Loses Power While Accelerating

KEN L

MASTER CERTIFIED MECHANIC
47,490 POSTS

So the computer did not need to be reset again? I have hard of the battery causing these problems as well. Great information though.

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Friday, August 3rd, 2018 AT 1:41 PM

LJCHAPMAN

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1 POST

I just bought a 88 jeep yj with inline 6 with 99,000 miles i'm having the same problem losiing power while accelerating. 1st time jeep owner just want to thank everone for their suggestions.

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Saturday, July 13th, 2019 AT 10:53 PM

CJ MEDEVAC

MECHANIC
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LJCHAPMAN,

Let's start a fresh new question.

Makes it easier for others with the same or similar issues when they use "search".

Ask for me if you want to, I'm pretty good with 258s in CJs.

The Medic

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Sunday, July 14th, 2019 AT 7:23 AM

TISSUEMAN

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10 POSTS

Well, I now have 150,000 miles. I have replaced the fuel injectors, ignition coil, crank position sensor, cam position sensor, throttle position sensor, both O2 sensors, two EMC's, new exhaust header, fuel pump, and I am sure lots of other bits. Acceleration is better but the motor is still a dog. It wont go above 75. Never gets into 5th gear (axle ratios - I know). Generally speaking, I have never made a significant step change in performance. I suspect the tires are killing what power the engine every had.

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Wednesday, July 17th, 2019 AT 6:11 PM

KEN L

MASTER CERTIFIED MECHANIC
47,490 POSTS

It sounds like you have a clogged catalytic converter. To be sure here is a guide to help confirm the issue:

https://www.2carpros.com/articles/how-to-test-a-catalytic-converter

Please run down this guide and report back.