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MOPARornoCAR
Dodge Dakota
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11/18/2002
22:59:17
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 Subject: gear choosing
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Message:
2001 5.9 quad 4wd
my tranny will not use the gear right above overdrive
whenever i am cruising @50 mph's and reach a hill in need of some added gas pedal.....my tranny goes down 2 gears instead of just one which seems sufficient for the need....then it seems to downshift back intoo a gear too high and sometimes right back down......all of this while still climbing the hill
it seems too be searching way too easily...for a 5.9
its got 27000 miles and i have had the dealer do one tranny service on it with +4 fluid
anyone?????help????
B>
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Dan Gruber
GenIII
11/19/2002
05:00:13
|  RE: gear choosing
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Did it just start doing this? If so, then there might be a problem. If it's been doing this all along, read on...
I hope I'm not going to insult your intelligence, but are you sure it is downshifting 2 gears? I'm asking because a shift from 4th gear (OD) with the converter locked to 3rd gear (D) with the converter unlocked can feel like a two gear drop. If you're not sure, take the truck out and get it to do the shift you describe...then immediately stand on the gas pedal. If you get another downshift, your truck has just been hunting between 3rd and 4th, locking an unlocking the converter to maximize gas mileage. Annoying, but probably normal. If it bugs you, lock out the OD until you start cruising at a higher speed. But if your truck is truly doing a 4-2 downshift at 50 under relatively light to moderate throttle, or what you describe is not how it has always shifted, your dealer needs to take a look at it.
Dan
2000 CC SLT 4.7 4X4 Auto 3.92 LSD
3 inch Performance Accesories lift & 32 inch BFG MT KM's
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MOPARornoCAR
Dodge Dakota
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11/19/2002
14:36:44
|  RE: gear choosing
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Message:
HEY THANKS
i will try this.....
but.....one ?
what rpm difference is there between 4th and third gear????
B>
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POWER HUNGRY
Dodge Dakota
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11/19/2002
20:59:52
| RE: gear choosing
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MOPARornoCAR,
The rpm's drop by about a third, 1:1 3rd gear and .69:1 for 4th. Thats about a 750rpm drop at 50 and a 875rpm drop at 60mph.
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Dan Gruber
GenIII
11/20/2002
03:52:57
| RE: gear choosing
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I'll buy what PowerHungry said. I can't check for sure because my truck is several thousand miles away right now, and your 5.9 and 46RE setup is a little different than mine anyway. I'd be close, but not exact.
Dan
2000 CC SLT 4.7 4X4 Auto 3.92 LSD
3 inch Performance Accesories lift & 32 inch BFG MT KM's
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Manny
Dodge Dakota
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11/20/2002
09:09:40
|  RE: gear choosing
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Ahh yes, the trials and tribulations of the infamous automatic tranny. I know, I know, you would have gotten the manual, but they don't offer it in the 5.9. And aahhh yes, the 5.9, much larger c.i., a scant increase in HP, slightly more torque, and overall a slower truck than the 4.7 SOHC.
Ahhh yes, the trials and tribulations,
Manny, Tranny that is
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HSKR
Dodge Dakota
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11/20/2002
10:17:48
| RE: gear choosing
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Ahh yes Manny, you hit the nail on the head. The 5.9 with all its aftermarket parts that are available and easier to do than the 4.7 makes it such a bad choice. The increased torque for towing is a bad thing too. And what was Dodge thinking putting a consistent auto tranny behind the 5.9?? If people would just learn how the 46RE auto works, it is a very good tranny. I never had any troubles with mine in 116K miles of driving(before I wrecked it) Of course the heads and cam that I did along with intake manifold, and PCM really pepped up my truck. What's that?? No custom cams for your 4.7?? Huh?? Only one option for heads?? I'm sorry for you. Oh and the only intake manifold option is the HO intake manifold which has yet to show any significant performance gains.
Now, back to the original topic, the RPM difference between 3-4 is 1000rpm at 60mph. Set the cruise at 60mph and with the 3.92 rear gears, the RPMs will be 2000RPM, turn the OD off and the RPMs will jump to 3000. It just sounds to me like the tranny is searching for a gear. Turn the OD off when it downshifts to keep it in 3rd and it will pull smoothly up the hill.
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MOPARornoCAR
Dodge Dakota
JOIN HERE
11/20/2002
23:16:34
| RE: gear choosing
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Message:
UPDATE*****
TODAY ON THE way too work i tested what has been spoke of......then on a long stretch of highway i got it too do it ,,what seems too be two gear downshift....then i did the same thing but with hitting o/d off button....walllla it did the same dam thing!!!!!so thanks too all of u...now i am not concerned....it just feels weird ...like two gears downshifted....but its actually just a feeling.
shhhhhhhhheeeewwwwwww
thanks!!!!!
and i love how the 5.9 passes on the highway without even shifting gears...unlike the 4.7
B>
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MOPARornoCAR
Dodge Dakota
JOIN HERE
11/20/2002
23:17:31
| RE: gear choosing
IP: Logged
Message:
UPDATE*****
TODAY ON THE way too work i tested what has been spoke of......then on a long stretch of highway i got it too do it ,,what seems too be two gear downshift....then i did the same thing but with hitting o/d off button....walllla it did the same dam thing!!!!!so thanks too all of u...now i am not concerned....it just feels weird ...like two gears downshifted....but its actually just a feeling.
shhhhhhhhheeeewwwwwww
thanks!!!!!
and i love how the 5.9 passes on the highway without even shifting gears...unlike the 4.7
B>
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