Close
Why is my nox so high
1993 Pontiac Bonneville

Why is my NOx so high

(1993 Pontiac Bonneville)
I passed everything on my emissions but my NOx was real high
Ask a Question
1 answer & 0 comments
Popular Answer
of AutoWorks on December 03, 2015
NOx is caused by high combustion temps. Possible causes are faulty EGR system or even excessive carbon buildup in the combustion chambers.
Sign in to reply
General Diagnosis
$88 - $111 Learn More
of AutoWorks on December 03, 2015
NOx is caused by high combustion temps. Possible causes are faulty EGR system or even excessive carbon buildup in the combustion chambers.
Sign in to reply

Similar Questions

View answers to similar questions from RepairPal's community of auto experts and enthusiasts.
Ok i bought this 1992 toyota camry 4 cylinder automatic 2.2l the lady i had bought it from had it smog in october of...
My 2000 tacoma failed the emissions test - engne light had been coming on but mechanic reset it. one mechanic said...