1991 350SDL - Just wondering what acceleration rate others are getting. It takes 18 seconds to reach 60 mph at full throttle. Has anyone else checked theirs?

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1991 350SDL 350k+ miles

Has the previous owner swapped in a 240D engine?

that seems really slow for that motor...

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1981 NA 300D 310k miles

That's definitely too slow. You should be able to do something around 12 seconds... the 240D did 0-60 in 19 seconds out of the factory, and that was with 67 HP !

Have you checked your filters?

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"Senior Luna, your sense of humor is still loco... but we love it, anyway." -rickymay ____ "Your sense of humor is still loco... " -MBeige ____ "Señor Luna, your sense of humor is quite järjetön" -Delibes

1982 300SD -- 211k, Texas car, tranny issues ____ 1979 240D 4-speed 234k -- turbo and tuned IP, third world taxi hot rod

2 Samuel 12:13: "David said to Nathan, “I have sinned against the Lord.” And Nathan said to David, “The Lord also has put away your sin; you shall not die."

Agree; something like 12 seconds.

Remove the ALDA and try it again.

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CENSORED due to not family friendly words

It comes off the line very fast, then stays in second and third gear too long before shifting. zero to 30 comes really quick, then between 30 and 60 is not quick to come. Thanks, I will adjust or remove the ALDA and try again.

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1991 350SDL 350k+ miles

Staying in gear "too long" generally is a good thing, most peoples 722.3 acceleration issue is they stack shifts and get into 3rd way too quickly and you're tugging your way through third not getting much done.

3.5s have a lower redline than 3.0s, does it shift around 4,200 rpms? That's when it should shift.

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68 280SL - 70 280SL - 70 300SEL 3.5 - 72 350SL - 72 280SEL 4.5 - 72 220 - 72 220D - 73 450SL - 84 230GE - 87 200TD - 90 190E 2.0 - 03 G500

Nissan GTR - Nissan Skyline GTS25T - Toyota GTFour - Rover Mini - Toyota Land Cruiser HJ60 - Cadillac Eldorado - BMW E30 - BMW 135i

It shifts at 3800 rpms. Get's about zero to 50 in 12 seconds, then another 6 to get the other 10 mph. I will adjust the ALDA and report back.

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1991 350SDL 350k+ miles

Sorry to take so long to post back the results. I found a leak in the vacuum line going to the ALDA. Ran it once and it took 13 seconds. I'm happy with that.

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1991 350SDL 350k+ miles

Soundsin the ball park though a few small improvements might shave a second off, if that is important to you.

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Strelnik
Invest in America: Buy a Congressman!

1950 170SD
1951 Citroen 11BN
1953 Citroen 11BNF limo
1953 220a project
1959 180D
1960 190D
1960 Borgward Isabella TS 2dr
1983 240D daily driver
1983 380SL
1990 350SDL daily driver alt
3 x Citroen DS21M, down from 5
3 x Citroen 2CV, down from 6

I'm very happy with the performance I now have. I never run it that hard.

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1991 350SDL 350k+ miles

How many American-made cars will even go 60mph after 335,000 miles and 24 years?

11.4 sec according to the factory.

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CENSORED due to not family friendly words

If the car does not perform to factory standards by a long shot - as you had beginning the thread- the first suspects are out of adjustment/broken mechanical items and things you maintain. Change/check all filters and fluids. Check/adjust all throttle linkage and transmission settings. Check the brakes and tire air pressure. Don't start modifying the cars engine because it does not work as designed if it's not able to do so because it needs fresh fluids/filters and a "tune up".
Sounds like your inspection found the tune up item which was needing attention that solved the problem.