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Mercedes installed small fuel warmers on these engines using engine coolant to warm up the fuel just before it enters the injection pump. The idea is great - especially in cold climates, but in moderate and warmer climates it is probably not needed.

These instructions cover problems you may have with your bulb holders, how to set up the new LED bulbs to do TIGHTLY into the bulbs holders so they won't come loose and go out on you, and how to modify and experiment with the maximum brightness of an individual LED bulb.

Wouldn’t it be grand if there was a way to remove your ignition tumbler without a key - then easily start the car using a flat blade screw driver or needle nose pliers and drive away?

Old cars and brake issues go hand in hand. Especially if the car is not driving very often. Brake problems usually first show up as “dragging” or sticking brakes. If this issue is not dealt with immediately it can lead to serious problem including the car catching on fire. 

If you have a Mercedes of this era equipped with an impulse code reader you will find a little numbered black box similar to the one in the pictured here in your engine compartment. It is located over by the battery and may have a black cover on it that can be lifted off.

The head has been successfully removed. There is quite a bit of work that will need to be done before the head is ready to go back on. The head and the block will need to be cleaned and inspected and parts will need to be ordered. Other parts should be replaced while the head is off the engine.

You can save a lot of money if you can rebuild your old brake calipers, especially on some older models. If you can just get the pistons out of the housings, most calipers are rebuildable, unless they have been subject to road salt or have sat exposed to the weather for years without use.

This is a common occurrence as these gas engines with Bosch C.I.S. fuel injection age. Most of them are now at least 20 + years old. The problem goes something like this. You start the engine cold and it will hardly run. It runs rough and idles very low and will even quit a few times.

If you think CIS fuel injectors can just be ignored, think again. Sure, your gas engine will continue to start and run “ok”, but you may find that it is not producing the power it once did nor the fuel mileage it once delivered.

Tired of lugging around heavy batteries or battery boosters to test electrical components in your car? It does not have to be a Mercedes. It does not even have to be a car. Anything that runs off 12 volt DC power can be tested by these small, light weight but very powerful batteries.

If your rear door power window is not moving or the motor is not making any noise, it could be a failed motor, rear door switch, front switch or even a wiring problem. Trying to narrow down the problem can be frustrating unless you know the proper troubleshooting sequence.

If you smell fuel inside your engine compartment you need to find the source of the leak and fix it IMMEDIATELY. I think we have all personally seen or seen pictures of those cars with the engine burning on the side of the road. Yes, usually caused by a fuel leak close to the engine!!!

Starting in the U.S. model year 1986, the headlights were changed on the W126 models. You could no longer just unscrew some plastic knobs to get the headlight door (plastic surround) off. This new style plastic door became the cover for the fog light as well.

I don't think there is any owner out there who has owned a 1978 to 1993 diesel automatic for any length of time and who has not had some sort of shift problem with the transmission. Maybe it was just a little jerk or a slipping shift. Maybe the rear end clunked hard when you came to a stop.

Interior water leaks are very common. More so on the older 108, 116, 114, 115. 123, and 126 chassis than on the 201 and 124 chassis. This is largely due to the fact that the older models used rubber seals on the rear glass and on the front windshield (except the 126).

Adjusting the power tilting sunroof is not difficult if you have the right knowledge and a couple alignment pin tools. Adjustment is not usually needed if the sunroof is working properly.

When an old Mercedes ( or any other car for that matter ) has sat idle for over a year it can be a challenge to get it safely back on the road again. If it has sat idle for more than 5 years you may find it difficult to even get the engine running. 

Groaning, snaping and jammed door check straps are a common problem on the older models (up through 1995). This is primarily due to age and lack of lubrication. Newer models will soon start having similar problems. Rain water getting inside the doors is the big killer.