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Unread 06-30-2015, 11:48 PM   #1
joe98
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08 CRD towing 4k

Just tried pulling the new travel trailer this weekend, the jeep tows it pretty well, roughly 4000lbs without anything in it.
We didn't go too far maybe 50km away from where we live.
My question is, it seems like it wants to stay out of overdrive. We stayed off the high way, so I could get a feel for how he jeep handles the extra weight, which for all intents and purposes does so pretty well, but anyways, it never shifted into over drive when we did 80kph(50mph), so I brought the speed up temporarily to 100kph(62mph) and it still never shifted. Is it normal for this tranny to keep out of OD, even on flat straights?
If thats how it is, then thats how it is, but I'm just wondering if this is normal behavior for the W5J400

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Unread 07-01-2015, 01:23 AM   #2
SSF556
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Quote:
Originally Posted by joe98
Just tried pulling the new travel trailer this weekend, the jeep tows it pretty well, roughly 4000lbs without anything in it. We didn't go too far maybe 50km away from where we live. My question is, it seems like it wants to stay out of overdrive. We stayed off the high way, so I could get a feel for how he jeep handles the extra weight, which for all intents and purposes does so pretty well, but anyways, it never shifted into over drive when we did 80kph(50mph), so I brought the speed up temporarily to 100kph(62mph) and it still never shifted. Is it normal for this tranny to keep out of OD, even on flat straights? If thats how it is, then thats how it is, but I'm just wondering if this is normal behavior for the W5J400
How did you know it was not in 5th gear? Do you have an external gauge hooked up that tells you what gear you are in....not sure you can see that on the dash unless you use the manual mode.
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Unread 07-01-2015, 05:27 AM   #3
101gargoyles
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That CRD is good for 7200 pounds or more tow load. There may be a reason towing that trailer feels weird.
Trailer brakes? / 7 pin plug ? / Brake controller type ? / break-away brake switch key box ?
If you have these are they set up right?
You didn't say you have a problem without the trailer attached. My 08 CRD doesn't have a tow/haul switch or OD off system.
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Unread 07-01-2015, 06:19 AM   #4
JeepCACares
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Quote:
Originally Posted by joe98 View Post
Just tried pulling the new travel trailer this weekend, the jeep tows it pretty well, roughly 4000lbs without anything in it.
We didn't go too far maybe 50km away from where we live.
My question is, it seems like it wants to stay out of overdrive. We stayed off the high way, so I could get a feel for how he jeep handles the extra weight, which for all intents and purposes does so pretty well, but anyways, it never shifted into over drive when we did 80kph(50mph), so I brought the speed up temporarily to 100kph(62mph) and it still never shifted. Is it normal for this tranny to keep out of OD, even on flat straights?
If thats how it is, then thats how it is, but I'm just wondering if this is normal behavior for the W5J400
joe98,

As per the owner's manual, Tow/Haul mode is only available for 3.6L, 4.7L and 5.7L engines.
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Unread 07-01-2015, 07:38 AM   #5
joe98
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Quote:
Originally Posted by SSF556 View Post
How did you know it was not in 5th gear? Do you have an external gauge hooked up that tells you what gear you are in....not sure you can see that on the dash unless you use the manual mode.
I could tell by the RPM of the engine. It was about 2100 or so, normally CRD is around 1800 at 80kph.
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Unread 07-01-2015, 07:47 AM   #6
joe98
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Quote:
Originally Posted by 101gargoyles View Post
That CRD is good for 7200 pounds or more tow load. There may be a reason towing that trailer feels weird.
Trailer brakes? / 7 pin plug ? / Brake controller type ? / break-away brake switch key box ?
If you have these are they set up right?
You didn't say you have a problem without the trailer attached. My 08 CRD doesn't have a tow/haul switch or OD off system.
I wasnt really sure there was a problem? Just wanted experiences from folks to see if it was normal or not. I know shift points for trailering are always higher.
I honestly dont know if the trailer brakes are dragging a bit, I was going to check later on to see if they adjusted them on the tight side, or if my brake controller is sending power when it shouldn't but as far as I know everything is good, the controller is a Reese POD, it came with the Jeep and has an LED thats green with a trailer plugged in and turns red when it sends power to the brakes. My trailer is brand new, its a 2016 Rockwood MiniLite 2104s.
Guess Ill jack it up and find out if the brakes are dragging..
There are no problems without a trailer attached. The CRD does have an OD off, well if has the ability to select whatever max gear you want by using the + and - while the shifter is in drive, but it wont shift to the next gear if the load is too high. The engine didn't seem to have any trouble getting the RPM up.
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Unread 07-01-2015, 07:50 AM   #7
joe98
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Quote:
Originally Posted by JeepCACares View Post
joe98,

As per the owner's manual, Tow/Haul mode is only available for 3.6L, 4.7L and 5.7L engines.
I'm aware of this, the CRD's transmission doesnt need one and will adapt on the fly to trailering. This is why I'm wondering if it' normal for the transmission to want to not shift into OD. It wasn't gear hunting or anything.
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Unread 07-01-2015, 07:54 AM   #8
Hendrix9
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With the amount of sensors in the transmission it might be possible that it knew it was under a load so it kept it in 4th gear. I couldn't tell you for sure though. Once you got it up to 62mph I would think it should have shifted into 5th though. Did you keep it at that speed for a couple minutes?

As stupid as this sounds, you're sure you didn't bump it into 4th gear accidentally, did you? I did that for the first time the other day getting on the highway. I was like what in the hell is wrong with this thing, then realized it said "4" instead of "D" on the dash.
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Unread 07-01-2015, 07:59 AM   #9
bluejunior
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It's not uncommon for auto's under load to raise the speed of shift points a bit, and in fact it's healthy. It's similar to how it'll shift at higher speeds when on the gas hard than it will when you're accelerating slowly. Keeping it out of overdrive on hills and at at lower speeds that would normally go to overdrive will reduce the load on the engine, allow it's cooling system to function a little better and provide some other benefits. For example in my older XJ which lacks the sensors to do it itself, I keep it locked out of overdrive unless I'm going over 55 and anytime I'm dealing with a fair number of hills or accelerations. I wouldn't worry about it if I were you unless you're having rough shifts when it does choose to shift or some other sign of wear or trouble on the tranny.
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Unread 07-01-2015, 09:57 AM   #10
joe98
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Quote:
Originally Posted by Hendrix9 View Post
With the amount of sensors in the transmission it might be possible that it knew it was under a load so it kept it in 4th gear. I couldn't tell you for sure though. Once you got it up to 62mph I would think it should have shifted into 5th though. Did you keep it at that speed for a couple minutes?

As stupid as this sounds, you're sure you didn't bump it into 4th gear accidentally, did you? I did that for the first time the other day getting on the highway. I was like what in the hell is wrong with this thing, then realized it said "4" instead of "D" on the dash.
Pretty darn sure it was set to D the gf has in the past hit the shifter but I don't think it was the case.
I honestly just brought the speed up a bit to see if it would shift wasn't willing to go 20 over for too long.


Quote:
Originally Posted by bluejunior View Post
It's not uncommon for auto's under load to raise the speed of shift points a bit, and in fact it's healthy. It's similar to how it'll shift at higher speeds when on the gas hard than it will when you're accelerating slowly. Keeping it out of overdrive on hills and at at lower speeds that would normally go to overdrive will reduce the load on the engine, allow it's cooling system to function a little better and provide some other benefits. For example in my older XJ which lacks the sensors to do it itself, I keep it locked out of overdrive unless I'm going over 55 and anytime I'm dealing with a fair number of hills or accelerations. I wouldn't worry about it if I were you unless you're having rough shifts when it does choose to shift or some other sign of wear or trouble on the tranny.
No it all seemed pretty good. You're probably right. The shift point is probably a lot higher given of is usually not great to tow in OD.
I'm just used to my ram 2500 cummins that will shift into OD pulling. 8000 up a hill.
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Unread 07-01-2015, 03:11 PM   #11
Red_liner740
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Enclosed trailer? Lots of wind resistance? I find my CRD likes to stay in lower gear when towing but when i'm flat terrain its sometimes annoying as i know the lower rpm will handle the load fine. I will manually force it to 5th by pushing the shifter to the right when in D.
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Unread 07-01-2015, 07:03 PM   #12
TangoTango
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It's in OD at 75 mph. The shift point if I remember right was between 50 and 60 mph. I also tow with my ram and the ram gets better mileage towing that the Jeep crd.
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Unread 07-01-2015, 07:27 PM   #13
bluejunior
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Originally Posted by TangoTango View Post
It's in OD at 75 mph. The shift point if I remember right was between 50 and 60 mph. I also tow with my ram and the ram gets better mileage towing that the Jeep crd.
Then tow with your ram. It's actually built for it.
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Unread 07-02-2015, 10:04 AM   #14
TangoTango
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Then tow with your ram. It's actually built for it.
Really?
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Unread 07-02-2015, 10:08 AM   #15
bluejunior
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Originally Posted by TangoTango View Post
Really?
If it gets better mileage and behaves better why not? Believe me if a third vehicle for towing was practical I wouldn't do it with my jeep.

Wasn't meant to be sarcastic or anything, I just don't get why you're towing with the jeep if the Ram is both more capable and more efficient.
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