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I appreciate the offer, but I'm not ready to buy a replacement yet. At this point, I'm really more interested in knowing if the 228 and 229 are interchangeable. Thanks anyway.

I have an 86 Cherokee with a 2.8L Chevy engine and a New Process 228A transfer case. Unfortunately, the transfer case is bad and will need to be replaced (It's locked-up and the fluid is gray, with little bits of metal). Does anybody know if the New Process 229 transfer case is interchangeable...

That makes sense to me. Although, I think the cat also converts some CO to CO2. If the carb was out of adjustment, I'd expect to see a failure during the idle part of the test as well. It might be a little on the rich side, but the engine is running smoothly and the exhaust is clear and smells...

I'm not sure. I bought the Jeep used, but if I had to guess, I'd say it probably is the original. I'd rather not replace it because those babies are expensive. I only need to reduce the CO emissions by 1.5 more percentage points to pass the test, so I'm seriously contemplating the "heat" trick...

Thanks for the tips. I've heard about the bottles of "Heat" trick. I think the primary ingredient is isopropyl alcohol, but how would that reduce emissions? Less carbon atoms in the isopropyl molecule than there are in the regular gasoline molecule I suppose. I went to the auto parts store...

I forgot to mention, it's a 1986 Cherokee Laredo with the 2.8L Chevy 6 cyl engine, Automatic. Also, I don't think the previous link came through. Here's the end of it. Just add the "http://" before it. mediaservice.photoisland.com/auction/Nov/20041132335210053274955.jpg

Hi Everybody, I just re-failed my emissions test, unfortunately. It passed the idle and cruising speed Hydrocarbons test (HC), as well as the idle Carbon Monoxide test (CO), but I was way over the limit on the cruising Carbon Monoxide percentage. The technician gave me a hand out that...