Hey Larry hope your doing well. I talked with Wilton the other day, he and his wife are doing well.
I think Curly finally replaced the t-stat as well as some other stuff, he should update us again. Max Dillon Charleston SC Apr 9, 2020 2:24:11 PM Larry Turner via Mercedes <mercedes@okiebenz.com>: > Hello All - > Back when I had the car, I replaced the Rad when the upper nozzle broke. At > that time I cleaned between the rad & the condensor so that should still be > clean. > > One thing about the T'Stat - 1st one I bought was right catalog # but it was > too small (or vice versa) so I got the right one and all was well. That > doesn't mean it didn't fail soon after I started using it. I also put a new > Fan Clutch on. But at one point, I had cooling issues and I replaced > everything assoc w/the cooling - at least the front of engine components. > > I also noticed the Aux fans only seemed to run when the AC was on - I thought > that might be the way it was supposed to run. IAC, as Curley found, when AC > is on the Aux fans work and Temp is not a problem. > > Hopefully, by now Curley has found / fixed the problem. > > I hope everyone is staying healthy in these times... > > LarryT > '06 E350 (which may a new the Conductor Plate) > > On 3/14/2020 8:51 AM, Meade Dillon via Mercedes wrote: > > > Curley, I've got three of these cars, '87 with OM603 and two '95's with > > OM606NA. None of them need the aux fan running in the summer heat, unless > > the AC is running or I'm carrying a big load or running fast on the highway > > up hill and then suddenly slow down. > > > > Just driving around town at 75 deg F, with no AC running, the car should > > not need the aux fans running. > > > > I disagree, you've got evidence that the t-stat is failed. They can fail > > right out of the box! > > > > In your place, I would remove the front bumper and the fan shroud and clean > > out the leaves and bugs between shroud and condenser, pull the radiator and > > clean between radiator and condenser, spray your garden hose through both > > while you have it all apart, and then pull the t-stat and check it for > > function. > > > > Here are the specs from MB: > > > > OM601, 602.91, 603.91: begin opening @ 85 +/-2 deg C, minimum stroke 8mm @ > > 94 deg C > > > > If the AC refrigerant has leaked down, then only the high speed function of > > the aux fans will work. > > ------------- > > Max > > Charleston SC > > > > > > On Fri, Mar 13, 2020 at 11:38 PM Curley McLain via Mercedes < > > mercedes@okiebenz.com> wrote: > > > > > > > because the problem is not the thermostat. On this one, the radiator is > > > blocked by a shroud, except for where the 2 fans are. I'm guessing that > > > is to keep bugs out of the radiator. So without the fans running, it > > > runs too hot. when the fans run it is fine. Larry put a new > > > thermostat in it not that long ago. If I had evidence of a thermostat > > > problem I would change it. so far it is quite clear: Fans running, no > > > overheat. Fans not running, overheating. With the sensor on top of > > > the engine plugged in, the fans never run. THat is a problem. When > > > that sensor is unplugged, the fans are intermittent. > > > > > > If the R134a has leaked out, would the low pressure switch cause the > > > fans not to run? Seems to me that the fans should be independent of > > > the a/c, but obviously they are linked at the drier. Fans should run > > > when the A/c is off. > > > > > > > > > > > _______________________________________ > > 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 > > _______________________________________ 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
