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O sensor 900

posted by  teamdrake on  Mon Jun 30 11:49 CST 2003
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last visit: Wed Jan 9 19:36 CST 2013
[RELATED]

I just failed the emisions and the service station said it could be one of two things the O sensor or the cat converter.

question what readings should you get on the O sensor in a 93 940 wagon non turbo.

thanks
ED








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better question...what are the three readings and three lmits? 900

posted by  someone claiming to be JohnB on  Mon Jun 30 13:13 CST 2003 [RELATED]

Chances are it's the converter if the car has over 250K miles on it.

Also, make sure the connector is attached to the throttle switch...or else the ecu will never know the engine is at idle to go into closed loop...or closed loop at anything short of wot.







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