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Jeep Wrangler Maintenance and Repair Questions (1997 - 2006)



  • mac24mac24 Posts: 3,910
    If your oil pressure was really that low your engine would have seized by now. Most likely you have a faulty oil pressure sensor.

    However, as you've continued to run your Jeep when it was indicating a terminal problem, is there really much point in fixing the gauge issue? Having an accurate gauge is only useful if you're going to take notice of it. :sick:
  • robby7robby7 Posts: 4
    Jon, did you find the cause of your problem? I'm having the same problem too!!
  • robby7robby7 Posts: 4
    I post a problem concerning the Catalytic Converter. At the time money was a bit tight and couldn't afford the shop. Now I have the money but the jeep won't start to get the jeep to the shop. :cry: Its been sitting for 3 months and boy those 3 months added more problems. The jeep won't start at all!! Charged the battery, nothing. Put in a working battery from a different car, nothing. Check the fuses, ok. Took a spark plug loose to see a spark, which I don't. Could it be the fuel pump? If, so, how can I actually tell its the fuel pump? Can it be the gas filter? I'm thinking maybe its the module? :confuse: Any ideas would be appreciated!! Thanks for the input.
  • mac24mac24 Posts: 3,910
    Any codes?
  • burntupburntup Posts: 64
    You say that the jeep will not start.
    Does the starter engage and spin the crank?
    You also are wondering if it is the fuel pump.
    Are you getting fuel at the injectors?
    Ignition module.
    If you have no spark that is where I would start.
    Do you really not have spark or can you just not see it.
    If you are trying to look at spark in the daylight it's pretty hard to see.
    If you have a friend dumb enough have him hold the spark plug while you crank the engine over.
    Have a cold beer handy because if you are getting spark you will need a peace offering.
    It is also a good thing to be faster or bigger than this x-friend.
    Just as a guess I think the most likely problem starting up one of these fine JEEPs after a 3 month hibernation would be the fuel.
    I would try priming the vehicle.
    Try pouring a little fuel down the throat and crank the engine over.
    If it starts then a lack of fuel is the problem.
    You might have to do this several times.
    Remember gasoline is dangerous.
    Use only a little and use common sense.
    It can hurt you as bad as a friend that you just subjected to electrical shock.
    Good luck.
  • erickplerickpl Posts: 2,735
    Go for the simple solutions. It's been sitting 3 months. What can happen in 3 months of storage?

    Dead battery? Checked
    Does it turn over?
    Spark? No? Check the wiring from the battery. Rodents sometimes eat through or if your battery had issues, the acid could eat through em. Trust me on this one. :)
    Do you have gas? If so, how much was in there? Check the schrader valve on the driver side and see how much gas, if any comes out.

    But it sounds more electrical than anything. With no spark, I'd suspect: Battery, wires, distributor, starter. If your Jeep as a distributor, open it up and check for broken parts in the cap.

  • 39jeeper39jeeper Posts: 2
    I have a Jeep 2004 Wrangler Unlimited, 4.0 engine,
    auto trans, genuine gas hog. Has anyone foung a way to improve gas mileage.???? Clue me in.
  • mac24mac24 Posts: 3,910
    genuine gas hog

    So what mpg are you getting? How are you calculating it, and have you checked the accuracy of your odometer?

    Best mileage will be obtained by a combination of vehicle condition and driving technique.
    Clean air filter, clean and correctly gapped plugs, properly inflated tires, brakes that aren't dragging, synthetic lubricants, etc., etc.
    Aftermarket accessories like bumpers, tire carriers, winches, roof racks etc., all contribute to poorer mpg through added weight and wind resistance.

    You don't have to drive slowly everywhere, but heavy braking and acceleration will hurt. Good driving technique includes anticipating traffic and stop lights. Keep rolling at all costs, and keep top speed below 60mph. Use A/C and electrical accessories sparingly.

    So again, what mpg makes you consider your '02 a gas hog?
  • tyoshutyoshu Posts: 31
    I think the the 06's only came with a 12 month, 12K warranty since it was the last year of the TJ.
  • skyking49skyking49 Posts: 112
    LOL...they couldn't and wouldn't do that. I have an 06 wrangler x and it has a 36,000 mile or 3 year warranty which is standard.
  • mac24mac24 Posts: 3,910
    LOL...was that a delayed April 1st. post?

    Doubtless we'll now be constantly hearing that someone read on a forum 'somewhere' that '06 TJs definitely only have a 12/12 warranty. :shades:
  • 39jeeper39jeeper Posts: 2
    am making 13 mpg on Wrangler, I have tried all the suggestions, and it has been checked by dealer for any other abnormalities. It checks out ok.
    I am an experienced driver and use correct driving policies. Still no change in mileage. I have driven Jeep products for many years, and find this one to be the worst in gas usage, am just looking for any tech way to improve it.
  • mac24mac24 Posts: 3,910
    Actually, 13mpg is at the lower end of acceptability. That doesn't mean you have to like it, but on the other hand you're unlikely to ever get better than a true 15mpg from the auto.
  • bman73bman73 Posts: 1
    The automatic Wrangler is geared to high if you chunk the 373 gears and put in 411 you'll get 3 to 4 miles better
  • I just bought a 1999 Jeep Wrangler and the dealer said he just put in a new manifold. Month later I have this loud rattle under the Jeep, which increases with acceleration, but after driving around for awile the rattle seems to diminish. Some one suggested removingthe heat shield. Any other suggestions?
  • erickplerickpl Posts: 2,735
    Bang on your catalytic converter with a rubber mallet. If it sounds like marbles rolling around, you get to replace the catalytic converter. You MAY be eligible for the recall/TSB that addresses the catalytics failing. Sorry, don't have the number for it though.

  • mac24mac24 Posts: 3,910
    The automatic Wrangler is geared to high if you chunk the 373 gears and put in 411 you'll get 3 to 4 miles better

    I disagree. The 3.73 is very well matched to the characteristics of the automatic transmission when used with tire sizes up to 31".

    Even if an increase of 3-4mpg were possible, it would take a very long time to recover the expenses incurred for the purchase and installation of the parts required for re-gearing two axles, even at todays gas prices.
  • mac24mac24 Posts: 3,910
    As erickpl said, it could be the cat. However if it is the heat shield rattling, which is quite possible, have it secured properly rather than removing it.

    The Wrangler's floor gets pretty hot as it is. Without carpets you couldn't put your bare feet on it. Allowing it to get many times hotter won't benefit you in any way.
  • Thank you for all this advice!!
    Very Helpful!
  • I have a Jeep Wrangler 1997 and catalytic converter needs replacing. I did see online Chrysler Extended the warranty on the catalytic converters 10 years/120K miles. This was from a California EPA EPA settlement. Does this apply to only CA jeeps or is this warranty nation wide. I called 2 dealerships, they punch in my VIN # and they say not covered under a recall or extended warranty. I guess I will have to pay for the repair.
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