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  1. JK Technical Discussion
    (Shout out to @Luckymac for giving me a push to get this information) I'd been wanting to to do the 4BT Diesel swap and I wanted a street legal vehicle. The people to call were the Diesel Emissions Program based in Denver at 303-744-2522. Holy smokes the people who work there were insanely...
  2. Colorado Jeep Forum
    I posted this originally over in the TJ general discussion forum but one of the members recommended I try here. Sorry, a bit lenghty but this was my post: Anyone get a V8 engine swap certified through Air Care Colorado (ACC) in the last year or so that may be willing to share their experience...
  3. TJ General Discussion
    Anyone get a V8 engine swap certified through Air Care Colorado (ACC) in the last year or so that may be willing to share their experience and insight on the process and how picky they are during the inspection? Though I appreciate people trying to help I am not looking for inexperienced advise...
  4. TJ General Discussion
    After being pulled over for an expired inspection sticker, I took my TJ to the shop to get it inspected. It is an 05 that I have owned for 5 years and it has passed every year. It failed this year, for emissions reasons (picture of report attached). The Jeep is a 2005, 4.0L 6 speed manual X...
  5. TJ Technical Discussion
    Hey guys I’m new to this forum and could really use some extra help with this problem that has occurred recently... For starters I got an engine code P0431 warm up catalyst defesency bank 2. So I started by replacing the o2 sensors on that bank and that did not solve the problem.... the next...
  6. YJ Technical Discussion
    I'm living in California and trying to get my 1988 YJ 4.2L to pass a Smog Check :mad: My mechanic has noticed a problem with the charcoal / vapor canister, appears cracked and the insides need replacing anyway (makes sense since there has been 30 yrs of gas running through it). I am really...
  7. JK Technical Discussion
    All, I just wanted to share what I found through trial and error and lots and lots of searching this forum, other forums, and online in general. I've had EVAP (Evaporative Emission System) leak error codes (P0455, P0456, P0457 or the GAS CAP message) multiple times over the past couple of years...
  8. TJ Technical Discussion
    A few months back, I had a check engine light come on on my 05 TJ, so as always, I went straight to AutoZone and found out it was a code for bank 1 sensor 1. I thought that was weird because as I'm sure you all know, the O2 sensors in our TJs leave much to be desired. Regardless, I have already...
  9. YJ Technical Discussion
    Hey guys, finally found the time to post over here on the wranglerforums. I have a bewildering problem with my YJ. Yesterday I went through and found some engine codes. I'm kinda curious about the codes. I have the standard battery disconnect, a/c circuit, and cooling fan circuit codes. But I...
  10. TJ Technical Discussion
    Apogees if this subject has already been discussed. I'm new to the forum. I just picked up my FIRST TJ off Craigslist two weeks ago. I had a fellow Jeep friend go over the whole thing for me and he said it looks really good and sturdy. It's a '97 with 145K on the inline 4, automatic, with a...
  11. TJ Technical Discussion
    I've got a 2003 Wrangler X and I need to replace all 3 catalytic converters. My emissions sticker under the hood says the vehicle conforms to U.S. EPA NLEV regulations to 2003 model year new LEV light-duty trucks and California regulations. I live in Massachusetts and I don't plan on moving to...
  12. JK Technical Discussion
    Started running a P0032 (Oxygen Heater Control Circuit High) code about a week ago. This morning, I got a flashing CEL, ran the codes, and a P0172 (System too Rich, Bank 1 System 1) is on, in edition to the original P0032. I have a few suspicions, but what do y'all think may be causing this...
  13. YJ Technical Discussion
    Hey guys, I'm new to this forum but I've been reading for a while now but this scenario prompted me to join to hopefully get some advice here. I picked up my first YJ a few weeks ago, got it from an old man just across stateline (Where smog is NOT required). It's running the 4.2 straight 6. I'd...
  14. YJ Technical Discussion
    I'm 18 and have no experience with fixing cars, my jeep keeps breaking down and I've managed to fix it up to this point but the pictures I took of the vacuum hoses weren't very good and now I have no idea where to connect them. I have a 2.5L 1990 Jeep Wrangler, I'll attach some pictures along...
  15. TJ Technical Discussion
    Just had a real quick question and any suggestions would be so greatly appreciated. My husband an I purchased a 1998 Jeep Wrangler TJ, we live in Indiana, where emissions testing is required to be plated, and it passed everything except the Catalyst is reading incomplete. I feel like we've...
  16. YJ Technical Discussion
    Hello I failed with stock equip and carb. I know it is crap but I need it to pass visual here in centennial, CO. I have done -Team Rush upgrade- cap, rotor, plugs and wires. -New O2 sensor -New air filter -Oil change Has small hesitation on acceleration still. Test info: HC GPM --- 7.7829...
  17. TJ Technical Discussion
    My 04 Wrangler started having starter/battery issues a few weeks ago. Battery has been tested twice under different conditions - it has 100% voltage so it's good to go. She won't start up every few starts - sometime she clicks, sometimes the lights won't even turn on, sometimes not a damn...
  18. TJ Technical Discussion
    Hello, New to the forum but a jeep owner since 07. I have a 2006 TJ wrangler. I'm having trouble passing my Colorado emissions test. I've taken it 6 times now! I'm not passing my NOx test. My first test i barley failed it was 2.3 which it needs to be at 2.0 I had a engine light on that...
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