Engine
Troubleshooting Diesel Engine Overheating
It could be a number of things causing the problem. Follow Kent's video series
W124
$39.50
124 Chassis Front Wheel Bearing Kit
Fits 260E 300E 300TE 300CE 300D 300TD E320 E300D 1986 to 1995 - NOT 4-MATIC -- ALSO FITS 107 560SL
Suspension
Diagnosing Strange Front End Rumbling Noises
Suspect front wheel bearings
$52.75
Later 60x Aluminum Head Diesel Injection Pump Shutoff Valve
201 190D 2.5 - 1986 to 1991 300D 300TD 300SDL 350SD 350SDL - 1990 to 1993 300D 2.5
Brake
ABS Brake System Malfunction - ABS Light On
Some simple maintenance could help to solve the problem
Electrical
201 and 124 Chassis Tail Light Malfunction
It is not always the bulb or the wiring.
$98.00
1981 to 1995 722.3 722.4 722.5 Transmission Vacuum Modulator Valve
Only black is currently available, but it will work in 722.3 and 722.4 transmissions. This is the easy-to-adjust upgraded version with the new style pin included.
Interior
Dash Wood Coming Loose
This is something you can easily fix yourself
Body and Exterior Trim
Fixing the Most Annoying Problems on Your Old Mercedes
Most in this list are avoided due to cost - Fix them yourself with our kits and save hundreds $$$.
Engine
Preventing Bolt or Thread Seizure
A special compound should be used - especially with steel bolts in aluminum threads