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Found 7 results

  1. My CJ8 is pretty much stock and had not been abused. I have replaced the 4.2 with a fuel injected AMC 360. I grin every time I drive it. The problem with my Jeep's rear-end seems to be axle bearings. They do not seem to make any type of growling noise, but do make a kind of an occasional thunking sound. When it's rolling at speed it is a thunk-------thunk------thunk. Sometimes it goes away or gets louder when I change direction. I did pump some grease into the zirks on the flange that did seem to help once it made its way around the bearing. Seemed to help for maybe 500 miles or so. I am
  2. This topic is a fork off of my misfire diagnosis thread. I will be editing for easier reading and explaining all the various accesses we have for our DRB III era vehicles. In my opinion that proprietary tool is the biggest burden to a Jeep hobbyist. If anyone has any specific diagnostic tool requests, please post and I will go into depth about it! There are amazing tools available to GM guys and for that reason, many of us are wishing for a GM transplant. Aside from displaying misfire counts on a per cylinder basis, the smart phone apps along with a bluetooth OBDII tran
  3. Moses, thanks so much for responding. I’ve actually been following many of your posts and articles regarding tuning up the 2.5 TBI. I will check these posts you’ve listed and see where to go from there and provide feedback to this post. Regarding the 2nd issue (Loud sound) I’m really hoping that it’s what you say such as the driveshafts/splines and NOT my renewed motor or Tranny. The motor still goes on and sounds very smooth and the transmission changes gears smooth also. It makes sense that it is a driveshaft sound and how it Rocks the Jeep. For the first time in 27 years whi
  4. This is driving me nuts..The display on my radio does not light up. A couple of times it came on but now its been off for good I think. The orange wire is the illumination wire and it has no power to it. All the buttons and backlighting work with the dimmer switch..even the radio works but no display because this orange wire..I don't want to start cutting the harness up to find out where the source is. Does anyone know where this orange wire comes from? The light switch ? the ignition switch? All the fuses are good. Could it be a ground wire somewhere? I just want everything to work normally..
  5. Moses, I made a video of the Snap-on MT2500 scan tool readings maybe this will help in the RPM issue. Here is some history of the 89 Jeep Wrangler YJ 2.5L. I have what i call a hiccup when idling or driving every once in awhile. The engine is usually warm to operation temp and will hesitate or act like it dies ( rpm drop at an idle to 200 rpm or so) while idling in the drive way. Sometimes will die but will start right back up and there is days when it dose this hiccup while i am going 25 or 45 mph or what ever speed and has no rhyme or reason. Here is what I have replace or trouble sho
  6. random, intermittent #1 cylinder misfire. I have replaced the coil-pac, #1 injector, spark plugs, and both upstream O2 sensors. engine leakdown and compression normal though #1 slightly lower in compression. emissions always meet I/M standards (no certificate of waiver needed). have all heat shields including #3 injector so vapor lock not issue. engine runs good when not misfiring though does have a slight roughness noticeable when at idle. Is there any way to check the current of an injector wire or plug while engine is running and showing symptoms to see if all is well in the wiring harness
  7. The weather has warmed, and we're not using the block heaters. (They provide approximately 140-degrees F coolant temperature at start-up.) When starting the Jeep XJ Cherokee's 4.0L engine on a relatively cold morning this week, I could hear a subtle misfire. This was during the warm-up/enrichment cycle, and by the time the engine came off the warm-up cycle (around 140-degrees F), the idle stabilized. At highway speeds, the engine seemed to run smoothly in terms of cylinder firing, though there had developed an unusual downshifting habit on grades and strong headwinds. Concerns came
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