Community Forums

BellaBo · 04-21-2007, 06:42 AM

While travling on freeways at 55 the allison runs 5th fine. After exitng and travling secondary roads the transmission doesn't shift back to 5th until 55 again. If I stay under 55 it stays in 4th sucking gas at 2800 rpm. Anyone else have this happening?
Anyone know of a way to adjust these shifting points to occur at lower rpms?
Thanks,

BellaBo · 04-21-2007, 06:42 AM

While travling on freeways at 55 the allison runs 5th fine. After exitng and travling secondary roads the transmission doesn't shift back to 5th until 55 again. If I stay under 55 it stays in 4th sucking gas at 2800 rpm. Anyone else have this happening?
Anyone know of a way to adjust these shifting points to occur at lower rpms?
Thanks,

rvten · 04-21-2007, 06:59 AM

This is normal. You have to do 55 to get into 5th gear.. I will run with 5th gear locked out on hilly roads and some back roads.

rgrstndgby · 04-21-2007, 07:19 AM

Streamerman.. That is the way this unit is programed. Workhorse/Allison say that they have it "all figured out" and all things considered, load on the engine/trans, cooling, milage, and probably high on their list, emissions, that pattern is best. I too subconciously try to "urge" my coach into a higher gear sometimes, but without a "major" reprograming, it isnt going to happen....rgr...

Trek-Cyclist · 04-21-2007, 09:11 AM

On secondary roads I bring the coach up to 56 mph speed limit being close, let it shift to 5th gear and back off.... If your not pulling hills or putting the pedal to the metal it will hold sometimes at 45 before shifting out of 5th to 4th. At 50 mph takes a little bit more to shift out of 5th!This is without the cruise control on......

DriVer · 04-21-2007, 09:59 AM

<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by Ed/Full-time:
This is without the cruise control on...... </div></BLOCKQUOTE>I can do the same thing with the cruise "ON". What you do is set the cruise to "On", when accelerating push the set at about 45 to 47 MPH and continue accelerating. The "Green" cruise light should come on. Continue to accelerate until the tranny shifts up at 55. Begin cruising in 5th and it'll back off to the preset speed and cruise at 47~49 something if the road is nice and flat.

Southbound Jersey Turnpike @ the 55 mile marker 65 MPH indicated - 2299 RPM. ~ H.S.N.

Weather report follows:

78 degrees

Bob (WA0MQE) · 04-21-2007, 12:44 PM

What "Green" cruise light, Driver? I don't have a "Green" cruise light.

rgrstndgby · 04-21-2007, 01:29 PM

<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">I can do the same thing with the cruise "ON". What you do is set the cruise to "On", when accelerating push the set at about 45 to 47 MPH and continue accelerating. The "Green" cruise light should come on. Continue to accelerate until the tranny shifts up at 55. Begin cruising in 5th and it'll back off to the preset speed and cruise at 47~49 something if the road is nice and flat. </div></BLOCKQUOTE>

Ed/Driver, are either of you guys equiped to get a vacuum reading when you do that?..If you are, please compare it with the 55 mph x 5th gear reading for me... I just added that ability, and will be curious to see what kind of "-inches" that routine produces..Thanks...rgr...

BellaBo · 04-21-2007, 03:05 PM

Thanks to all for the input. I thought this might be the way allison planned it, but seems to hold 4th too long.
I'll try the cruise control method enroute to Myrtle Beach tommorro.

Trek-Cyclist · 04-22-2007, 06:41 AM

rgrstndgby,
No I don't have that option...
Driver,
I don't use the cruise because I can feather the pedal better then the machine... After you lock in the cruise and your speed decreases one (1) mph your 5th gear is gone....

DriVer · 04-22-2007, 10:02 AM

<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by Ed/Full-time:
rgrstndgby,
... After you lock in the cruise and your speed decreases one (1) mph your 5th gear is gone.... </div></BLOCKQUOTE>Not so fast, I can scrub off a bunch of MPHs and still not downshift to 4th. I have a trick up my sleeve.

edgray · 04-22-2007, 11:06 AM

<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">I don't have a "Green" cruise light. </div></BLOCKQUOTE>
If you look closely, in the upper left side (NW of the "3" in your tach) of the IP cluster, the word "cruise" (in green) is illuminated when the CC is engaged. Some later model clusters use a symbol that resembles a speedometer in lieu of the word. ED

abarkl · 04-22-2007, 07:22 PM

I don't have a cruise indicator light on my 2001 and all my controls are on the stick.

DriVer · 04-23-2007, 05:01 AM

<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by abarkl:
I don't have a cruise indicator light on my 2001 and all my controls are on the stick. </div></BLOCKQUOTE>Your analog instrument panel is different than the IP which includes the digital command center.