It has something to do with egr iirc Sent from my iPhone
> On Feb 23, 2017, at 8:18 AM, Dan--- via Mercedes <mercedes@okiebenz.com> > wrote: > > Actually yesterday's... > > Was still pretty pooped from a full day of work and turning in late the night > before, so I figured I would do some low impact stuff on the car last night. > > So I changed the oil and filter, replaced a leaky monovalve insert and > removed some sort of strange kludge that was on the AC wiring. > > I forgot what a PITA changing oil on an M103 is, that is, how messy it can be > with the inverted filter. Normally I would punch a hole in the top so it can > drain down while the oil extractor is doing its thing, but there was an > aftermarket (STP) filter on it and I didn't want to booger it up before I was > sure I could remove it. > > Naturally, some ham-handed ape installed the filter, meaning it was far more > than hand tight. Fortunately I have a set of the "caps" that fit the ends of > spin on filters. That allowed me to remove the filter with some effort, but > not avoid the oil bath that comes out when the filter is removed. Grrr. > > The ACC made full heat unless you had the temperature dial on the maximum > cold detent, so I was pretty sure the monovalve was bad. Surprisingly, it > wasn't torn or damaged that I could find, but there was some coolant behind > the diaphragm so I changed it anyway. A short run afterwards yielded no heat > on normal temp settings. Good. > > The wiring around the AC accumulator was all weird and there was a Bosch > relay tie wrapped to a support. It wasn't clear what was being accomplished > by all of this, but it looked like they were bypassing the low pressure > switch or something to that effect. I wasn't going to mess with trying to > sort it out, so it got removed. They didn't cut any wires, just used crimps > to do the connections, so I was able to remove it all without having to > rewire anything. The original connectors were still in place so everything > went back to where it belonged. > > They got B+ by tapping the aux cooling fans strip fuse, so that got > disconnected and the terminals cleaned and strip fuse replaced. I'll sort > the AC out down the road, but I'm suspecting there's another compressor > reseal in my future. > > One thing I noticed that I haven't seen before: What appears to be the KLIMA > relay has a big black knob on top of it with a "1" and "0". Anyone have any > idea what this might be? I'll post a picture of it tonight if I get a chance. > > -D > > Sent from my iPad > > _______________________________________ > 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
