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#1
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1972 merz 250 C
I just bought my 250 C and after anxiously waiting 3 weeks for it to arrive (the transport was a hit and run - their new Vlovo spent 2 weeks in the body shop, I was nervous my car had been stolen...), I'm rushing to get it inspected and tagged, the throttle linkage was frozen in a near 3/4 throttle, could not get into gear at the rpm's, have gotten it moving but the throttle springs are weak, the result is I can drive accelerating fine but have to use my foot constantly to pull the accelerator up so I can slow down or stop, A hair - raising drive!
My other problem, the turn signal blinker and the hazard flashers will not work, since neither are working, and the fuse appears unbroken, "is" there a relay that controls this? and Where, is it? My Mercedes dealer hasn't located it, shows relays with no indication of what they are, any ideas? I can't wait to throw the sliding roof open and take a relaxing drive! DJ |
#2
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The hazzard switch doubles as the flasher. Like an american car, it won't flash if some of the bulbs are dead. Start diagnosing it by checking for voltage at the tail lights and front markers. From there the multi-purpose switch and the flasher. You'll need the pin-out information for both.
As for the throttle issues, you have (or should have) a pair of zenith carbs under the hood. Though webber conversions are not unheard of. To get a flavor of what you're in for (it's not that bad; just a spirited challenge), search the archives here for the word zenith. Most importantly, call 1-800-for-merc, which is a Daimler-Benz hotline number and ask for the service CD for your car. It's going to be about 30$. It will help answer the next wave of questions too. -CTH PS. Welcome to the group. You'll find dozens of us with the same car. |
#3
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Check the throttle linkage at the firewall. I believe there may be a spring located there. I may be wrong, my 114 is in storage and I have not looked at it for quite some time, but I seem to recall that other spring. The carb springs are rather small and light weight. The linkage itself is fairly heavy between the foot pedal and carbs, so the other spring is added. Yours may be missing in action.
230/8 |
#4
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Also at the throttle linkage on the fire wall are 2 blocks supporting the linkage. They can become dry and cause the throttle to bind. Use some good penetrant and work the linkage. You should disconnect the carbs from the linkage while doing this to avoid flooding.
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#5
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W114 flashers.....
.....are part of the switch. The pull/push switch in the console (round knob) that controls the 4 way flashers also contains the relay that operates the turn signals.
Good luck, sometimes mechanical agitation and a shot of electrical cleaner will get them working, also replace your fuses if they are not recent. A fuse can look ok, but not pass current if it is old. Not an inexpensive part, and it seems that they have a fair degree of failure, so finding one in a junk car is still a dicey proposition. For the linkage, clean each ball and socket joint, then lube with automatic transmission fluid. I ended up adding another return spring on my 250C to get the snap back action I wanted. Jim
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14 E250 BlueTEC black. 45k miles 95 E320 Cabriolet Emerald green 66k miles 94 E320 Cabriolet Emerald green 152k miles 85 300TD 4 spd man, euro bumpers and lights, 15" Pentas dark blue 274k miles |
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