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1-16 of 16 Results
  1. YJ Technical Discussion
    I am going to swap my 4.2 over to a 4.0 cylinder head, manifold, and MPI and I pulled the parts from a 1995 Grand Cherokee. I am fine with the mechanical side of this since it really isn't any more complicated than putting a new head on, but I am having trouble finding a good wiring diagram. I...
  2. TJ General Discussion
    I'm very pleased with my new toy a 2002 registered (built 2001) 4.0 Sahara auto on 16" rims (better tyre choice here in the U.K.) air con, and a rust free frame. It has done 75,000 miles and brings a big grin to my face every time I drive it. BUT The cylinder head is original 2001, not TUPY...
  3. TJ Technical Discussion
    Hey everyone! New to the forum. As well as being an owner of a Jeep. Purchased a used 2001 Jeep Wrangler 4.0 with only 52k miles 6 months ago. Recently after parking and shutting off my engine, my engine went POP:atomic:! Radiator top blew off, cloud of smoke, dark fluid sprayed everywhere. Got...
  4. Classifieds Archive
    Completely rebuilt cylinder head with new valves spring and guides. NO core charge. I will deliver locally for a small fee. This head replaces commonly cracked cylinder heads on all model Jeeps with a straight six motor. 4.0 L Also included is a new head gasket and complete gasket set for the...
  5. TJ Technical Discussion
    I've had a bad lifter for quite some time now and I am about to dive in and remove the head to get to it all. Is there anything else I should go ahead and prepare to replace while removing everything? 2004 TJ Wrangler X 4.0L ~130k miles Thanks in advance!
  6. TJ Technical Discussion
    :censored:!!!!! Had a day to wrench under the hood of the Ole Heep a Long and found this. At just over 20k of service on the cylinder head and plugs. Not too happy. Clearwater will say it was a bad install ...... the installer will say it was a bad head ....... etc., etc.. And for me...
  7. TJ Technical Discussion
    So last week the lower water hose blew on me. Out of stupidity I just figured it was because it was an old dry rotted hose that it busted. After installing a new hose and priming the hoses and filling with coolant. I started it up with no problem. Started heading down the road for a test drive...
  8. TJ Technical Discussion
    Ok, here goes. I've got a 2000 Wrangler 4.0 Sahara with 130,000 miles that I've been having some troubles with. Shortly after buying it, I discovered it had a cracked head. A good chunk of change later and I had a refurbished head that cracked within a 1,000 miles later. Yeah, the mechanic...
  9. TJ Technical Discussion
    Hey guys, I have a 2000 TJ 4.0 Liter with 145,000 miles. Over the past year, it has developed a tapping noise at idle RPMs. Higher RPM it subsides, I have read this is usually indicative of a sticky lifter. In addition, once the engine is warmed up, my oil pressure hovers around 10 PSI when...
  10. TJ Technical Discussion
    Alright guys, my engine light came on a month ago and the code was for a cylinder misfire. I replaced the spark plugs and checked wires and injectors. that didnt help. I brought it to my jeep dealership and this is what they said. "Customer states that the check engine light is on inspected...
  11. General Jeep Discussion
    i need a head for my 02 wrangler 2.5l any suggestions where to get one? i've searched all over and come up w/nothing. my local junk yard doesn't have one either. thanks
  12. TJ General Discussion
    Hi All, I am trying to remove the cylinder head from my 2.5L to replace the gasket and get the head resurfaced/inspected. I have removed the 10 head bolts but cannot get the head to budge. I have hit it on the side with a dead blow hammer and pried on it with a sizeable pry bar. Is there any...
  13. Texas Jeep Forum
    Does anyone know a good Machine Shop in the Carrollton/Lewisville, Denton (North DFW) area? I need to have my cylinder head planed.
  14. TJ General Discussion
    Just purchased a one owner 2000 Sahara 4.0, Auto, 88k miles. I purchased it from my boss for almost nothing knowing that it has an engine issue. It hasn't been driven in over 1.5 years. Here is what I know. Radiator blew and wifey of previous owner kept driving... Owner took to shop and they...
  15. General Jeep Discussion
    Bought a 91 YJ and I figured out pretty quickly that there was a bad head gasket. The cylinder head has been removed and cleaned only to find out it is warped in the middle. Been trying to find a local machine repair shop to have it resurfaced. I found a few, the one I like is a guy who has a...
  16. TJ Technical Discussion
    OK so changed spark plugs reset engine light went off, drove 80 miles radiator cracked cylinder misfire came back and the code changes every time its reset to p 0304 , p 0302, p 0301, p 0305 it flip flops back and forth those codes? Then i got the gas cap code switch the gas cap it seems to have...
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