Dirtiest transmission fluid ever?
CF Veteran
Joined: Aug 2011
Posts: 10,489
Likes: 24
From: Nor-Cal Coast
Year: 90,84
Model: Cherokee
Engine: 4.0,2.5
Yes. Maybe a little less lately. Oh! the Jeep!, yea normally. The "seeking" is pretty rare. Like I said, "on the right slope, with the right wind". If I feel like I'm lugging on a grade I'll hit it, otherwise I'm after the MPG's.
::CF Moderator::
Joined: Aug 2011
Posts: 43,971
Likes: 1,578
From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
You're not gaining MPGs in Comfort mode.
After changing fluid and driving it some it doesn't seem to have helped the downshifting. I plan on draining and change fluid again in the next week or two. Doing research I read the shift solenoid can go out. How would I go about testing those? Could that be a possible probably?
CF Veteran
Joined: Jan 2012
Posts: 3,170
Likes: 312
From: Australia
Year: 1997 (RHD)
Model: Cherokee (XJ)
Engine: 4.0 ltr
If you want to take dirty ATF out of the equation, you know what to do.
Yes, faulty solenoids can cause shifting problems, but more things can cause this.
adjusting your TV cable (not television) is free and sometimes helps. Do a search on something called "free quick fix" or something similar, for the procedure to do this.
Yes, faulty solenoids can cause shifting problems, but more things can cause this.
adjusting your TV cable (not television) is free and sometimes helps. Do a search on something called "free quick fix" or something similar, for the procedure to do this.
::CF Moderator::
Joined: Aug 2011
Posts: 43,971
Likes: 1,578
From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
If you want to take dirty ATF out of the equation, you know what to do.
Yes, faulty solenoids can cause shifting problems, but more things can cause this.
adjusting your TV cable (not television) is free and sometimes helps. Do a search on something called "free quick fix" or something similar for the procedure.
Yes, faulty solenoids can cause shifting problems, but more things can cause this.
adjusting your TV cable (not television) is free and sometimes helps. Do a search on something called "free quick fix" or something similar for the procedure.
https://www.cherokeeforum.com/f2/free-quick-fix-41821/
::CF Moderator::
Joined: Aug 2011
Posts: 43,971
Likes: 1,578
From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
CF Veteran
Joined: Aug 2011
Posts: 10,489
Likes: 24
From: Nor-Cal Coast
Year: 90,84
Model: Cherokee
Engine: 4.0,2.5
::CF Moderator::
Joined: Aug 2011
Posts: 43,971
Likes: 1,578
From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Yes, you did. Larger throttle openings in order to maintain the same speed in lower gear result in lower manifold vacuum, yielding less than optimal performance and economy.
CF Veteran
Joined: Aug 2011
Posts: 10,489
Likes: 24
From: Nor-Cal Coast
Year: 90,84
Model: Cherokee
Engine: 4.0,2.5
Well you know how stubbart I am, guess this isn't the place to "duke it out". (and yes, it's spelled with two "B's, and a "t"). I dug in my heals and told my sister so!
I wonder if there is some way we could figure out if the OP has an adjustable TPS or not?
I wonder if there is some way we could figure out if the OP has an adjustable TPS or not?
Last edited by DFlintstone; Sep 15, 2014 at 09:55 PM.
CF Veteran




Joined: Jan 2014
Posts: 1,533
Likes: 349
From: District of Columbia
Year: 1998
Model: Cherokee (XJ)
Engine: 4.0
After changing fluid and driving it some it doesn't seem to have helped the downshifting. I plan on draining and change fluid again in the next week or two. Doing research I read the shift solenoid can go out. How would I go about testing those? Could that be a possible probably?
::CF Moderator::
Joined: Aug 2011
Posts: 43,971
Likes: 1,578
From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Try the Power mode. If you were gonna lose MPGs, would the factory later defaulted to the Power mode when they were chasing MPG standards? Uh, no.


