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Re: 86' 635CSi STILL running rough (archive)
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Posted by Rob Barlozzari on January 17, 2000 at 11:45:18:

In Reply to: 86' 635CSi STILL running rough posted by Rob on January 16, 2000 at 10:48:01:

: My mechanic (private BMW guy) told me to disconnect 02 sensor to see if it was the problem w/ rough idle, missing, lurching pulling hills etc. I did, and it ran ok for a time, so I figured it was sensor. I replaced it with a Bosch, and now, after computer has "relearned", it's running like crap. Mechanic says probably air box? Any advise to save me $$$$ I don't have to diagnose this troublesome motronics system?


Rob,

I have the same problem with my 1985.
I've changed wires, plugs, O2 Sensor, the idle control valve, and a list of others. Please tell me, does your car tend to miss at 60km/h or about 1700 rpm and do you have a problem with it burning rich? Does it also run on 5 cylinders when you first start it up?

I hate to bother you with no solution, but I have had no luck in with this problem also. Sorry,
Rob Barlozzari, Windsor, Ontario, Canada.

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