Allison transmission

#1
Allisonman
I have a 1992 Gulf Sttream Friendship LXE with a 250 cummins and an Allison MD 3060 transmission. My Problem is that no matter how hot or cold the transmission is when I turn the ignition key on the speedometer will jump from 0 to 50 mph and when it settles down the hot transmission light will come on and I am not able to get the transmission to shift into gear. At first I was able to get it into gear after turning the key on two or three times now every time i turn the key it does the same thing. If I am successful as I am driving along the transmission will show the hot tranny light and shift into 3rd or4th grar. Is there a simple problem here?
 

Kirk

Senior Member
#2
Allison transmission

I'm not Allison expert, but the symptom sounds like a sensor problem to an old retired electronic tech.
 

Kirk

Senior Member
#3
Allison transmission

I'm not Allison expert, but the symptom sounds like a sensor problem to an old retired electronic tech.
 

Kirk

Senior Member
#4
Allison transmission

I'm not Allison expert, but the symptom sounds like a sensor problem to an old retired electronic tech.
 

Kirk

Senior Member
#5
Allison transmission

Sorry about the tripple post! I was getting an error message from the website and thought that it had not posted.
 
#6
Allison transmission

The two problems may not related. The speedo could be OK as they will do that on some vechiles. The trany could be a sensor like Kirk said.
 
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