2001 TJ loses power and acceleration going up hills

That 3 tire sizes over the basic stock size of 27,s so 3 inches. I would think weight would be a factor going up hill , can you reduce weight before you re gear?
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Hey thanks. I have removed the passenger and back seat. But overall not a whole lot of weight to remove. Plus eventually I will be adding camping and adventure gear so I still thing re gearing is the best option, but thanks for the advice.
 
Ouch, I was hoping that was the problem. I thought the TJ's came with 30" tires?
29, but the real problem is it came with a 2.5. I would put my regearing money into selling/ trading for a 4.0....that is geared correctly.
 
In my experience driving a 4 cylinder 5 speed on 4.10s (stock gearing) on 31s the tiniest hill would threaten to make me downshift to 4th, and I live in a very flat area. 4.10 and 31s is usually considered properly geared but that's for the I6 not the I4. Based on my experiences, the occasional person who posts why can't their 4 cylinder get up this or that hill, and after talking to another former TJ 4 cylinder owner, I would say this is all normal. You could regear to 4.88, but it's still going to be slow.
 
In my experience driving a 4 cylinder 5 speed on 4.10s (stock gearing) on 31s the tiniest hill would threaten to make me downshift to 4th, and I live in a very flat area. 4.10 and 31s is usually considered properly geared but that's for the I6 not the I4. Based on my experiences, the occasional person who posts why can't their 4 cylinder get up this or that hill, and after talking to another former TJ 4 cylinder owner, I would say this is all normal. You could regear to 4.88, but it's still going to be slow.
That is an honest post. I’m not sure why Jeep did a 4 cylinder with the heavier TJ’s. Not shaming anyone. The 4.0 isn’t the studmuffin legend makes it out to be either. It is sort of like the boring person at a party that won’t leave.
 
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That is an honest post. I’m not sure why Jeep did a 4 cylinder with the heavier TJ’s. Not shaming anyone. The 4.0 isn’t the studmuffin legend makes it out to be either. It is sort of like the boring person at a party that won’t leave.
The 2.5/2.4 might be a good option for people who just need a light trail toy. For some people the 4.0 was barely adequate, I think it's just enough power to have fun and not an ounce more.
 
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Yep don't be afraid to wind it out on hills. Don't look at the tach on a regular car with small tires and think those rpms are also appropriate on a Wrangler with big tires and aerodynamics like a barn door. I regularly get mine to 4K and wouldn't be afraid to go higher if needed.

I know this is an old post, but this just made me feel so much better about going over a pass in 3rd and pushing those rpm's.
 
Yep don't be afraid to wind it out on hills. Don't look at the tach on a regular car with small tires and think those rpms are also appropriate on a Wrangler with big tires and aerodynamics like a barn door. I regularly get mine to 4K and wouldn't be afraid to go higher if needed.

I know this is an older post, but this just made me feel so much better about going over a pass in 3rd and pushing the rpm's. Thanks!
 
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It's the 120 hp 2.5L engine trying to turn those 30" tires that is giving you a headache. If you re-geared to a proper ratio, it would solve your problem.

funny thing when I had my last 4cyl. TJ, I would tell people it's sad my bass boat has twice the horsepower my JEEP has ! :ROFLMAO: :ROFLMAO::ROFLMAO:
 
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Your Jeep is fine, these guys generally love to hate on the smaller displacement Jeeps. Feel free to ignore their comments, they'll probably go on and on. You probably need a tune-up or basic service. Your Jeep can maintain speeds well above what you have stated. Not going past 2800 rpm is completely not normal and any experienced mechanic will 100% agree.

I would check fuel pressure