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Re: Allison HT740 shift problem by mike miraglia
Post New Message We have an oshkosh mixer truck 2001

with a cat c-10 motor, we recently installed another engine (used) and now the tranny won't shift out of first unless it is driven about 5-6 mph. then it will shift thru the gears ok.

the engine is rated at the same rpm as the old one. we have tried changing the trans fluid and filter and also the governor screen. installed dexron 3
fluid as recomended.

the engine runs great.

checked all wiring connections to the ecm, speed sensor and cleaned.

could there be a need to change any programming in the new motors ecm?
All Messages in ThreadAuthorDate
Post New MessageAllison HT740 shift problem kurt 7-11-05  
  Reply to MessageRe: Allison HT740 shift problem luis 2-11-08  
  Reply to MessageRe: Allison HT740 shift problem Randy 7-20-05  
  Reply to MessageRe: Allison HT740 shift problem Geoff Warren 2-1-13  
  Reply to MessageRe: Allison HT740 shift problem mike miraglia 9-20-08  
  Reply to MessageRe: Allison HT740 shift problem Yugani 6-17-09  
  Reply to MessageRe: Allison HT740 shift problem Asst Chief Michael Papke 8-24-11  
  Reply to MessageRe: Allison HT740 shift problem SGT. Covellone, M. 3-4-10  
    Reply to MessageRe: Allison HT740 shift problem SSG Rafael Garza IV 3-14-10  
      Reply to MessageRe: Allison HT740 shift problem larry price 4-30-14  
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