Well problem not solved. It is current 74 and when driving down the highway it after about 10 minutes the fog starts followed by snow flakes then freezing up. It literally feels like sitting in front of a deep freeze. Compressor still appears to not be cycling. Is there a way I can test the evap temp sensor? Maybe the wiring repair was not successful so maybe I can test it at the connector to see. Otherwise would it be something in the relay or the pbu that is not cycling the compressor? I suppose I can also recover the refrigerant and charge it again but I do not think that is the problem. If a low charge was causing it to freeze up the evap sensor should be cutting the compressor off I would think.
Sent from my iPhone > On Sep 12, 2019, at 6:45 PM, Kaleb Striplin <ka...@striplin.net> wrote: > > I don’t think so but it’s possible. I would think the compressor should cycle > though. Anyway I think I found the problem. I took everything apart to > replace a squeaky blower motor. I had repaired some wires back behind the > battery that were mouse damaged. I noticed the wiring to the evap temp sensor > were chewed on. I could not tell if they were completely chewed but looked > bad so I repaired it. I’m betting that was the problem but will know tomorrow > when I drive it to Tulsa. > > Sent from my iPhone > >> On Sep 12, 2019, at 6:41 PM, OK Don via Mercedes <mercedes@okiebenz.com> >> wrote: >> >> Isn't that a sign of not enough gas? >> >> On Thu, Sep 12, 2019 at 2:33 PM Kaleb Striplin via Mercedes < >> mercedes@okiebenz.com> wrote: >> >>> So I replaced the manifold hose assembly, new drier, converted to 134 and >>> pulled vacuum for 1 hour before charging. AC blow great, super cold. Once >>> you are driving it blows ice cubes, literally. So after about 15-20 minutes >>> the evaporator is basically freezing up. You will start getting fog blowing >>> out the vents followed by snow, then loss of airflow. If I put it in ec >>> mode for a few minutes it thaws out then is fine again. This issue seems to >>> be the compressor is constantly running, it does not cycle off and on. The >>> PBU that was in the car had a programa rebuilt sticker and the snow flake >>> button did not turn the compressor on at all but the top button did that is >>> supposed to be for dehumify and runs compressor constantly. The snow flake >>> button is supposed to be normal mode that cycles compressor. I swapped in a >>> different PBU and the compressor kicks on with the snow flake button but >>> stays running all the time. Could this be something in the PBu? Or the >>> kooks relay? Or maybe a sensor? These 201 systems are a little different >>> from other systems MB used. >>> >>> Sent from my iPhone >>> >>> _______________________________________ >>> http://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 >> >> "Whenever you find yourself on the side of the majority, it is time to >> pause and reflect." Mark Twain >> >> "There are three kinds of men: The ones that learns by reading. The few who >> learn by observation. The rest of them have to pee on the electric fence >> for themselves." >> >> WILL ROGERS, *The Manly Wisdom of Will Rogers* >> 2013 F150, 18 mpg >> 2017 Subaru Legacy, 30 mpg >> 1957 C182A, 12 mpg - but at 150 mph! >> _______________________________________ >> http://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 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
