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  #1  
Old 04-24-2006, 10:07 AM
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Join Date: Apr 2003
Location: Phoenix Arizona. Ex Durban R.S.A.
Posts: 2,731
Temperature too low?

81 240D. In the week I've been driving my "new" 240D, I've noticed the temperature never rises more than slightly above 80C. On my 30 minute drive in to work this morning, ambient temperature 57F/14C, at no stage did the temperature rise above 65C. Obviously the gauge might be reading low but I'm just wondering if other's have similiar experiences with 240D's?

- Peter.
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81 240D stick. 316000 miles at purchase. 334000 now
2000 GMC Sonoma
Formerly...
2002 Kia Rio. Worst crap on four wheels
1981 240D 4spd stick. 389000 miles. Deceased Jan 08
1984 123 200
1979 116 280S
1972 Cadillac Sedan DeVille
1971 108 280S
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  #2  
Old 04-24-2006, 10:15 AM
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Join Date: Oct 2005
Posts: 4,263
80C is just fine. 65C is not. Suspect the thermostat.
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  #3  
Old 04-24-2006, 11:54 AM
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Join Date: Aug 2001
Location: Evansville, Indiana
Posts: 8,150
Thermostat is incorrect or bad, almost without doubt. You need it to stay just above 80C for best effeciency.

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!
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  #4  
Old 04-24-2006, 12:09 PM
Cabernet red, actually
 
Join Date: Jan 2006
Location: Willamette Valley, OR
Posts: 503
My car used to run at about 60. I replaced the T-stat, now it's 90. A t-stat only costs about $20 and it will more than likely solve your problem.
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Ralph

1985 300D Turbo, CA model
248,650 miles and counting...
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  #5  
Old 04-24-2006, 01:06 PM
Registered Diesel Burner
 
Join Date: Aug 2001
Location: Northern Virginia
Posts: 2,911
Be sure to research here and read about getting the correct brand of replacement thermostat. There are brand(s) with bad production runs.

Ken300D
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1982 300D at 351K miles
1984 300SD at 217K miles
1987 300D at 370K miles
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