bank 1 too lean and catalyst system below threshold.

What is your question?

starts no stall idles rough,codes read system too rich,catalyst system below threshold,intake camshaft position timing.CLEANED MAF sensor,checked for vacuum leaks.GOING TO CHANGE SPARKPLUGS NEXT.Ordered new maf sensor

What makes this problem better or worse?

after driving idles really low 500rpm stumbles on accelerationone week.

How long has your 2006 Volvo S40 had this problem?

started suddenly a week ago after cold snap also put Lucas fuel injector cleaner in

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in Crawfordsville IN

Feb 12, 2019

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RepairPal Certified shops can diagnose and repair your 2006 Volvo S40. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.

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