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smog test Lambda value at limit 850 1994

posted by  tom 240 on  Wed Mar 4 19:03 CST 2009
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last visit: Wed Jun 17 18:20 CST 2009
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Hi,
It's good I can exclude cat and exhaust and I share the opinion about vacuum leak, to be checked. A minor leak wouldn't do much over 2000 rpms? would it.

But then the logic? A leak after MAF is adding air and causing leaner mix and higher lambda (>1). Is there a control feed back loop making the engine to run rich instead? based on HO2S signal for example.

Anyway the mpg is down last year, based on this or the change in use of the car since the new V70D5AWD is used for longer distances mainly.

br Tapsa






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New smog test Lambda value at limit [850][1994]
posted by  tom 240  on Tue Mar 3 20:06 CST 2009 >


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