BENZ AID - COMMON QUESTIONS AND ANSWERS

1988 300TE Intermittant engine stalling, not restarting.

Kent, this car has been plagued with the same problem as long as we have owned it. (about ten years) I have done new points and plugs several times and the car has run better but it still will go through occasional fits of dieing in the road and not restarting. It has remained dead for several days and begun running again weather I have done anything to it or not. It has dropped in its tracks within 24 hrs of a complete tune up and it has gone 20K without a hiccup.

Chassis Model Number

W124

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Gas Engine Specific Aid

1983 300SD vacuum leaks & other issues

1983 300sd trans hard shift from 1st to 2nd then it skip shifts into 3rd and shifts into 4th too early.... slow loss of vacuum when checking underhood line going to ignition switch... also air not blowing from center vents, and sometimes it takes a while til heater blows hot even if it is warmed up..... i replaced green dashpot and have a new trans modulater valve but want to make sure its all correct before i install the modulator because it looks like its been replaced recently (green) thanx in advanced! also do u hacea vacuum diagram for the doorlocks/vacuum pump in trunk....

Chassis Model Number

W126

Forums

Body and Interior Specific Aid

92 300D 2.5T - Carbon Sludge in Crossover and Intake

I purchased this vehicle about 18 months ago with 153K. It is not a daily driver. When driven it is on trips of several hundred miles at 75 - 80 mph. I recently had the vacuum shutoff valve go bad at approximately 160K. I decided if I was going to replace the shut off valve I would do a complete glow plug replacement, replace injector nozzles then balance injectors and of course replace the return fuel lines. I purchased evrything threw Mercedes Source and the job has been straight forward.

Chassis Model Number

W124

Forums

Diesel Engine Specific Aid

1984 190D Cylinder 3 Misfires

My 1984 190D 2.2L sounds like it's missing on one cylinder, there is a chuffing sound coming from the tail pipe. There is also a knocking sound that is most easily heard when letting off the throttle.

I did a compression test and all four cylinders were between 420-440 psi which was encouraging. Then I ran two cans of diesel purge through but there was no change, even while the car was running on the diesel purge.

Chassis Model Number

W201

Forums

Diesel Engine Specific Aid

83 300sd VACUUM?

symptoms include.... door locks dont work.... well sometimes i come out and some doors are locked and battery is dead.. (vacuum pump running?), air dont blow out rite vents, takes a long time for heat to blow hot even if engine is at oper temp.... minor delay in shutdown of engine.... i hooked up mityvac to ignition vacuum line and it slowly leakes down.... normal?

Chassis Model Number

W126

Forums

Diesel Engine Specific Aid

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