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Old 07-23-2012, 10:33 PM   #1
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2004 hunts for gear while climbing hills

Our Inspire with 350 Cummins, whether towing the toad or not, keeps searching for the proper gear when going up even what I regard to be even minor inclines. Of course if I manually shift down the problem stops, but its natural behavior does not seem right to me. My previous 2003 Winnebago with a 340 Cat and the same Allison tranny did not do this sort of thing. Does the transmission, which was recently serviced with the high $$$ fluid, have an issue? Or is this "normal". The coach weighs 30K per the TA scales.

We leave in a few weeks for 10-12 months of "full-timing" travel throughout the county and want to address possible issues before such a long trip.

Thanks for any thoughts.
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Old 07-23-2012, 10:46 PM   #2
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Try using the Economy mode. It is supposed to limit the gear shifting in rolling hills.

You have 350 hp for about 35,000 lbs with your toad so may get more shifting than the Winnebago.
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Old 07-24-2012, 10:51 AM   #3
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Are you using cruise control when this happens?
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Old 07-25-2012, 08:27 AM   #4
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Quote:
Originally Posted by dons2346 View Post
Are you using cruise control when this happens?
It happens when the coach is NOT using the cruise control.

Thanks for your interest.
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Old 07-25-2012, 08:30 AM   #5
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Quote:
Originally Posted by deandec View Post
Try using the Economy mode. It is supposed to limit the gear shifting in rolling hills.

You have 350 hp for about 35,000 lbs with your toad so may get more shifting than the Winnebago.
It does this even when not towing and the toad does not to seem to make the issue any worse. With our Itasca/winnebago, which admittedly was about $5K lbs lighter, we had no issues even while pulling the toad.

Thanks
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Old 07-27-2012, 11:07 PM   #6
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Does not sound normal to me. Ours does not do this. I do shift down manually when going up a really long steep hill.
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Old 09-06-2012, 08:40 AM   #7
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I thought that my Intrigue was doing the same thing as I was watching the tach and trying keep from over revving the engine. I went to Allison in Charlotte to get the bad news. They spent about two hours diagnosing the trans and doing a test drive. No fault codes had ever been set by the trans. The end result was that the tach was reading wrong. Trans was working perfect. They sent me happily on my way.
They did not charge me a single cent. I highly recommend them. Good luck with your solution.
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Old 09-06-2012, 08:53 PM   #8
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Thanks to all who have offered suggestions and feedback. I continue to have the "problem" but now quickly resolve it by applying a tad bit more throttle, which keep the tranny in the lower gear.
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Old 09-07-2012, 06:26 PM   #9
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We have an '04 Inspire with the same drive train that you have. Personally I think it takes a close blend of the throttle position and watching the tach to keep it from doing this. I just had the trans serviced at 59k and changing the filter/fluid made no difference. I've pushed the mode button and I don't feel any difference either.

Paying attention to road speed and rpm's is a delicate balance and when we climb hills it sure makes me pay attention to what is going on back there.

I don't think this helps you much but thought I would pass on my own observations.

Tom
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Old 09-07-2012, 07:50 PM   #10
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I drive a gasser. On cruise I have seen it shift down up to twice going up a hill.. More than that I take over driving. It does not "Hunt" though, shifts down on the way up and back up once we crest If it hunts, I kill the overdrive.
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Old 09-07-2012, 11:18 PM   #11
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Does anyone know if you can program the 3060 World Trans. to upshift to 6th gear before it hits 64 miles an hour? Mine wants to stay in fifth until then. In Oregon we can't hit it on a lot of the interstate and I am thinking my fuel mileage could be better if it would upshift and stay longer once it did shift. It wants to shift back to 5th too easily. I am sitting at the torque peak so it seems it would stay in 6th.
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Old 09-07-2012, 11:30 PM   #12
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Does anyone know if you can program the 3060 World Trans. to upshift to 6th gear before it hits 64 miles an hour? Mine wants to stay in fifth until then. In Oregon we can't hit it on a lot of the interstate and I am thinking my fuel mileage could be better if it would upshift and stay longer once it did shift. It wants to shift back to 5th too easily. I am sitting at the torque peak so it seems it would stay in 6th.
Put the trans in economy mode and it should allow the trans to upshift at a lower speed.
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Old 09-07-2012, 11:43 PM   #13
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I tried it and it doesn't change it at all. I was hoping that it was a program I could load from my laptop or at the Allison dealer.

Joe
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