20 Most Recent 2004 Mercedes-Benz CLK-Class - Page 2 Questions & Answers

Sound like the ISC actuator it part of the throttle body, and its a reversible motor, it maintains idle speed stability its a motor actuator,and is part of the throttle body but just dont condemd it sevice the throttle body this acuator motor sometime has a hard time moving to adjust RPM.Then there is the MAF(mass airflow sensor) even though this measures good or bad it does not set a code or Check engine light,
Here the most probable cause MAF they have problems on MBZ CLK 320 and only a fuel trim reading can detect problems with this sensor, dont be dependent on ck eng light it wont show, then there is the MAP manifold air pressure after coming to a stop sign the EGR may still be open and not close properly causing the stumble and this wont give a code. So here is the most probable cause the MAF mass air flow going out of range causing lean fuel trim or the EGR pintle not closing properly stumbing the vehicle , so I leave you with MAF or EGR either one or the other or both or just replace both

Likely a miss fire. It would be good to read the error code off th computer. likely candidates are spark plug, ignition coils or fuel injectors.

This is commonly caused just after starting if the battery is weak, if your battery is ok, get it tested by Mercedes as the sensor might have gone bad, they are only a few hundred for the part and 20 mins to replace if it has failed, but test your battery first

In order to check the fluid in the transmission you need the Mercedes Benz dip stick. It's a special tool needed for all the 722.6 transmissions. Best thing is probably to just stop by a Mercedes Independent shop where they can check it real quick. It uses a synthetic based fluid. I always go with the factory fluid.

find all the screws or bolts in the panel some can be hind plastic pieces that come off and when you got all the out grab the door handle in the inside and hold the door and pull very hard like you are shuting it if you dont have a panel tool than use that

it blows fuses in the electrical system and it can also take out the computer so make sure you test ALL of the fuses