'92 190E 2.6 runs great, WHY?

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r parris - 10 Sep 2004 16:37 GMT

I just finished replacing O2 sensor, plugs, air cleaner filter, oil
change and filter and cleaned air temperature sensor in air cleaner
snokel also cleaned battery cables and posts. Car used to stumble
after start (was told to have air/fuel reset) which I have yet to
do..... Suddenly the car runs great, with pep and energy and, NO Warm
Up Holding of a low gear for the first mile or so .....just get in and
drive what did I do wrong?................Rick

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Tiger - 10 Sep 2004 17:08 GMT

Hmmm... I am wondering what you are asking of us... your car ran great after
you did routine maintenanced... yet you are sort of asking how to put it
back to crappy running condition?

I would say the cleaning the battery cable and post probably did the most
trick... second is the O2 sensor.

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r parris - 10 Sep 2004 19:20 GMT

No...there is now, NO "stuck in gear feeling, of pulling a trailer
while the catalytic converter warms up. This started
two days ago. You can now get in the car, after overnight, start it,
and drive it ....with immediate gear changes............no lugging.

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Tiger - 10 Sep 2004 20:58 GMT

It is summertime now... it is hot enough or warm enough that the emission
control system have estimated that you don't need those extended gear
shifting interval.

I forgot to ask you how many wires you have on that O2 sensor... If you have
three or four, then that is a heated O2 sensor... If I am correct, then your
heater on that old O2 sensor is dead.

When winter come, that extended shifting will come back.

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r parris - 11 Sep 2004 00:55 GMT

3wires, 2 white, 1 black, The O2 sensor that is the same as Mustang 5.0
heated. the Mercedes plugs, were spliced, and soldered onto it. I
thought something was wrong when it no longer refused to change gear,
untl the catalytic converter warmed up

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Josh - 12 Sep 2004 01:49 GMT

I'd say that you should count your blessings and put a little extra in the
offering plate this Sunday.

I just had my wife's car serviced (120K) and part of the exhaust system
replaced. It now runs like new - engine is smooth and has great
acceleration. I'm sure not going to question or complain about it! I'm
just hoping it doesn't need more work for a while.

:-)

> 3wires, 2 white, 1 black, The O2 sensor that is the same as Mustang 5.0
> heated. the Mercedes plugs, were spliced, and soldered onto it. I
> thought something was wrong when it no longer refused to change gear,
> untl the catalytic converter warmed up

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