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Thomasbus24
Administrator
USA
4547 Posts |
 Posted - 03/01/2011 : 2:05:53 PM
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Quick question (maybe) on an MD3060 equipped International 4300 with 350,000 miles, 300,000 of which are mine...
Since November and getting more frequent I'll be cruising at 55 or 1750ish RPM, hit an imperfection in the road, and the lockup disengages for about 3 seconds (2100 RPM) then goes back in again. If I happen to be using cruise, it kicks off. Off off, pushing resume doesn't get it, gotta turn the master on again.
Yesterday the ABS light came on (hydraulic) but after shutting down, restarting and reaching 7 MPH it went out again. Made me wonder if it's related to the issue, but to be fair there is alot of flooding this week and I had been splashing a lot of water all day.
It seems to happen when/if the right rear wheels hit a hole or dip. Try to pull code from cluster "NO FAULT", Allison keypad lists no codes either. Not getting "check trans" or "Range inhibited" when this occurs.
Diff feels tight, rearmost u-joint is a little sloppy, but not what I'd deem bad yet.
Thoughts? |
Edited by - Thomasbus24 on 03/01/2011 2:07:59 PM
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Fastback
Top Member
1500 Posts |
Posted - 03/02/2011 : 05:47:43 AM
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| Maybe brake light circuit related? |
Why yes, the ORIGinal CHARGER is a Fastback |
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JustinB
Advanced Member
United States
490 Posts |
Posted - 03/02/2011 : 09:38:31 AM
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| If the ABS is throwing a code or thinks that the brakes are being applied, the transmission will drop out of lock-up. Allison is really funny about wanting to disengage the driveline to complete a stop. |
I may not know the answer but I can usually find who does. |
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Thomasbus24
Administrator
USA
4547 Posts |
Posted - 03/03/2011 : 01:54:59 AM
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I hadn't really entertained the brake light circuit idea because when the cruise kicks off, the master has to be turned back on, unlike when you hit the brake pedal and disengage it. In the muiltiplex world ANYTHING is possible though.
ABS light was on and off all day yesterday, and when it's on, that tranny won't act up.
Dealer says they have a truck doing the exact same thing right now. Going to be interesting. |
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IBTMech
Top Member
USA
973 Posts |
Posted - 03/03/2011 : 5:26:28 PM
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| Any ABS codes? I'd start by checking the connections to the ABS controller and the firewall connections. |
If it doesn't fit, FORCE it.
If it breaks, well, it needed replacing anyway.
Pullin' wrenches for 45 years. |
Edited by - IBTMech on 03/03/2011 5:27:36 PM |
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Thomasbus24
Administrator
USA
4547 Posts |
Posted - 03/04/2011 : 02:03:57 AM
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It's at the dealer now since the powers that be don't want me wasting my time tacking it down, but rather want to pay them $100/hr to do so. No, I don't make over $100/hr!!!!
How does a guy get the ABS flash codes on these? I've never needed to until now. I check the Allison with the arrow keys, the chassis/body codes with the wheel switches and get "No Fault" on the display, yet the ABS lamp is on, so I guess the cluster can't tell me why? |
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matts4290
Advanced Member
224 Posts |
Posted - 03/06/2011 : 09:24:30 AM
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| The torque converter clutch on my MD3060 does not unlock when I hit the brake or release on the throttle. It stays locked in until I slow down enough, probably for engine braking. -02 AA RE, cummins 5.9ISB |
We can't all be conventional!
http://www.youtube.com/user/matts4290 |
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MD3060 Lockup issue
