S-Class (W126) 1979-1991: 300 SE, 300 SEL, 380 SE, 380 SEL, 420 SEL, 500 SEL, 560 SEL, 360 SEC, 500 SEC, 580 SEC, 300 SD TURBODIESEL, 300 SDL TURBO, 350 SD TURBO, 350 SDL TURBO

300SD ALDA Adjust, Acceleration Restored

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Old 09-27-2004, 12:22 AM
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99 E300 TD, F350&ExcurDiesels
Thumbs up 300SD ALDA Adjust, Acceleration Restored

All:

For 300SD newbies - After troubleshooting the typical 300SD "slugmobile" no acceleration problem on one of our low mileage sedans by checking/cleaning all the ALDA lines/banjo fittings, and switchover switch, and changing both fuel filters, with no performance improvement...

...I adjusted the ALDA 3/4 turn CCW (after removing the no-tamper cap and loosening the lock nut of course). On our 83 & 84 300SDs the ALDA is located on driver's side of engine above the fuel injection pump.

Success!!! What a huge difference in acceleration/performance!!!

DRG
Old 09-27-2004, 05:15 PM
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Thats very cool! There also might have been a recal on that in 93, check out line 71, the dealer may replace that for you with a modified one, don't know thou...thats pretty cool thou!

http://www.alldata.com/TSB/35/85352004.html

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