my new to me 2.5 TJ has a stutter to it. I’ve changed all fluids, plugs, wires , cap and rotor, filters etc. it never stalls but it has a distinct stutter upon acceleration like it’s not the smoothest thing in the world. Is this normal or should it be pretty smooth? There is an aftermarket cat on it and it does have headers, those may be factory tho for all I know. Any suggestions on where to look or common stutter causes?? Cleaned the iac valve as well but that would only affect idle correct??
97 TJ 2.5L stutter
- Thread starter Grant Reagin Sr
- Start date
I have a 2.5, had the stutter hesitation problem. My 2.5 now has 166k.
I tried several things, as you have, and nothing worked.
I solved my problem finally by installing the NTK #23506 upstream O2 sensor. And my gas mileage increased a bit as well.
Smooth acceleration and no stuttering ever since.
I tried several things, as you have, and nothing worked.
I solved my problem finally by installing the NTK #23506 upstream O2 sensor. And my gas mileage increased a bit as well.
Smooth acceleration and no stuttering ever since.
KenR955
Member
I'm curious if either of you find that your 2.5 hates to be lugged below 2000rpm. Accelerating from a stop and revving over 3200, mine runs like a top and pulls good through the gears. Put it in 3rd or higher at say, 1500rpm and get into the throttle, she's pretty rough. It's almost like these things need a heavier or dual-mass flywheel.
I also get a gear growl that magically disappears at precisely 2300rpm, especially noticeable in 3-4-5 gears. Had it before and after the new (not rebuilt) Mopar AX5 I put in. I'm starting to think it might be the clutch disc springs.
Just comparing notes as to what's "normal" for these 4-bangers.
I also get a gear growl that magically disappears at precisely 2300rpm, especially noticeable in 3-4-5 gears. Had it before and after the new (not rebuilt) Mopar AX5 I put in. I'm starting to think it might be the clutch disc springs.
Just comparing notes as to what's "normal" for these 4-bangers.
i have a 4.11 rear end and have not noticed any growling. it seems to run smooth as silk now. it definitely doesn't like to be lugged but i would think that normal for a low powered 4 cyl?
i did find that recall as well and will take it in next week for that, and i found a fuel system recall as well open on it
i did find that recall as well and will take it in next week for that, and i found a fuel system recall as well open on it
Stock 4.11:1
The noise could be resonating from the driveshaft. I do have a new spline yoke for the xfer case O/P. Might toss that on since I have it.
Yes, when I lug it low in 3rd and 4th it does make a growling sound. I have a remanufactured AX5, 4.56 gears.
side question, Where or how do I check to see what recalls might be out there for my 97?
side question, Where or how do I check to see what recalls might be out there for my 97?
Drop by any jeep dealer and give them your VIN. They printed me a copy on the spot.