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Have 1965 American La France firetruck. Engine is a Detroit 8-V 71 and has I believe an Allison transmission. Truck was not used for awhile. I recently got it running, drove it one block, but all 0f a sudden lost forwardmotion. Checked tranny fluid, linkages and all seem okay. When I put in gear front shaft starts to turn, but goes through PTO for pump, which I believe is the problem. What oi I do to get the tranny to engage all the way.

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

Big Poppa Ma
  • 302 Answers

SOURCE: Speedometer runs erratic and transmissions drops to second gear.

The ECM or TCM may be the culprit, its also possible that a ground wire is no longer grounded or partially grounded giving you the erratic speedometer.

Posted on Dec 08, 2008

  • 25 Answers

SOURCE: Cannot engage transmission from first to second gear

Hi,
maybe has a broken linkage or the bolt came lose.
Check if you can engage hall the gears pushing the linkage by hand,engine ranning and same one pressing the clutch!that way you can have same idea wath is wrong?!

Posted on Dec 27, 2008

  • 2 Answers

SOURCE: Ford 2003 Windstar transmission problem

Windstar tranny problem: just got off phone with Northway Transmission of Queensbury, NY Technician said the torque converter had destroyed itself. the pump drive spline in converter broke and took out fins in torque converter it's going to cost me nearly $1600.00 car has only 45000mi on it and I caught it rather quickly and DID NOT TOW had car moved by flatbed/ramp truck otherwise they would have had to completly tear down transmission. (over $2300.00)

Posted on Jan 08, 2009

  • 1 Answer

SOURCE: Hello, 1986 Toyota 4X4 Truck

I've seen a similar issue on other transmissions where the shifter slips out of the slots in the shift forks, either due to shifter bushing wear or just general wear on tte trans. It can usually be remedied at least temporarily by popping the shifter top off the trans and resetting the forks all back to nuetral and then reinserting the shifter. It gets jammed when two forks are trying to engage two different gear sets.
On one of the 4x4 sites, they tell you how to replace the shifter bushings, cheap fix if you are lucky.
Good luck.

Posted on Feb 24, 2009

saabreur
  • 51 Answers

SOURCE: Cannot engage transmission from first to second gear

Usually this is a linkage problem, and most often the rubber lined coupling between two rods in the linkage system. This fails as the rubber ages, and when it does you are unable to select some or all gears, and might be stuck in one gear!

Not too difficult to re and re, and part is available from Saab dealer at reasonable cost.

Coupling may be located inside the car, under the console, ahead of the gear lever housing, or on the other side of the firewall

Posted on May 30, 2009

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