190e 2.3 - bogs often, always at WOT - Mercedes-Benz Forum

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post #1 of 1 (permalink) Old 02-25-2010, 09:14 AM Thread Starter
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Date registered: Feb 2010
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190e 2.3 - bogs often, always at WOT

I have a '92 190e
165,000 miles
2.3 with an auto

First off, when I disconnect and reconnect the battery, the idle is rough for a while, which I assume is normal. But for a few days after, the car will often lose all power after 1-5 minutes of driving, to the point where it will struggle to go 20mph. This spell then clears up after 2 minutes and then the car runs "normally." After a few days of doing this, it return to normal.

Now, running "normally" for this car means the gas pedal is what I like to call a "random acceleration button." Sometimes when I press it down, I get what I expect is the right amount of power. Sometimes not. Minor throttle input usually works out OK, but mid-range is a crap shoot, sometimes bogs a bit then starts pulling. There is a spot about 80-90% of the way down, just before the kickdown, where the car loses all power, i mean it actually slows down. Flooring it at speed results in a downshift and deceleration...

So far, Ive Seafoamed, changed spark plugs, cleaned the idle-air control, and "fixed" the cat.

Its certainly better than when I got it, but still not right.
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