2012 Nissan Quest LE: Exhaust Gas Detection Actually Works
April 02, 2012
Let's get this out of the way right now: That's a diesel-powered Jeep Wrangler in front of me. Yes, diesel. It's an older model and clearly had an engine swap. Also, based on the frequency and intensity of the black exhaust pouring from its tailpipe, little care was given to the diesel engine's emissions system. Such is the curse/blessing of a diesel swap in California. But that's not what I'm here to talk about.
I followed this guy in the Quest for five or so miles down an isolated road in the Cleveland National Forest. There were no other cars on the road and we were miles from civilization. I can confirm that the van's Exhaust Gas Detection system isn't a gimmick. Every time the Wrangler driver would open the throttle, the Jeep emitted a thick stream of black soot which I intentionally drove through.
Only on one brief occassion did I detect the stench of diesel exhaust. This, I'd guess, is because the system in only active when in "auto recircluation" mode. I left it in this mode the whole time, but because the Jeep didn't spew stink the whole time, I presume the system switched to recirculation only when necessary. Could be that it requires a few seconds to react. In any case, this was an succesful showing for a system which I doubted until now.
Good work, Nissan. Now if you could do something about stink coming from inside the van.
Josh Jacquot, Senior editor