Question about 1999 Jeep Wrangler

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99 jeep wrangler

Our 99 4 cylinder jeep wrangler, manual shift, seems to lack power going up hills and uses a lot of gas for that size motor, any suggestions?

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  • sasha403614 Jun 13, 2008

    The jeep now has begun sputtering when it is first started - takes it a few minutes to smooth out the idle - acts like it wants to die and when you push on the gas it smooths out but still lacks power and uses more gas than normal. Could it be the fuel pump or coil?

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Get a 6 cylinder motor drop in this is best gas saver for most vehicles 4 cylinders dont have the ability to push all the weight of a vehicle but runs smoothly
6 cylinders are as i put in words are evenly balanced for everyday use and not gas guzzler either

Posted on May 16, 2008

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Going up hill lack of power and smoke pulled over then started to go again didnt do it again on level ground what it might be


It will lack lots of power going up hill, especially if its a really steep one and you keep it in drive. Make sure you downshift to second, or fist if its really steep.

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Get the clutch slave cylinder and master cylinder looked at.One of the 2 has failed.If the pedal goes to the floor or is very loose,this is very likely the cause.Not an expensive fix.Hope this helps

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My 92 wrangler will shift into 4high but not 4 low.It seems to have some air flow at shift motor. Does this mean I need a shift motor?


yes thats what it sounds like....Cant really be sure. Seems like you know your Jeep go with your first choice.

Oct 03, 2009 | 1992 Jeep Wrangler

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4 wheel drive doesnt work.


Has this Jeep been modified at all?
It sounds like the shifter cable was reinstalled backwards.
Specifically the 4-Low "Not Climbing Well". 4-Low should give you the best torque and hill climbing ability.
Do you feel any "Binding" in the steering wheel (difficult to turn)?
Remember a Jeep uses real driveshafts and differentials to give you 4WD - you cannot engage 4WD or 4-Low on dry hard surfaces. It needs a little bit of slip between the wheels for turns.
Check you're fluids too.

Jul 11, 2009 | 1992 Jeep Wrangler

1 Answer

Jeep Just shuts off and also seems like it has a loss of power.


in a perfect world, computers and related systems are a great addition to the automotive industry...But, You would not dream of using your PC in the backyard, in the rain, snow and searing heat. Yet the system in your car is asked to do that daily. (would be nice if a little button like on a chicken would pop out of a failed component to tell you it's not well.....Your guesses are valid, but before you go out and buy parts, have a code scan done and see what's there. Codes give you a direction to begin looking, they don't get really specific, but when added to what you already see and know can be very helpful. Fuel pump problems don't show codes though so you may need to do a pressure test. CPS will sometimes throw a code, but they can also cause strange problems without doing that. The largest problem I see right now is that it starts right back up, giving you no time to do testing. The random on/off thing suggests the possibility of a bad connection either at the computer or ignition switch. You can try wiggling the harness a bit and see if you can get it to stall.
It would not surprise me if it took a while to find this problem as this is the type of thing that drives even good shops crazy.

Jun 18, 2009 | 1992 Jeep Wrangler

1 Answer

1998 jeep wrangler dont shift into 1st or reverse


I will bet it grinds when you try to engage first or reverse. When this happened on my car, I adjusted the clutch and it improved. You need about a half inch of free play when you first touch the pedal with your foot. If you have a slave cylinder, (hydraulic clutch). You may need to bleed the system. With air in the system, you can't get enough clutch to fully disengage the trans from the motor.(Clutch and pressure plate) It's like you only pushed down half way on the pedal. If it's not hydraulic, it should be adjusted with wrenches. If clutch is fine, It could be a loose shift linkage. It would seem extra sloppy when moving shifter, It would just not go in gear, with out the grinding.Hope this helps. lbreen

Apr 22, 2009 | 1999 Jeep Wrangler

1 Answer

90 Jeep wont turn over.


check clutch switch and starter relay in the power distribution box near the battery. Likely one of them has gone bad. Tell me what you find.

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1 Answer

5th. Gear


Sounds like you may have bent a shift fork or your cluster gear has some missing teeth on it now. I would venture to say that is it a bent shift fork. This will require the transmission be removed to gain access to inspect and repair.

Dec 06, 2008 | 1992 Jeep Wrangler

1 Answer

Jeep Wrangler Gas Consumption and Loss Of Power


If its using a lot more fuel than usual its almost garaunteed an 02 Sensor. Those are located on the Exhaust Manifold's, are about the size of your thumb, and generally have 2, or 3 wires coming from them. If you can, check them for operation before you replace them as sometimes they're kindof expensive.

May 16, 2008 | 1999 Jeep Wrangler

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