1993 Mercedes-Benz 190 - Answered Questions & Fixed issues

Check to see if your car's brake lights are working. If they aren't, it's your brake light switch located on your brake pedal.

The car needs to "sense" that the brakes are being pressed in order to release the shift lever.

Brake light switches are a pretty common failure item.

Make sure to get a Mercedes switch, the other brands are even more problematic.

Hope this helps.

Please take a look at your Engine's RPMs when this is happening and let us know, as it will help with the diagnosis. If the Engine RPM is stable (not high during the periods of the racing engine sound), then it sounds like your Radiator Fan clutch may be going out. The noise you are hearing is the fan kicking in and blowing a lot of air, which in turn sounds like the engine is racing. If the RPMs are increasing with the racing engine sound, it could be the transmission/(clutch if manual trans) slipping. Hope this helps!

Could be, but I would check your engine wiring harness as MB was forced by the US to use a biodegradable insulation on the wiring and with heat starts to crack and fall apart. Also check voltage regulator on the alternator and your coil.

Hi you need to find out if there is fuel getting to the cylinders,take off ht leads so the car wont start then crank it over a few times and pump the exselleration peddle a few times,now pull each spark plug out in turn and check to see if they are wet with fuel,if not you will have to check from petral pump to cylinder where the problem might be,best of luck.

Go to the following link and the first photo shows the belt routing. I hope this helps as I know changing the belts on these vehicles can be a major pain in the neck. Pelican Mercedes Benz Tech Article Mercedes Benz Drive Belt Replacement...

Check your fuel pump relay ,situated behind the battery next to the ABS and engine ECU it a small black box (not the one that says Klima)

Left rear corner of engine compartment.

Both mechanics mentioned the problem in the same general area, the timing chain rotates the cam shaft that opens and closes the values. I don't know much about your car but assuming it is a 1993 with a lot of miles my guess is that it has a metal timing chain, if so then it could be time to replace it. Metal timing chains (just about all types of timing chains for that matter) stretch and wear over time. I've seen metal chains stretched an inch with less than a 100,000 miles. However, if you are going to do that much work, it you think that might be the problem, then probably it would be worth doing a complete head job. I'm afraid without a lot of expensive diagnostic work auto repair can sometimes be a guessing game. Or find some real expert who has seen all the problems for your type of car.

is it auto or manuel have you tried topping up the gear box oil it sounds to me as if there is not enough in it when you go down hill the oil is going to the sender unit in the box thats if its an auto which in turn lets the gears change

Pull roof lining off.

Did you or previous owner remove any heat shields near the fuel line? Vapor lock can occur if the fuel is being heated.

what fuel is it.

Need to see if you have spark at the spark plugs. Then check fuel pressure at the engine. Do you hear the fuel pump run a few seconds when turn the key on (without cranking)? If you don't hear ir running, could be pump, relay, fuse.

did you check fuse in relay?

The fuel pump relay is behind the battery. remove it and bridge pin #30 (should be under power) and #87 (that goes to the fuel pump). If the fuel pump kicks in you know the relay is bad

A. Check your transmission fluid. It's a hydraulic action. Low fluid will affect your transmission drastically. B. Your reverse clutches could be going out on an automatic transmission. C. Check your linkage, on a front wheel drive, it's usually attached towards the top of the transmission/ on a rear wheeldrive column shift, it can be attached on the side of the transmission. Play from a wornout bushing on that linkage can prevent the linkage from actually pushing the lever far enough to engage reverse. Hope this helps.

Sometimes, those motors for your wipers are a gear tooth. The inside of the actual housing for your wiper is the female side. After wear and tear/time, the teeth are worn down and A. the wiper will fail to turn completely or with any resistance slow down, or B. easily come off the motor. they are sometimes just pressed on. Check the teeth on the male gear to see if they're damaged or the inside of the wiper arm to see if they're damaged. If the teeth on the motor side are fine, you can get away with just buying a new wiper arm versus buying a new motor. Hope this helped.

OVP will not cause it to stall once engine is running. Check the distributor cap and rotor as they often burn out. Coil can fail too.

could be worn clutch bad slave cylinder or cable

can not start good