240-D No take off power - Mercedes-Benz Forum

 
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post #1 of 6 (permalink) Old 10-13-2004, 06:25 PM Thread Starter
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240-D No take off power

I have recently taken over a 1979 240-D, the car looks awesome inside and out, my problem is when I pull away from a traffic light, I have no take off power. Also, if I take the car on the Interstate or if I get above 50 mph the rpm's are really high, kinda like its not shifting to high gear. Can someone please help?
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post #2 of 6 (permalink) Old 10-13-2004, 06:36 PM
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RE: 240-D No take off power

tis a beauty.

get used to those problems. it's an old diesel and acceleration shouldn't be that great. On the other problem: if my assumption that you have an auto transmission is correct, then your rpm's at high speeds should seem higher than normal; just the way they're built.
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post #3 of 6 (permalink) Old 10-13-2004, 07:35 PM
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RE: 240-D No take off power

Assuming its a 4 speed auto you may be starting from a light in 2nd gear. You can trick the tranny into first, but you will need to do a search to find exactly how. Something like shifting down from D then back to D before you start to accelerate (or something like that). If you are in D final gear on the highway then thats pretty much it short or a diff (axle)ratio change. Could put a little taller tire on to lower your high speed revs but that will hurt your off the line acceleration.
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post #4 of 6 (permalink) Old 10-14-2004, 03:40 PM
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RE: 240-D No take off power

Your car seems normal from what you describe. High rpm's at 50mph (even up to 3000rpm) is normal since this a diesel. Post more at the W123 forum.

She's a beauty, the slower acceleration is for others to admire the car more [;)]


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post #5 of 6 (permalink) Old 08-25-2006, 01:22 PM
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No take off power

I drive a 1981 240-D with 157k miles; I fuel it with home-brew biodiesel with excellent results. Everything you mention aout your car is typical. It is just the nature of the beast. I think the high rpms at highway speed was the thing which got my attention soon after acquiring this car. As for slow acceleration--I just need to be aware to build up momentum before a hill climb and stay oward the right!

Enjoy!
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post #6 of 6 (permalink) Old 08-25-2006, 02:23 PM
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I couldn't believe the topic of this thread. It made me laugh so much I had to read it. I recently just picked up a 77 240D. I enjoy the sluggishness of it. I also love how loud the car is. It's a "man's" car. for sure.
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