My 91' Tracker failed emissions badly today...
As I'm selling it, I've gotta make it pass.
Basically failed on all 3 specs - NOx, CO, and HC...
My first thought is either the o2 sensor, or the cat...since there's really little else (from my perspective, anyhow) to go wrong on these engines, emissions wise.
I did change the plugs before the test, changed the oil and air filter, and checked everything over..but still, a miserable failure.
Anyone have any related experience with Tracker / Sidekicks and emissions problems?
What's the most common problem emissions wise for a 3-point failure like this?
I'm most apt to try with just an o2 sensor to begin with, and go from there...as I do suspect its overdue for one...but no SES light at this point, though.
Cat may also be suspect...
Any suggestions / help appreciated. I suspect changing the o2 and cat together will result in a pass, which is all I need to get rid of the truck, but any other insight appreciated regardless..
Reply here, or email me pepper99@**NO*SPAM**.primus.ca
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Thanks...Mark.