I fix one thing and another one is ready, I am telling you if I didnt have this forum, I would sell this car.

But, I love Mercedes, what can I say, it saved my life once, driving from Germany to Prague. Long story... Any other car beside BMW, I think it would of been a disaster..

Anyway, here is a problem just discovered, I came home logged on the net and looking for answer from the wise one's.

I changed my thermostat and water ran down the thermostat hole, I stuck a hose in the resorvoir, while car running and flushed out more water. Water was puring from the T-stat housing. Water was sprinkling slightly around the engine..more like MIST.

I Installed the T-stat and refilled and wiped the engine.

ALSO, I opened the airfilter to inspect and put the cover back on.

I took the car for drive, 50 Miles.. no problem.

I think maybe the problem below has nothing to do with the above situation, I dont know it could be, that's why I am asking for suggestions.

After driving for 50 miles as mentioned above , I came home, then after 2 hours took the car for drive again HERE is the problem.


1. Car felt loss of acceleration when taking off from stop or around low speed.
2. Car seemed to give a LITTLE jerk.. (Transmission)
3. No loss of acceleration at high speed 40-50 mph ( I think)
4. car seemed to miss VERY VERY little, when I started FIRST at idle and park, it went away after few minutes.
5. NOW THE CHECK ENGINE LIGHT CAME ON, on display and on the side of the display.

Went to Autozone and they read the codes: 4 Codes
p0173
p0170
p0730
p0700

Codes, were reset, however, the loss of acceleration comes and goes.

I came home and pulled out the codes, and saw the following:

P0173 Fuel Trim Malfunction (Bank 2)
P0170 Fuel Trim Malfunction (Bank 1)
P0730 Incorrect Gear Ratio
P0700 Transmission Control System Malfunction

Now, I am stuck.
I think p0173 and p0170 could be many thing, but MOST cases it is MASS air sensor. Few cases Vacuum Leak.

A. HOW DO I CHECK VACCUM LEAK?

Now, what about the p0730 and p0700, again all 4 codes came at the same time.

Autozone reset the code, car has 1/2 tank of gas and the CAP is on tight.

No Check Engine Light since than, it has been 2 hours and I drove the car 15 miles and shut off the car and restarted 2 times, since the code reset. But the car still loses on acceleration, and rarely very minor jerk on the transmission.

Maybe changing air flow MASS will take care of all 4, but I am worried about the p0730, p0700.

Thanks in advance, Since,I have very little knowledge about the Mercedes, this forum has helped me out a lot.

Thanks in Advance.

I guess my out of town trip is off...