Mercedes Benz repair: Engine continues to run after switching off, boost gauge, boost controller

Question
Mercedes 1992 300SD. The engine won't stop after ignition switch is turned off.

Answer
These links should answer your questions.

Run away diesel, why does it happen?
http://www.mercedesshop.com/shopforum/showthread.php?p=824840#post824840

Motor keeps running
http://www.mercedesshop.com/shopforum/showthread.php?p=80108#post80108

Boost Gauge
http://www.mercedesshop.com/shopforum/showthread.php?t=140769

ALDA cap - how to remove?
http://www.mercedesshop.com/shopforum/showthread.php?p=704038#post704038

Tweaking ALDA...
http://www.mercedesshop.com/shopforum/showthread.php?p=1023509#post1023509

14.9mpg in my SDL, no, the math is right...and the odometer works too...
http://www.mercedesshop.com/shopforum/showthread.php?p=790743#post790743

performance problems (85 300D turbo)
http://www.mercedesshop.com/shopforum/showthread.php?p=128721#post128721

New to forum, couple of 300sd questions.
http://www.mercedesshop.com/shopforum/showthread.php?p=733201#post733201

Boost controller.....
http://www.mercedesshop.com/shopforum/showthread.php?p=451517#post451517

OM603 ALDA removal instructions
http://www.mercedesshop.com/shopforum/showthread.php?p=431887#post431887

What makes a diesel motor 'peppy'?
http://www.mercedesshop.com/shopforum/showthread.php?p=462139#post462139

86 300SDL Old/New Trick?
http://www.mercedesshop.com/shopforum/showthread.php?t=141033

ALDA R&R disassembly, cleaning.
http://www.mercedesshop.com/shopforum/showthread.php?p=777546#post777546

ALDA: How can you tell if it's good for sure?
http://www.mercedesshop.com/shopforum/showthread.php?t=141684

Injector testing
http://www.mercedesshop.com/shopforum/showthread.php?t=131328

Injector R&R thread.
http://www.mercedesshop.com/shopforum/showthread.php?t=86332&highlight=DIY

I installed my new Injectors and now I need help.... PICS
http://www.mercedesshop.com/shopforum/showthread.php?p=638976#post638976

OM 603 Injector heat shields
http://www.mercedesshop.com/shopforum/showthread.php?p=622159#post622159

Leak near injectors - '85 300D T
http://www.mercedesshop.com/shopforum/showthread.php?p=721444#post721444

VW Injector similar to MB?
http://www.mercedesshop.com/shopforum/showthread.php?t=140873

What should the TOURQUE be on Injectors ?
http://www.mercedesshop.com/shopforum/showthread.php?p=637488#post637488

Banjo Bolt
http://www.mercedesshop.com/shopforum/showthread.php?p=733935&posted=1#post73393...

Here's my payback! Diesel Primer Pump Replacement
http://www.mercedesshop.com/shopforum/showthread.php?t=109076

OM616/617 Injection Pump.
How to adjust the Naturaly Aspirated Injection Pump.
http://www.mercedesshop.com/shopforum/showthread.php?t=99944&highlight=617+drip+...

OM 617 Injection Timing
http://diymbrepair.com/easley/iptiming.htm

OM617 IP, oil leak from fuel pump gasket
http://www.mercedesshop.com/shopforum/showthread.php?t=141338

Fuel injection pump diagrams?
http://www.mercedesshop.com/shopforum/showthread.php?t=141323

Specialized Indicator for IP Timing
http://www.mercedesshop.com/shopforum/showthread.php?t=139170

The Big Timing Chain Question
http://www.mercedesshop.com/shopforum/showthread.php?p=641866#post641866

Timing everything! Cam timing that is...
http://www.mercedesshop.com/shopforum/showthread.php?p=456052#post456052

617 IP Full Load Stop Adjustment Procedure
http://www.mercedesshop.com/shopforum/showthread.php?t=125766

wont start for anything!
http://www.mercedesshop.com/shopforum/showthread.php?t=104222&page=41&pp=20