On our trip to the Brickyard the other weekend, my brother's 300SDL showed all the typical symptoms of a broken hose or failed sampler motor for the temp control -- it would get freezing cold, even though I was bumping the temp dial up, then the heat would come on for a while, then the temp would start to drop again, getting very cold, then the heat would come on, etc.

I'm pretty sure everything is mosly OK (no freon this summer, I recharged it becuase it held a decent vac), but I don't know where the sampler motor is to check it!

Thanks guys

Peter

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1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!