Yes on the line from the manifold to the IP -- this was the problem on the boy's 300SD. You might just have to clean it out where it exits the manifold -- if it is goobered up there is no signal to the IP and it gets out of whack, no accel, low top speed, etc. That also affected tranny shifts.
Also, check your fuel filters, I just did that on Brunnhilde, amazing difference on the low top speed, sluggish accel. --R LWB250 wrote: > I would go back and check the whole vacuum system in detail, especially the > modulating valve on the IP and the overboost line from the manifold. > > Your inability to get ful revs with the accelertor would have me looking at > linkage from the pedal to the IP, too. > > I think you've got multiple problems. Start with the vacuum system and > make sure it's 100% first. > > Dan > > > > andrew strasfogel <[EMAIL PROTECTED]> wrote: > A Seres of Unfortunate Events has culminated in her well looked-after '85 > 300CD being reduced to a sluggy nonturbo that can't even reach 25 mph. Here > is the progresion: > > 1) Car wouldn't shift beyond second gear. Dealer detected and replaced a > leaky oil cooler line (car was low on translmission fluid). Problem solved > - car now shifted beyond second gear. > 2) Two weeks later, she noticed it wouldn't go past 3500 rpm. I then > observed that the car wouldn't shift into FOURTH gear no matter what! It > wasn't clear whether this was a NEW problem or had been there since we got > the car back from the dealer. > 3) At about that time, she parked the car at the mall and the engine refused > to shut off! Neither of us was able to do so manually after 15 minutes of > fruitless attempts (even attempted to stop up the exhaust). When we gave up > and drove back home, the car had developed a case of slow speed sickness - > no turbo/no revs beyond 2000/incapable of going faster than 20 mph. :(( MB > roadside came and diagnosed and replaced a split vacuum line near the > firewall that solved the shutoff problem, but this did not solve > sluggishness issue. If I manually move the linkage I can get high revs, but > not with the foot throttle. The rod linkages are all intact. > > Ideas and (cheap) solutions gratefully accepted! > > Andrew > 1985 300CD > 1983 300TD > _______________________________________ > http://www.okiebenz.com > For new parts see official list sponsor: http://www.buymbparts.com/ > For used parts email [EMAIL PROTECTED] > > To Unsubscribe or change delivery options go to: > http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > > > --------------------------------- > Be a better friend, newshound, and know-it-all with Yahoo! Mobile. Try it > now. > _______________________________________ > http://www.okiebenz.com > For new parts see official list sponsor: http://www.buymbparts.com/ > For used parts email [EMAIL PROTECTED] > > To Unsubscribe or change delivery options go to: > http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > > _______________________________________ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
