Quote:
Originally Posted by JacksonKotch
I actually had seen that thread! When I pulled my thermostat out I checked that passage with a thin straight pick. At the right angle I could get the pick to pass thru the passage, so I'm assuming it's fine. Although, if the thermostat doesn't solve it, then I will remove the housing and try to inspect it more thoroughly.
Is that true that the bleed passage is 85 only? Very interesting. Didn't realize the '85 uniqueness was also in the cooling system.
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I have that bleed passage in my '83 240D. I'm going through all the same gyrations you are. Flushed like madness, latest was Thermocure for a week in there. Parts cannon loaded and shot. At least 5 different thermostats, the water pot tests, so on and so forth. I'm leaning towards the dash gauge at this point (on mine). I caught it dropping to 80°C and parking there for a few seconds once, and then it "ticked" right back up to about 95°C. Stories of bad solder joints and bad grounds on the cluster side of things. Might be worth investigating.