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engine 4.0
1-20 of 21 Results
  1. TJ Tech Forum
    Hey everyone, I recently blew a hole in the side of my TJ 4.0 engine block and I am looking into replacing it myself. I have all of the tools and skills needed but I can't find anywhere that gives a good explanation of what seals I need to replace. All of the engine seal repair kits seem to come...
  2. TJ Tech Forum
    Been having some problems recently with my 2006 Unlimited. To summarize: 1) I can open the throttle just about all the way and it refuses to accelerate. The rpm will bounce back and forth between 2k and 2.5k over and over. Then, the rpm will suddenly climb to 3.5k or 4k. 2) It shifts into...
  3. TJ General Discussion Forum
    My 03 TJ has had a loud engine whistle for some time now but it only occurs when cold outside most of the time. It wont start until the engine is running for about 5 to 10 mins. It will squeal until i press down on the gas and start again when i let my foot off. It gets progressively louder...
  4. YJ Tech Forum
    I am looking for help with the interfacing engine controls.......injection, cpu,spark,sensors wiring from 1995......is there any kind of pre made harness or diagram out there ..any help would be appreciated
  5. JK Tech Forum
    As cooler weather begins, I notice there is a dry grinding start to my 2010 JK. Only happens in cold weather, and it grinds worse as it gets colder and only upon start up. Ive tried the more expensive spill-back valve on the oil filter, but it didn't work. should i change the weight of the oil...
  6. TJ Tech Forum
    Hello, Hoping someone can help me out with this. My 97 Jeep TJ is running cold all the time. (started about 3 months ago) The gauge gets up to about 60C/140F but won't get any warmer. The heater is also not putting out much heat when it gets to this temp. I replaced the water pump about a year...
  7. TJ Tech Forum
    I have an 89 YJ with the 2.5/5 speed. For a while now I've been thinking about doing a 4.0 conversion. It just seems that 4.0 YJs are almost nonexistent around here. There's a place a little ways from me that specializes in Jeep parts. I talked to them a week or two ago and he said the only 4.0...
  8. YJ Tech Forum
    I have an 89 YJ with the 2.5/5 speed. For a while now I've been thinking about doing a 4.0 conversion. It just seems that 4.0 YJs are almost nonexistent around here. There's a place a little ways from me that specializes in Jeep parts. I talked to them a week or two ago and he said the only 4.0...
  9. TJ Tech Forum
    So the other day my '03 Sport started making a clicking sounds (that I could feel in the gas pedal) when I would start it for the first time in the day. The clunky clicking would only happen when the car was moving forward. Even when I would have the clutch pushed in or the Jeep would be neutral...
  10. TJ Tech Forum
    I'm new, so I'll do my best to include ALL of the information. Let me start by saying – I am not mechanically inclined at all – no experience, tools or place to work even if I was... 99 TJ (just over 135K miles), 4.0 Manual, 4 inch lift - Third Owner, owned her almost 6 years now... She is my...
  11. General Jeep Discussion
    I had a high pitched squeal coming from the engine after the engine was warm. The intensity of the squeal changed based on acceleration and other engine load factors (going up hills, changing the amount of throttle, etc) I found that generally the pitch was louder when the engine was warm and...
  12. YJ Tech Forum
    Hey need some information here. I got a 1995 jeep with a 2.5l 4 cylinder. The plan is to swap it out for another 4.0l v6 jeep engine. My main question is the new engine going to connect to the old transfer case? Is there going to be any other big expenses with doing this? The budget is kind of...
  13. TJ General Discussion Forum
    since i change lifter when i start the engine the rpm go at the top. I stop the engine. i look for vaccum leek i don't find it. i try the reset ecu and don't change. do you have any idee
  14. TJ Tech Forum
    I have had no luck finding any fixes for this. First off my Speed o doesn't work. i have done the test on the speed o cluster and sensor and they work. Second my cruise control/brake switch has a code that says it is getting high voltage. Lastly Engine and transmission throwing overheating...
  15. YJ Tech Forum
    I've got a '94 YJ Renegade, it's been completely tuned up with all of the latest and greatest, that I could afford. 1 month after spending my last dime to get this done, I hear a knock. It's the "oh crap, I need a new engine knock!" So does any fellow JEEP owners know where I could get a used...
  16. YJ Tech Forum
    I have a 1993 Wrangler YJ, 4.0 5 spd, 4" suspension lift and about 86,000 miles on the odo. I am experiencing a sputter around the 50-60 mph range. I have replaced the fuel filter, pump and regulator. Appears to be worse at the half and blow tank mark. Its a random event, I tried seeing if it...
  17. TJ Tech Forum
    I have a issue that seems major... Burning oil and oil pressure gauge drops out. I changed my oil on Friday the 15th using 20/50 and tonight was 3 quarts or more low. I noticed when I changed the oil on Friday that chunks were in the oil. I pulled them chunks out. I inspected them A day or so...
  18. YJ Tech Forum
    When I first bought my 1991 jeep wrangler islander 4.0 manual fuel injected six cylinder with 99,000 mi, it was running without any problems. Shifted smooth and ran great. Problem: Eventually it started to smoke out the tailpipe. The smoke was white and it was sputtering, not a constant...
  19. TJ General Discussion Forum
    hey yall i got a 1997 jeep wrangler 4 cylinder. has 140,000 miles and runs just fine so will be a little while before this happens. BUt obviously the 4 is just not strong enough for my DD. I know people say to just go with the 6 that buying a jeep with the 6 is easier but i have my doubts. so...
  20. TJ Tech Forum
    I have a 2005 Jeep wrangler 4.0.. It cuts out at around 2300 to 2900 rpms whenever It's in drive. I took it to see what codes I popped and I replaced the crank sensor, cam sensor, tps, and checked my fuel pressure it's at around 60.. I also just replaced 2 of the 4 o2 sensors today the bottom...
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