Change shift points?

[JL Diesel]

I’ve noticed that my engine seems to shift late (2500rpm or higher) when going down hills if it’s from a dead stop and I’m accelerating through the first couple gears. I’ve had to manually shift a couple times because I wasn’t sure it would on its own. I spent the last 20 years driving a manual TJ so to relate this happens in situations where I would have skipped a gear (1st to 3rd) or even started in 2nd. On flat ground it shift at ~2000rpm or earlier and going up hills ~2500rpm which I would consider normal. Anyone else notice this? Is there anything I can do to adjust these downhill shift points? Thanks.

Sponsored

 

[JL Diesel]

BTW I live in a very hilly area

 

[Yzfguy]

I have two big hills I drive often and it holds the gear too long on them. I usually manually upshift so I don't feel like I am going to make it explode.

 

[nsfw_andy]

Yes, I've noticed it too. I just figured it was the computer trying to do engine braking by shifting later ?‍

 

[unsavory]

Yes, the 2.0 does the same thing, but I prefer it this way. As mentioned, it is programmed this way to help with engine braking and save your brakes on downhill runs.

2500 RPM will not make your engine explode. In fact the 3.6 doesn't even get into it's power band until about 2200 RPM or so.

 

[Gorilla57]

Yes, the 2.0 does the same thing, but I prefer it this way. As mentioned, it is programmed this way to help with engine braking and save your brakes on downhill runs.

2500 RPM will not make your engine explode. In fact the 3.6 doesn't even get into it's power band until about 2200 RPM or so.

You realize this is the diesel forum? 2500rpm in the diesel is over half its operating RPM......

 

[JL Diesel]

I have two big hills I drive often and it holds the gear too long on them. I usually manually upshift so I don't feel like I am going to make it explode.

Yes, I've noticed it too. I just figured it was the computer trying to do engine braking by shifting later ?‍

Im at least glad it’s not just my Jeep.

The engine braking makes sense which I do appreciate when I’m up to speed. I guess this is one of those times you can’t have your cake and eat it too. Having to pick I prefer the engine breaking. Especially with the added weight of the diesel. Thanks!

 

[Yzfguy]

Im at least glad it’s not just my Jeep.

The engine braking makes sense which I do appreciate when I’m up to speed. I guess this is one of those times you can’t have your cake and eat it too. Having to pick I prefer the engine breaking. Especially with the added weight of the diesel. Thanks!

I just want to let you know that I didn't realize we were referring to diesels. I have a 3.6 etorque, but it sounds like the same deal with the trans. And I agree... It engine breaks enough that it almost seems like a manual transmission.

 

[GtX]

I thought this would be too high a gear and too low an RPM. I often wish mine would hold 1 gear lower to keep the RPM higher.

 

[Ratbert]

Our diesels don't have throttle bodies and therefore don't have engine braking, right?

But yes, I periodically experience situations where it holds the current great too long.

 

[grimmjeeper]

Our diesels don't have throttle bodies and therefore don't have engine braking, right?

But yes, I periodically experience situations where it holds the current great too long.

The variable pitch turbo can act as an exhaust brake to a certain extent. Similar net effect.

 

[unsavory]

You realize this is the diesel forum? 2500rpm in the diesel is over half its operating RPM......

Nope! Sure didn't!

Sponsored