Originally Posted by The Melmaan
There are a couple of issues that I need to have help on:
1. How do I remove and replace the belt tensioner?
2. At what temp should the Auxillary fan turns on?
3. How do I know if the fan clutch is working?
4. How do replace the rear tranny oil seal?
The issue that I have is overheating, I have removed the thermostat, replace the water pump, replaced the radiator and it is still over heating. It takes about 20mins at idle before it over heat.
There is also a leak on the transmission and a mechanic told me that it is the rear oil seal. I have replaced the pan gasket.
My mechanic said that the 190 is a lemon but I like the car and style.
Help me fix my baby!!!!!!
Melmaan - Check your previous post "89 MBZ 190 Overheating" on page 4 of this forum.
As I said earlier, if you removed and didn't replace your thermostat- it may cause overheating. (see my explanation in the previous post.)
Now to answer your new questions:
1) To remove the belt tensioner you need to remove the serpentine belt, the bolt that attached the tensioner pulley to the tensioner and the bolt that attached the tensioner to the engine (bracket). Please note that the tensioner pulley bolt loosens oppsite the engine's rotation.
2) On a 300E 2.6, the auxillary fan turns on at above 84 degree which is the thermostat setting.
3) To check the fan clutch - remove the serpentine belt and turn the fan blade, when cold the fun is hard to turn, when hot the fun is easy to turn.
4) Rear tranny seal - if you are referring to the seal between the engine and transmission, you have to remove the trans. If you are referring to the seal between the trans and the propeller shaft, you have to remove the propeller shaft plunge.
It is easy to conclude that a car is a lemon if one don't know what is wrong and why it got to that stage of disrepair.
I can help you solve of determine the cause of your overheating if you answer the ff questions:
1)Did you remove your thermostat and not replace it?
2)Are your combustion chambers compression even or within normal spec?
Post your answers and go back to this thread, don't open another thread.