Are different oils used with R134a systems? If so, which does Mercedes use?
-Dave Walton On Jul 29, 2012, at 7:38 PM, 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
