BenzWorld Junior Member
Date registered: Jul 2010
Vehicle: 82 300D
Location: Cape Cod
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Last month I bought an 82 300D that had sat in a feild for about two years, at the time it had a dead battery, frozen brakes, a very lumpy idle and would not shut down without using the manual shut-off on the throttle linkage. The previous owner told me that the climate control would blow its fuse with the a.c. belt in place, so he removed the belt; he claimed the defroster and heat still worked fine with the belt removed.
I have since washed all of the black gweege from the engine bay, freed the brakes,replaced pads in all four corners, new rotors and wheel-bearings up front, resurfaced the rear rotors, replaced a leaking fuel line at the fuel tank, replaced the fuel primer pump (old one leaked externally), replaced the fuel filters, sealed a leaking banjo fitting on the f.i. pump. and have turned up the idle speed at the f.i.pump, checked the rack dampener bolt (tuned all the way in. I put a hand vacuum pump to the the f.i. pump shut-off dingus and
the motor shuts right off, if I turn the key off the motor dives into a lumpy idle as if its trying to do its job; I think I may have turned the idle speed up so high that the shutoff cant work. is this possible? Also the a.c.c. unit seems to do nothing, no fan, no heat ,no defrost, no nothing. I have the driver side knee bolster off and can see that the vacuum tubes to and from the ign. switch are intact but there is one black vacuum tube about 8 inches into the firewall that has been orphaned, I have no idea where it goes nor do I see anything disconected. Is that tube why the a.c.c. does nothing an any position or combination? And/or is this diconected tube contributing to the no key shut-down issue. The door locks are kind of intermittent too , if that helps; how can I isolate the lock system?
Sorry about the long post I have been searching , but have found a little more than fragmented information on theese issues. thanks in advance.
Last edited by Grif900; 09-20-2010 at 09:38 PM.