Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here XJ (84-01)
All OEM related XJ specific tech. Examples, no start, general maintenance or anything that's stock.

highway rpms

Thread Tools
 
Search this Thread
 
Old 04-24-2016, 08:18 PM
  #1  
Newbie
Thread Starter
 
Some Guy's Avatar
 
Join Date: Feb 2016
Location: Iowa
Posts: 29
Likes: 0
Received 0 Likes on 0 Posts
Year: 97
Model: Cherokee
Default highway rpms

Anyone running a automatic, 3.55s and 31s? What are your 60mph rpms? My 97 country runs 2750 rpms at 60 mph. Seems high to me. (My 89 with 5 spd and 30s runs 1800 at 60. Idk gear ratio.)
The trans shifts 3 times. 1-2, 2-3, 3-od. I've adjusted the TV cable.
Old 04-24-2016, 09:53 PM
  #2  
CF Veteran
 
MonacaYankee's Avatar
 
Join Date: Mar 2010
Location: Georgia
Posts: 1,438
Likes: 0
Received 7 Likes on 7 Posts
Year: 99 94
Model: Cherokee (XJ)
Engine: I6
Default

2750 is way to high. Should be a 4th gear then tq lock up.
My stock 99 indicates 2250 and 70 on the dash but gps says 66 mph My 94 with 3.55 and 31s is around 2100 at an actual 70 mph.
Old 04-24-2016, 10:33 PM
  #3  
Newbie
Thread Starter
 
Some Guy's Avatar
 
Join Date: Feb 2016
Location: Iowa
Posts: 29
Likes: 0
Received 0 Likes on 0 Posts
Year: 97
Model: Cherokee
Default

Originally Posted by MonacaYankee
2750 is way to high. Should be a 4th gear then tq lock up.
My stock 99 indicates 2250 and 70 on the dash but gps says 66 mph My 94 with 3.55 and 31s is around 2100 at an actual 70 mph.
That's what I thought. I don't think the lock-up is working. When I let off to zero throttle at highway speeds, rpms drop down to 2k.
So what am I looking for to remedy this? I don't know much about transmissions.
Old 04-25-2016, 08:25 AM
  #4  
Newbie
 
LittleBlackJeep's Avatar
 
Join Date: Mar 2016
Location: Indiana
Posts: 10
Likes: 0
Received 0 Likes on 0 Posts
Year: 1999
Model: Cherokee
Engine: 4.0
Default

It honestly could just be your tranny fluid, if it's too old or it's low it could make the trans do some weird things.
Old 04-25-2016, 02:20 PM
  #5  
Seasoned Member
 
jpmarine6786's Avatar
 
Join Date: Apr 2015
Location: Denver, Colorado
Posts: 375
Likes: 0
Received 2 Likes on 2 Posts
Year: 2000
Model: Cherokee
Engine: 4.0
Default

Mines about 1800-1900 rpm at 60. GPS verified. Check tranny fluid condition/level. Any lights? At that rpm the tranny isn't in OD at all. Even in OD with out the tq locked it would be around 2300.

Last edited by jpmarine6786; 04-25-2016 at 02:25 PM.
Old 04-25-2016, 03:42 PM
  #6  
::CF Moderator::
 
cruiser54's Avatar
 
Join Date: Aug 2011
Location: Prescott, Az
Posts: 43,937
Received 1,540 Likes on 1,247 Posts
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Default

Originally Posted by Some Guy
That's what I thought. I don't think the lock-up is working. When I let off to zero throttle at highway speeds, rpms drop down to 2k.
So what am I looking for to remedy this? I don't know much about transmissions.
It's electronically controlled. Look up near the top of the brake pedal and see if the torque converter lockup switch is adjusted properly.
Old 04-25-2016, 05:17 PM
  #7  
Newbie
Thread Starter
 
Some Guy's Avatar
 
Join Date: Feb 2016
Location: Iowa
Posts: 29
Likes: 0
Received 0 Likes on 0 Posts
Year: 97
Model: Cherokee
Default

Originally Posted by cruiser54
It's electronically controlled. Look up near the top of the brake pedal and see if the torque converter lockup switch is adjusted properly.
I put a new one on last week per the advice of someone on this site. No effect. I'll do a fluid change and see what happens.
Old 04-25-2016, 07:48 PM
  #8  
Newbie
Thread Starter
 
Some Guy's Avatar
 
Join Date: Feb 2016
Location: Iowa
Posts: 29
Likes: 0
Received 0 Likes on 0 Posts
Year: 97
Model: Cherokee
Default

Originally Posted by jpmarine6786
Mines about 1800-1900 rpm at 60. GPS verified. Check tranny fluid condition/level. Any lights? At that rpm the tranny isn't in OD at all. Even in OD with out the tq locked it would be around 2300.
No lights.
Can someone tell me how many shifts it should make?
Old 04-25-2016, 08:24 PM
  #9  
CF Veteran
 
MonacaYankee's Avatar
 
Join Date: Mar 2010
Location: Georgia
Posts: 1,438
Likes: 0
Received 7 Likes on 7 Posts
Year: 99 94
Model: Cherokee (XJ)
Engine: I6
Default

Originally Posted by Some Guy
No lights. Can someone tell me how many shifts it should make?
1-2-3-4 OD lockup

Last edited by MonacaYankee; 04-25-2016 at 08:27 PM.
Old 04-25-2016, 08:49 PM
  #10  
CF Veteran
 
DFlintstone's Avatar
 
Join Date: Aug 2011
Location: Nor-Cal Coast
Posts: 10,489
Likes: 0
Received 17 Likes on 17 Posts
Year: 90,84
Model: Cherokee
Engine: 4.0,2.5
Default

There are three solenoids in the AW-4. One is the torque converter lockup, it sounds you are lacking. The solenoid resistance can be checked at the trans plug....

For me it's pretty tough to feel and count the shifts. BAD tranny!

Last edited by DFlintstone; 04-25-2016 at 08:57 PM.
Old 04-25-2016, 09:31 PM
  #11  
Newbie
Thread Starter
 
Some Guy's Avatar
 
Join Date: Feb 2016
Location: Iowa
Posts: 29
Likes: 0
Received 0 Likes on 0 Posts
Year: 97
Model: Cherokee
Default

Originally Posted by jpmarine6786
Mines about 1800-1900 rpm at 60. GPS verified. Check tranny fluid condition/level. Any lights? At that rpm the tranny isn't in OD at all. Even in OD with out the tq locked it would be around 2300.
OK I lied. There ARE codes stored in the computer. For some reason, the check engine light does not come on, even when cycling the key.
The codes are:
-P0505 idle control system
-P0700 transmission control system
-P0705 transmission range sensor/ switch circuit malfunction (PRNDL Input)
I feel like an idiot that I didn't check codes earlier.
Old 04-25-2016, 10:06 PM
  #12  
Newbie
Thread Starter
 
Some Guy's Avatar
 
Join Date: Feb 2016
Location: Iowa
Posts: 29
Likes: 0
Received 0 Likes on 0 Posts
Year: 97
Model: Cherokee
Default

So after I read the codes I checked the fuses again. Low and behold I found a missing fuse in the #10 slot. Trans, etc,etc. Dont know how i missed it the first 2 times. Put in appropriate fuse (15a), unplugged battery to reset computer, drank a PBR.
NOW I have overdrive! 1900 at 60.
I sure appreciate everyone's help! Can't tell you how nice it is here to have folks who care about other people's proplems. If only the rest of the world...
Old 04-25-2016, 10:35 PM
  #13  
::CF Moderator::
 
cruiser54's Avatar
 
Join Date: Aug 2011
Location: Prescott, Az
Posts: 43,937
Received 1,540 Likes on 1,247 Posts
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Default

Originally Posted by Some Guy
So after I read the codes I checked the fuses again. Low and behold I found a missing fuse in the #10 slot. Trans, etc,etc. Dont know how i missed it the first 2 times. Put in appropriate fuse (15a), unplugged battery to reset computer, drank a PBR.
NOW I have overdrive! 1900 at 60.
I sure appreciate everyone's help! Can't tell you how nice it is here to have folks who care about other people's proplems. If only the rest of the world...
Beer. the cause and cure of all the world's problems.
Old 04-25-2016, 11:03 PM
  #14  
Seasoned Member
 
jpmarine6786's Avatar
 
Join Date: Apr 2015
Location: Denver, Colorado
Posts: 375
Likes: 0
Received 2 Likes on 2 Posts
Year: 2000
Model: Cherokee
Engine: 4.0
Default

Glad to hear you fixed it.
Old 04-26-2016, 05:58 AM
  #15  
Newbie
Thread Starter
 
Some Guy's Avatar
 
Join Date: Feb 2016
Location: Iowa
Posts: 29
Likes: 0
Received 0 Likes on 0 Posts
Year: 97
Model: Cherokee
Default

Originally Posted by jpmarine6786
Glad to hear you fixed it.
No overdrive this morning. Drove it 8 miles last night with 0 problems. Didn't have time to check fuses, etc when I got to jobsite this morning. So twice now I've found od works after resetting computer, but after sitting overnight it doesn't. I might change the range sensor or computer after checking fuses. Any thoughts?
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
MirageMobile
Axles/Tires/Wheels
5
05-28-2016 08:54 AM
XJTony22
Modified XJ Cherokee Tech
21
05-13-2016 12:15 AM
31cherokee
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
6
05-03-2016 01:08 AM
bbrennan2011
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
5
04-28-2016 02:26 PM
nardey11
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
28
04-27-2016 03:37 PM

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 


Quick Reply: highway rpms



All times are GMT -5. The time now is 05:25 AM.