Q: why my 1985 190e mbz lose power at 3k rpms

Hello, by the way you describe your concern, it sounds like the vehicle has a high idle, or an idle flare at a stop. Check for the Technical Service Bulletin (TSB 01-005/14) for an updated software/firmware to help remedy this...

That is most likely the injection pump feed line that is leaking. This line, if leaking, will need to be replaced (https://www.yourmechanic.com/services/fuel-injection-lines-replacement). The key must be off and out of the ignition to prevent accidental startup of the fuel feed...

You could easily have a minor alignment problem, or a minor wear or worn tie rod or something like that. The first thing you should do is jack the car up, pull up to see if there's any play. If...

When the tie rod end (https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-tie-rod-end) starts to wear, it's commonly due to excessive abuse (like driving on bumpy roads or being hit by blunt objects like curbs and pot holes). Frequently, the part that wears out in the tie...

Code 47 (OBD-1) is the only code that pertains to "fuel pump related faults" in your car, so presumably that is the code that is recurring. If it is not Code 47, but rather a different code, that you are...

This can be caused by a number of things such as low coolant levels, a faulty thermostat, or a failing coolant fan switch. As you may know the coolant fan switch (https://www.yourmechanic.com/services/cooling-fan-relay-replacement) helps to maintain the proper coolant temperature by...

From the description you have provided it sounds like it could be, the electric power steering motor has failed. It could also be, an electrical power or ground failure to the power steering motor. Before you have the electric steering...

Hi There, You may have a failing voltage regulator that could be allowing the alternator to supply too much or too little amperage to the battery resulting in the battery never maintaining a consistent charge as it is designed to....

Hi there. When the Service tire warning light is illuminated it typically indicates that there is a communication problem with the TPM sensors. However, it could also indicate a low tire pressure reading; especially when it's extremely hot or cold....