O2 Sensor Re: More CommentsRe: Hesitation at WTO (archive)

That is true for the 745 as they didn't come with them originally. However, if you have the O2 sensor you should make sure that the rest of the aftermarket control box has been disconnected from the ECU. Otherwise it could be interfering with the mixture control if it's expecting an O2 sensor input but doesn't find one because the O2 sensor wire has been cut. On mine everything was removed but I still retained the O2 sensor because I find it a voluble tool in checking the mixture under various driving conditions.
demet

Grant, I was going to try your suggestion first since it seemed the easyist. Unfortunatly the O2 sensor wire has been cut off at the sensor, and I cannot locate any disconnected wire that should be attached to the sensor. Is this something that will need to be addressed? I have read elsewhere that disconnecting the O2 sensor has helped performance.

On the 733 and 735 if the O2 sensor is not in operation the Motronic controller goes to full rich condition (generally speaking). This is a default condition in the ECU. No it will not hurt to run without the O2 sensor, but milage and exhaust conditions will suffer. In my opinion over a long time you may suffer damage to the cat due to the rich condition on the catalyst in the cat. But anyway if your O2 sensor is not conected you will not be able to tell if the mixture is going rich at WTO.

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Re: O2 Sensor Re: More CommentsRe: Hesitation at W Larry 07:56 11/08/2000 (0)

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