Not related. HVAC sounds like KLIMA relay or push button unit. If your tachometer also died, then the OVP relay would be suspect. -- Max Dillon Charleston SC '87 300TD '95 E300
On March 21, 2017 5:55:29 PM EDT, Dan Penoff via Mercedes <mercedes@okiebenz.com> wrote: >The 350SDL started acting weird this morning…. > >No glow plug light when I went to start it up, or if it did come on it >was only for a few seconds and I missed it. Ambient was maybe 50F, >possibly a little warmer. About 5-10 minutes later as I’m driving down >the street, the glow plug light comes on and stays on for a short time, >then goes off. > >Weird. > >At lunch I went out and the light lit for maybe 5-10 seconds and went >out. Again, it came on while I was driving a few minutes later for a >short time and then went out. > >Same thing on the drive home today. > >As I look at the service manual, it says that one of the fault >indicators is no preglow lamp at startup, then the light can light up >for approximately one minute while driving. Fault: One or more glow >plugs defective. > >So I’m wondering if I’ve got a bad glow plug. I just swapped them all >out less than 10k ago, probably even less than that. > >But - there’s more… > >The AC started acting up. Hot air, literally HOT air coming out of the >vents. I checked the monovalve, it’s good. Checked the AC system, >everything is good there as far as pressures and charge, but the low >pressure line is not cold. High pressure is. > >I put a clamp on the coolant line to the cabin to isolate the heater >and drove the car. I can get duct temps down to about 70F and that’s >it. Pressures are correct for the ambient temperature and humidity. > >It’s almost like I was getting heat during cooling, but I’m not getting >decent output from the system to begin with. > >Both of these issues started at the same time. I can’t see how they’re >related. > >??? > >-D > > >_______________________________________ >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
