www.okiebenz.com > >> For new and used parts go to www.okiebenz.com > >> To search list archives http://www.okiebenz.com/**archive/<; > http://www.okiebenz.com/archive/>;; > >> > >> To Unsubscribe or change delivery options go to: > >> http://mail.okiebenz.com/**mailman/listinfo/mercedes_**okiebenz.com<; > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com>;; > >> > > > > > > > > -- > > OK Don > > 2001 ML320 > > 2012 Passat TDI DSG > > 1997 Plymouth Grand Voyager > > > > > > > -- > OK Don > 2001 ML320 > 2012 Passat TDI DSG > 1997 Plymouth Grand Voyager >_____________________________________________ > > http://www.okiebenz.com > For new and used parts go to www.okiebenz.com > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > >_____________________________________________ > http://www.okiebenz.com > For new and used parts go to www.okiebenz.com > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > -- OK Don 2001 ML320 2012 Passat TDI DSG 1997 Plymouth Grand Voyager _____________________________________________ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com _______________________________________ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
