the turtle - JeepForum.com
 3Likes
Reply
 
LinkBack Thread Tools
post #1 of 19 Old 08-02-2021, 05:36 AM Thread Starter
djm609
Registered User
1995 YJ Wrangler 
 
Join Date: Jul 2021
Location: Cape May Court House
Posts: 9
Garage
the turtle

i have a 95 yj with the 2.5 it will not go over 50 mph. what is going on


Always wrenching
djm609 is offline  
Sponsored Links
Advertisement
 
post #2 of 19 Old 08-02-2021, 06:22 AM
gutthans
Registered User
 
gutthans's Avatar
1995 YJ Wrangler 
 
Join Date: Jun 2018
Location: Deland
Posts: 1,287
Garage
Take it out of first gear?

Really, a little more detail type stuff would be helpful here...
JD Blaine likes this.
gutthans is offline  
post #3 of 19 Old 08-02-2021, 06:50 AM
cas6969
Registered User
 
cas6969's Avatar
1988 YJ Wrangler 
 
Join Date: Jul 2020
Posts: 284
How big are your tires?







5 speed? With mine, when I first started driving it, probably the first 6-8 months honestly, I was staying in 1st and 2nd too long before shifting, and not staying it 3rd and 4th long enough before shifting. Those changes made a huge difference for me.

Silicone, the thinking man's duct tape.
cas6969 is offline  
 
post #4 of 19 Old 08-02-2021, 08:17 AM Thread Starter
djm609
Registered User
1995 YJ Wrangler 
 
Join Date: Jul 2021
Location: Cape May Court House
Posts: 9
Garage
I t doesnt matter how i shift, i have tried it just wont go above 50. i am running 31,s

Always wrenching
djm609 is offline  
post #5 of 19 Old 08-02-2021, 08:37 AM
EABiker
Registered User
1989 YJ Wrangler 
 
Join Date: Dec 2004
Location: Frederick, MD
Posts: 1,831
If the speedometer gear in the transmission has not been changed after going to 31's, you are actually going 55mph when the speedometer reads 50.


Hey, every little bit helps!
EABiker is offline  
post #6 of 19 Old 08-02-2021, 09:47 AM
grandboost98
Registered User
 
grandboost98's Avatar
1989 YJ Wrangler 
 
Join Date: Aug 2010
Location: Essex
Posts: 4,425
Garage
Have you done any diagnosing yet? Whens the last time you had a tune up? Brakes dragging? wheel bearings shot? trans/tcase/diff fluids all good? We need a little more info to help you out

89 Wrangler-3.5" HD BDS lift,M.O.R.E HD 5/8" booms on 35" KM2s
99 Cherokee-2 door,5" lift on 35" KM2s
04 Grand Cherokee Overland
72 Chevy Nova-in progress

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

grandboost98 is online now  
post #7 of 19 Old 08-02-2021, 10:07 AM
whodatschrome
Registered User
 
Join Date: Apr 2020
Posts: 85
You definitely need to find a steeper hill to drive on...i highly recommend a downhill with the 4cyl engine. The steeper the better.
whodatschrome is offline  
post #8 of 19 Old 08-02-2021, 11:14 AM Thread Starter
djm609
Registered User
1995 YJ Wrangler 
 
Join Date: Jul 2021
Location: Cape May Court House
Posts: 9
Garage
So back story is, I just picked this thing up 2 weeks ago. first thing i did was change all the fluids. doing a full tune up on it tonight. working on finding a 6 cylinder and trans to swap. Trans sync's are starting to go in 3rd and 4th, so might have to do a rebuild on a turd.

Last edited by djm609; 08-02-2021 at 11:16 AM. Reason: added more
djm609 is offline  
post #9 of 19 Old 08-02-2021, 04:45 PM
gutthans
Registered User
 
gutthans's Avatar
1995 YJ Wrangler 
 
Join Date: Jun 2018
Location: Deland
Posts: 1,287
Garage
To my knowledge, there are several possibilities and I'll have to list all of the ones I can think of because you really haven't given out ANY good information:
#1 is too much back pressure from a clogged cat or failing muffler. 1st and 2nd gear are usually OK and the symptoms of power loss start to show in 3rd/4th and 5th is a total loser.
#2 Tire size needing a change of speedo gearing
#3 Tire size too big (31's are about the max for a stock 2.5)
#4 Fuel flow issues from a bad interior fuel filter sock or line trash reducing volume
#5 Bad O2 sensors messing air/fuel ratio up

This IS NOT a COMPLETE list...just the ones I have personally found on my old 2.5
BTW, IF you are having this much trouble diagnosing the current problem, I wouldn't consider a six swap, just go buy a running six jeep and fix it up, your problems are less likely to get worse.
gutthans is offline  
post #10 of 19 Old 08-03-2021, 08:21 AM Thread Starter
djm609
Registered User
1995 YJ Wrangler 
 
Join Date: Jul 2021
Location: Cape May Court House
Posts: 9
Garage
thanks for all the advice (even the sarcastic). Little by little i will get it figured out

Always wrenching
djm609 is offline  
post #11 of 19 Old 08-03-2021, 01:07 PM
gutthans
Registered User
 
gutthans's Avatar
1995 YJ Wrangler 
 
Join Date: Jun 2018
Location: Deland
Posts: 1,287
Garage
Quote:
Originally Posted by djm609 View Post
thanks for all the advice (even the sarcastic). Little by little i will get it figured out
I wasn't being sarcastic....but it is YOUR Jeep so...have at it!
gutthans is offline  
post #12 of 19 Old 08-03-2021, 02:41 PM
bruinjeeper
Moderation in Moderation
 
bruinjeeper's Avatar
1995 YJ Wrangler 
 
Join Date: Jun 2013
Location: Toronto
Posts: 10,465
gots 99 problems but my 2.5L ain't one

~YJOTM MAY '16, JULY '19~


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
bruinjeeper is offline  
post #13 of 19 Old 08-03-2021, 10:07 PM
93YJ4FUN
Registered User
1993 YJ Wrangler 
 
Join Date: Mar 2021
Location: SoCal
Posts: 369
Quote:
Originally Posted by djm609 View Post
thanks for all the advice (even the sarcastic). Little by little i will get it figured out
There is a lot of great advice to be had on the forum. The biggest issue is that without a fuller understanding of your Jeep and your capabilities, it's very hard to help and give that information.

If you ask general questions, you'll get general answers that aren't going to be as helpful.

Guthans was correct that it can be a lot of issues. I can think of a dozen myself without being a guru like some of these guys are.

It could be your
Gear ratio
Low compression
Anything that Guthans suggested
Weak fuel delivery
And many others

How comfortable are you with working on cars? You mentioned swapping in a 4.0 and rebuilding a transmission. Are you planning on doing it yourself or having someone else do it?

Better questions, better information, better answers, better results.

People here are willing to give you as much help as they can with what you give them to work with.

I have seen this at work. Good luck on getting it driving better.
93YJ4FUN is offline  
post #14 of 19 Old 08-04-2021, 09:05 AM Thread Starter
djm609
Registered User
1995 YJ Wrangler 
 
Join Date: Jul 2021
Location: Cape May Court House
Posts: 9
Garage
I am Very comfortable working on my jeep. I am not a professional mechanic but have been wrenching for over 20 years and have a full shop at my house. i checked compression last night and all good there. i have narrowed it down to the cat. Since it is 25 yrs old and doesnt get inspected it is coming out. T he reason i bought this particular jeep is that the frame is immaculate. not a bit of rust. Very hard to find here in Jersey.

Always wrenching
djm609 is offline  
post #15 of 19 Old 08-04-2021, 11:34 AM
93YJ4FUN
Registered User
1993 YJ Wrangler 
 
Join Date: Mar 2021
Location: SoCal
Posts: 369
Let us know how that goes. Hopefully that'll solve your issue.
93YJ4FUN is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the JeepForum.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.



Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome