@Chris said nothing about the 42RLE can be changed with the HPTuner at https://wranglertjforum.com/threads/changing-the-42rle-shift-points.19533/#post-316856
Maybe HP updated that because it has shift tables and they change the shift points.
@Chris said nothing about the 42RLE can be changed with the HPTuner at https://wranglertjforum.com/threads/changing-the-42rle-shift-points.19533/#post-316856
Maybe HP is talking about automatic transmissions in general.Maybe HP updated that because it has shift tables and they change the shift points.
@Chris said nothing about the 42RLE can be changed with the HPTuner at https://wranglertjforum.com/threads/changing-the-42rle-shift-points.19533/#post-316856
Maybe HP is talking about automatic transmissions in general.
You can’t change the shift points of the 42RLE with HPTuners. That’s what Ryan at FRP told me.
Maybe something changed?
@Chris said nothing about the 42RLE can be changed with the HPTuner at https://wranglertjforum.com/threads/changing-the-42rle-shift-points.19533/#post-316856
Good information, I see that information has been updated. Thanks!Chris was incorrect. You can change some things about it. We had a discussion couple years ago. See the link in my first post. You even posted in this thread
https://wranglertjforum.com/threads/hptuners-mpvi2—it-looks-like-it-is-possible-to-program-42rle-shift-points.42931/
I have been using the HP tuner on 2005/2006 wranglers since HP came out with the Jeep tune, as Jezza and psrivats noted the shift points can be adjusted, just understand the speed shown in the table are based on output shaft speed not engine rpm.
I figured that out after the second flash. Even though HP has it labeled as Engine RPM.
What do you mean by a taller gear? A higher ratio like 4.10 or a lower ratio like 4.88?
I wouldn't expect mileage to change much on either side with an axle re-gear. Only improvement to expect is in the driveability.
When was the last time you checked your O2 sensors?
fwiw, I get about 13 with 35s, 4.88 and an AX15. 12 seems pretty awful for 31s.
How many miles have you put on it since the regear? I have to wonder if the gears were set up way too tight, but if that's the case I would expect them to eat themselves and be noisy in short order. When my first set of gears ate themselves in 2000 miles, the guy that set the new ones swore I would feel a difference in acceleration because of how poorly the first set had been done. I did, but it was hard to say it was a better setup or the fact that I also went from 4.56 to 4.88.
My 42RLE never "hunted" between 3rd and 4th, it was damned hard to even get it out of 4th (Overdrive) once it was in it. You had to stomp on the gas hard to get it out of 4th or turn the OD off.
Mine was the same way until I tuned it with HP. I used to push the OD switch to get it to kick down. After the tune it drives much better.
Something is wrong somewhere. I was getting 16.5 MPG with 33's and 5:13 gears, and now same gears and 37's is still getting 14mpg. Granted I live in a relatively flat area but 12 MPG on 31's is ridiculous. My Armada on 32's gets 14 MPG and it's a V8 full size 3 row SUV.
I agree with above, check and see if your brakes are dragging, or if you've got drive line bind somewhere.
Yeah, that was kind of my thought as well. I may bug the shop again, though this is sort of a hard thing to just be like "It is not right.". I'll give the brakes a look. I assume just grabbing the driveshaft and giving it a twist to see if it has the small amount of play it should is enough for a driveline "bind" check?
Update: I jacked up the Jeep, and spun all the tires. The back tires spin easy and keep going like a merry go round after you stop pushing them. The front ones do not though. It is more work to get them spinning, and they almost stop right away. I don't think the brakes are dragging, but I guess they wouldn't make noise necessarily. I tried them both in 2h, and 4h. What are some things to look for up front that might be giving that extra resistance? I'll also try a long drive and feeling the brakes, and if they are warm/hot.
Update: I jacked up the Jeep, and spun all the tires. The back tires spin easy and keep going like a merry go round after you stop pushing them.