Horse Power loss around 3000 rpms?

98 jeep wrangler with a 2.5 ltr 5 speed.
I drove on the interstate this morning and didn't really notice a severe change to the response in power. however this evening on my way to a club, i couldn't get over 60 mph. with the exception of the lower gears 3000rpms is dificult to acheive. (typcal idles around 900rpms) in 4th and 5th gear around 2500 rpms is about as high as it will go. in addition to this while driving in 3rd gear and trying to go higher then 3000rpms the engine begins to sputter, but doesn't die.
when in nuetral or with the clutch depressed the engine will respond well to changes in the gas pedal. But with resistence to the engine the above results apply.
having only a 2.5 ltr its never been a power house. but i only really had a problem doing 70-80 with heavy winds or the top off (different aerodynamics.)
So i'm asking for hints for what to look for, or ideas to resolve the problem. thanks for reading and any help you may offer.
you were all wrong, so i'm putting it up to a vote. i discovered the problem is in my catalitc converter. the porcelyn had broken free and was clogging the exhaust smotthering the engine.
And to the guy that said i should check my tranny fluid…. FYI there isn't a dip stick for 5 speeds, for the reason that they don't need to be checked… only automatics need to be checked. thanks thou.

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3 Responses to Horse Power loss around 3000 rpms?

  1. guitardan June 12, 2009 at 12:52 pm #

    I would check the fuel filter out first if I were you. It's easy to find and usually all you have to do is follow the fuel line coming from the gas tank and look by the frame underneath your jeep. They can be disconnected by either wrenches or a quick-connect fitting. There should be a arrow on the filter (describing which way the fuel flows). This may sound silly but it's the only way to tell if it's bad or not just blow through it. If you can feel air coming out of the opposite end then it's still good. If you can't get any air to go through it then replace it. Because it sounds to me like your jeep is starving itself for fuel at higher rpm's when it's under a load like going up a hill on the interstate. Do that and see what happens. If that doesn't help it out any you may want to take it to a transmission shop.

  2. sirk June 12, 2009 at 12:52 pm #

    change your fuel injector pump and check the tranmission oil level

  3. spotlite June 12, 2009 at 12:52 pm #

    your fuel filter. consult your owner's manual and learn the maintenance schedule on ur jeep, as it can get very costly, if u r a reactive maintenance person. do preventive.