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Chris, Shop Foreman
Category: Jeep
Satisfied Customers: 3350
Experience:  Jeep Certified Master Tech
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I haVE A 91 YJ 6cyl that is not passing smog at 25mph. I am

Customer Question

I haVE A 91 YJ 6cyl that is not passing smog at 25mph. I am stuck with Smog CHeck only so not much help in the why department.
JA: What specifically didn't pass the test? When was your last oil change?
Customer: The NOx if I am remembering correctly, my paperwork is with the Jeep at the shop. Oil changes regularly at or before 3K. @ years ago it wouldn't pass and I ended up with having to get a new engine.
JA: What is the model of your '91 Jeep?
Customer: Base YJ
JA: Are you fixing your vehicle yourself? What have you tried so far?
Customer: No I have a mechanic. Everything on the car is just 2 years old after not passing 2 years ago!
JA: Anything else you want the mechanic to know before I connect you?
Customer: They want to try another cat, I'm going crazy with this hunt and peck!
Submitted: 10 months ago.
Category: Jeep
Expert:  Amedee replied 10 months ago.

Hello and welcome!

My name isCustomerand I can assist you with your question.

Expert:  Amedee replied 10 months ago.

Can I get the emission readings and your VIN please? Thank you!

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