Does a 2.5L have a rev limiter? - JeepForum.com
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Go Back JeepForum.com > Models > Jeep Wrangler Forums > YJ Wrangler Technical Forum > Does a 2.5L have a rev limiter?

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Unread 09-13-2013, 01:43 AM   #1
baritone_mike
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Does a 2.5L have a rev limiter?

I keep telling my self it has to have a rev limiter, but doing a search does not give a definitive answer. I have found people in TJ's talking about a rev limiter but no one in a YJ seems to have hit theirs.

The highest I have knowingly revved my Jeep is 3,500rpm just messing around, anything above 3,000rpm did not seem to make a difference so I shifted.

This thread says the YJ does not have a rev limiter and the valves float around 6,200rpm.
http://www.jeepforum.com/forum/f12/2...imiter-178262/

This guy also throws out a 6,200rpm number.
http://www.jeepforum.com/forum/f12/4...7/#post7555698

This guy says, the Renix 4.0L does not have a rev limiter, but they are talking about Cherokees, and my 2.5L has a Renix computer.
http://www.jeepforum.com/forum/f11/d...8/#post2722981

So does anyone have a source that says that the YJ has a rev limiter (and where it kicks in)? Or does anyone need an excuse for a V8 swap in there 2.5L Jeep, please video tape.

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Unread 09-13-2013, 02:42 AM   #2
tommy450r
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Yes they have a rev limiter.. Not sure when it kicks in.. I keep mine on it all the time lol
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Unread 09-13-2013, 02:44 AM   #3
tommy450r
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Mine is a 94 got a buddy with a 92 they both have limiters
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Unread 09-13-2013, 02:55 AM   #4
baritone_mike
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The 94 and 92 are both multi port fuel injected, which came around the same time the 4.0L HO did. Anyone have a 87-90 2.5L? If the Renix 4.0L does not have a limiter (I have found 5 or 6 other threads that say they don't) I don't see why the Renix 2.5L would? It just seems like being fuel injected they would have put a limiter on it, which is apparently not always the case.
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Unread 09-13-2013, 05:20 AM   #5
grandboost98
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Ive never brought mine above 4500RPMs I dont think Id want to either lol
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Unread 09-13-2013, 05:56 AM   #6
Ripper3494
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When I had a 2.5 it definitely had a rev limiter and i used it frequently. If I remember correctly it was in the 6000s

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Unread 09-13-2013, 09:24 AM   #7
Tom95YJ
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Quote:
Originally Posted by Ripper3494
When I had a 2.5 it definitely had a rev limiter and i used it frequently. If I remember correctly it was in the 6000s

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IIRC it was about 6200rpm. My 95 kissed it a few times
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Unread 09-13-2013, 12:27 PM   #8
baritone_mike
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So the rev limiter is deep in the red, but both of you guys have 94 or 95 which is multiport. Any TBI guys on the rev limiter?
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Unread 09-13-2013, 04:01 PM   #9
Longview
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I was wondering this too because I have a 90TBI
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Unread 09-13-2013, 04:39 PM   #10
rykemc
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