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  1. S

    CAFE Emissions O2's

    Here's how it is setup atm
  2. S

    CAFE Emissions O2's

    I cant believe I didnt even think about that. Great idea!
  3. S

    CAFE Emissions O2's

    Thanks everyone and yes I need to clarify. It does seem mine should come with 5 O2 sensors, but it also only had wires for two in the header. So, Im looking to see if post-pre-cat O2s adjust fuel ratio or simply look at cat efficiency. I have harnesses for only two sensors so Im also looking to...
  4. S

    CAFE Emissions O2's

    I have an 01 that I replaced the engine with a 98 ZJ. With the swap I did a speed daddy header. IIRC, I should have 5 total O2 sensors. At this time, I have two in the header. My questions are; Which of them adjust the fuel ratio? How do I tell which is which? Where should all the harnesses come...
  5. S

    4.0 getting really noisy! Have I killed another one? Videos

    Noise issue has been solved with the exception of the noise a tractor engine normally makes. It was the water pump. First time I took off belt it seemed fine from what I could tell. It was still a tad noisy from the first tho; reason I took the belt off the first time. So now to figure out the...
  6. S

    4.0 getting really noisy! Have I killed another one? Videos

    Same result before and after new filter.
  7. S

    4.0 getting really noisy! Have I killed another one? Videos

    4 day old STP. Before that was Wix.
  8. S

    4.0 getting really noisy! Have I killed another one? Videos

    You hear the fan. No vac leak. Think like marbles in a tin can.
  9. S

    4.0 getting really noisy! Have I killed another one? Videos

    Few months ago I put in a 130k mile 98 ZJ engine in my XJ. New timing chain, sprockets, and gaskets. No slack in the rods from what I could tell when I had the pan off. All has been fine for a few thousand miles. Over the last week it has been slowly getting noisier and noisier. At first was so...
  10. S

    Popping or Chipping noises on Accel, after turn?!

    Thanks for the help and ideas guys Looks like it was the starter just barely engaging This little bugger somehow made its way to the solenoid
  11. S

    Popping or Chipping noises on Accel, after turn?!

    Going to use a buddies old gopro Turn up the volume, it's clearly there. The noise you hear is not road noise or creaking interior. Nope It's tight Belt has less than 4000 on it Has about 100 on new engine with no issue till now, same tightness.
  12. S

    Popping or Chipping noises on Accel, after turn?!

    Ok, to start, Jeep has always had a sluggish start sometimes. This issue is new and doesn't seem to correlate. Basically a couple of weeks ago I started getting belt squeal on cold start. Goes away pretty quickly. Now Im getting a popping noise or just a noise cause even popping doesn't...
  13. S

    Tips on Replacing My Engine

    If you end up having to decide between a 98 ZJ block and another block know that there is no need for the oil filter adapter on the 98. The 98 has the proper motor mount locations but has the newer YJ and WJ oil filter location. Also note that the head on an 01 and 2000.5 have different sized...
  14. S

    Door pins?

    Thanks for the pics guys. Now I at least know what they look like and wth we're talking about :D Now Im curious how they can be extended. I remember a thread I read a long time ago that shows how one could make the doors open wider. Suppose I should check my door condition first lol :D
  15. S

    Intermittent lack of power

    Thanks for all the suggestions everyone! True, I have the coil pack over plugs, so I cant pull to check spark. Again, this is so intermittent that checking this way, even if I could, would be pointless. The engine is a fairly recent install, with new gaskets top to bottom. Compression is fine...
  16. S

    A-Pillar Plastic and Tabs Keep Breaking

    The cheap Chrysler job done on these pillars is ridiculous! Apparently they simply melt the plastic to hold the tabs. This has been broken since Ive had my XJ. Ive tried putting the tabs back on with epoxy. Lasts for a day... Ive dont this twice with Gorilla Glue Epoxy and Loctite Epoxy! Any...
  17. S

    Door pins?

    Can someone take a pic of wtf we're talking about?
  18. S

    leak from rear main seal

    https://www.youtube.com/watch?v=L40xkuxCbYk Good video on replacement English tho
  19. S

    Door pins?

    I thought he was talking about something else. That is why I recommended it
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