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#1
11-09-2006, 12:59 PM
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What are your RPM's at 30 mph?
My car only turns 1200 at 30mph and 1400 at 40 mph. This is the RPM reading to maintain this speed. If I accelerate of course they go up. This seems slow. Is my tranny shifting too soon or do I have a goofy tach? Or do your cars run about the same?
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 Muleears '07 E320 Bluetec 133K my DD '04 Jaguar XJ8 VDP, 34K '10 Hyundai Accent 60K Grocery Getter '02 VW Golf soon to be on the road again '97 E300 Diesel Son's DD '61 VERY tolerant wife Hampton Roads, VA USA Gone but not forgotten: '67 250S 95K '86 300SDL '87 300D Turbo, 364K! R.I.P. '98 E300 Turbodiesel, 213K '02 S420, 164K '01 Prius 138K 
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#3
11-09-2006, 05:07 PM
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Thats perfectly normal, that very same gear can carry the car to over 120mph, so obviously its going to be only just above idle at 30-40mph.
  Thats the beauty of diesels, they can chug along cruising at city speeds hundreds of rpm lower than a gas engine can. Makes them more efficient. Its where the extra *torque* comes into play. Diesels have a lot more of it available at lower rpms, a gas engine would sputter and die trying to move a car along at 1100-1200rpm/30-40mph.
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-diesel is not just a fuel, its a way of life-  '15 GLK250 Bluetec 118k - mine - (OC-123,800) '17 Metris(VITO!) - 37k - wifes (OC-41k) '09 Sprinter 3500 Winnebago View - 62k (OC - 67k) '13 ML350 Bluetec - 95k - dad's (OC-98k) '01 SL500 - 103k(km) - dad's (OC-110,000km) '16 E400 4matic Sedan - 148k - Brothers (OC-155k)
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#4
11-09-2006, 10:59 PM
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0
 Of course, it is 0 at 70 also..............
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Jimmy L. '05 Acura TL 6MT  2001 ML430 My Spare Gone: '95 E300 188K "Batmobile" Texas Unfriendly Black '85 300TD 235K "The Wagon" Texas Friendly White '80 240D 154K "China"  Scar engine installed'81 300TD 240K "Smash" '80 240D 230K "The Squash" '81 240D 293K"Scar" Rear ended harder than Elton John
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#5
11-10-2006, 01:40 AM
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If you mean your tach doesn't work, don't feel bad, my engine turns 0 rpms at any speed too.
And I wasted about $130 trying to make it work, never did. Oh well. 
__________________
-diesel is not just a fuel, its a way of life- '15 GLK250 Bluetec 118k - mine - (OC-123,800) '17 Metris(VITO!) - 37k - wifes (OC-41k) '09 Sprinter 3500 Winnebago View - 62k (OC - 67k) '13 ML350 Bluetec - 95k - dad's (OC-98k) '01 SL500 - 103k(km) - dad's (OC-110,000km) '16 E400 4matic Sedan - 148k - Brothers (OC-155k)
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