Why is my NOx so high

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I passed everything on my emissions but my NOx was real high

GoldieGucci in Aurora CO

Dec 2, 2015

1 Reply

Popular Answer

Auto Works ATXon Dec 3, 2015

NOx is caused by high combustion temps. Possible causes are faulty EGR system or even excessive carbon buildup in the combustion chambers.

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RepairPal Certified shops can diagnose and repair your 1993 Pontiac Bonneville. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.

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1 Reply

Popular Answer

Auto Works ATXon Dec 3, 2015

NOx is caused by high combustion temps. Possible causes are faulty EGR system or even excessive carbon buildup in the combustion chambers.

Join the conversation!

What are the best Pontiac repair shops?

RepairPal Certified shops can diagnose and repair your 1993 Pontiac Bonneville. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.