Mechanics

ALL OF A SUDDEN MY STARTED LOSING POWER TRYING TO CLIMB A HILL.

1990 Mercedes Benz 420sel • 194,860 miles

I bought a car in NJ on eBay and drove it home to Bransn Mo. The drive home was coming to an uneventful end of the 1,200 mile trip and was twenty miles from home. (Branson Missouri--RT 65 lots of long steep hills) when all of a sudden I noticed the car was slowing down as I was climbing one of the hills. In fact, by the time I reached the top I was down to 25 miles per hour. Even though the engine seemed ok, it did not have an pulling power. It continued to do this for the last 20 miles. I finally figured out to go fast down the hill to gain enough speed to get me over the next hill. When I cam to flat ground, the car still did not have any power, but it did pull itself home. I kept having to feather the gas to keep the car moving forward. Up until this incident I had not had any of problems and for 1,200 miles the car drove great.


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Bransonboy
August 28, 2011.



Is this an automatic transmisison vehicle?

From symptom description, seems the transmission is not down-shifting to provide the pulling power.

Check the transmission fluids level and note if it smells burnt and is very dark in color.

KHLow2008
Aug 28, 2011.