1. Jt223

    Revving idle problems

    Hello all, So I had a couple of codes pop up a month or so ago. Misfire on cylinder 5, a couple of O2 sensors and a failure to reach idle code. I replaced spark plugs, O2 sensors, and things were good for a bit. Haven't thrown a code since. But I am having this weird revv problem. It runs fine...
  2. BusterJeep

    2004 TJ Wrangler X HVAC Question

    Any thoughts on this? This morning it was a chilly 31 degrees here in Chandler, AZ. My jeep is not a fan of cold weather and neither am I. Anyway, I started it up and let it warm up to about 150 before backing out of the driveway and heading out to run some errands. As soon as I turned on the...
  3. M

    Jeep TJ intermittent surging idle and stalling

    I’ve recently had some issues with my 2004 Jeep wrangler rubicon that I was looking for some help with. Since I purchased the vehicle, I’ve had a very loud whistling sound that I assumed to be a vacuum leak. I replaced the throttle body as that’s where a majority of the smoke came out of when...
  4. L

    2005 LJ throttle hesitation / stall when warm

    Hey everyone, I have an interesting issue that I'd love some feedback on. I have a 2005 LJ, non-rubicon, 195,000 miles, with the 42RLE automatic transmission. I'm running into an interesting issue where the engine will have a very small moment of almost stalling when hitting the throttle at...
  5. jonlandrum

    Previous owner left me this doozy

    What is this circuit, and what do I need to do to take this back stock? I pulled the intake tube to spray some throttle body cleaner in it, and noticed the electrical tape and orange zip ties. It seems related to the vacuum system, but I don't know where to begin on restoring it. On a positive...
  6. A

    Open port on LDP and un-used electrical connection

    Bought a 2000 4.0 and just got engine light and vacuum noise. I see LDP has open port and there is an un-used electrical connection next to it. Can someone tell me where the open port needs to connect as well as the connector?
  7. jakehudgins94

    2.5 4 cylinder: what goes here?

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  8. Svarbo

    Vacuum Harness Replacment

    I am looking to replace all my Vacuum hoses, elbows and fittings/grommets. Does anyone know if there is a complete kit that can be purchased or do I have to do it piece by piece? If there is a kit, where can I buy it/PN? I have searched for a while now and can't find anything specific to a 2004...