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Old 03-05-2010, 02:38 AM   #1
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New Jeep Owner, needs advice

2000 Jeep Wrangler SE
4 cyl. 2.5
Auto Trans. 5 speed I think.
3" Teraflex lift
35" Mickey Thompson
83,000 miles on this engine.
.. .
This is my first Jeep. Love it so far. Although I miss my 74 Scout
I think my motor taking a dump.
Mainly bought this jeep to get my mountain bike to the top of the mountain so I can ride down it. . . Bought it about a month ago, and according to the mechanic that has been trying to fix it this last week, the piston is failing. He replaced all the lifters and rod bearings to get rid of this horribly loud ticking noise that speeds up with engine, but that didn't get rid of the noise. We pulled the spark plug out of number 2 and the noise stopped. No noise when it idles. I'm getting extremely bad gas mileage, probably under 10mpg. Wondering if switching to a 6 cyl. would give me better gas mileage with more power pushing those big tires? I'm going to be having a little extra dough coming my way and wondering what the best option would be.

-New Motor?
-4 cyl. or 6 cyl? ...
-Rebuild?


Thanx NightHawk

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Old 03-05-2010, 03:16 AM   #2
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Auto trans I think is probably a four speed. If you are going to replace the motor you may as well put a 4.0L in it. What gears are you running? I would think you would need at least 4.56 gears and with those tires. 10 mpg is about right because I am sure you foot is mashed to the floor most of the time.

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Old 03-05-2010, 04:16 AM   #3
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The Auto is probably a 3 speed.
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Old 03-05-2010, 04:56 AM   #4
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That sounds unnerving. Um...I'd start off cheap then work your way up. Check the engine oil pressure. After that, check out the rod bearings or crankshaft bearings. Make sure nothing is failing there. Maybe try an engine flush and oil change. Valve might be sticking, and since you just bought your Jeep, the doober that had it before might have in the wrong oil or it's too thin.

Hope this helps and good luck with your Jeep.
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Old 03-05-2010, 07:28 AM   #5
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In the 2000, the auto has a 3 speed.
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Old 03-05-2010, 07:37 AM   #6
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Check the compression on each of the cylinders. I am betting #2 has little to none. New cars have in the area of 130-140 psi. Once it drops below 80 psi or so engines become difficult to start
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Old 03-05-2010, 10:46 AM   #7
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Quote:
Originally Posted by Fweaky View Post
Auto trans I think is probably a four speed.
I'm a goober, its a three speed. 30/32RH
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Old 03-05-2010, 04:13 PM   #8
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did you purchase is from a dealer? if so, then before you go spending money for repairs, find out what can be done legally (if you bought it the way it was and didnt modify it), as i just put in another post, some states have what is known as the "lemon law", meaning you have rights if you purchased it from a dealer and it has, many unknown at the time, issues. i found this site and its fairly informative on the "lemon laws" and what states they apply to. Lemon Law Statutes, Brochures, and Fact Sheets hope this helps & good luck
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Old 03-05-2010, 04:16 PM   #9
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Quote:
Originally Posted by Nighthawk View Post
Mainly bought this jeep to get my mountain bike to the top of the mountain so I can ride down it. .
How does the Jeep get down?


(I realize this is not the main point of your thread, but trust me, I can't give good advice on engine problems. I'm sympathizing with you though!).
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Old 05-13-2011, 12:37 AM   #10
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K guys I never knew this post went through.. lol. stupid computers.... Jeep still runnin'. but knock still there. I posted a new thread. Thanks!
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Old 05-13-2011, 12:52 AM   #11
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If I were in your position, I would cut my losses and sell it. Obviously don't tell a potential driver it runs, but sell it as is. I just don't feel comfortable dropping that kind of money into a four cylinder.

If you've got better than a D35 in the rear, keep that. If the tires are in good condition, keep those too. You can re use them when you get another Jeep. I suggest grabbing a 4.0L if you're looking to run 35s and you're driving up a lot of hills.

That's just what I would do. I don't know your exact situation, but that's what I would do in my current situation.
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Old 05-13-2011, 01:30 AM   #12
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Recommend engine swap 4.0L with Auto trans
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Old 05-13-2011, 02:50 AM   #13
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4.0 Swap

Or a Hemi swap if you're man enough

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