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 88 5 speed mighty max 3rd and 4th gear not working
#1047674
06/04/12 07:11 AM
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Joined: Mar 2012
Posts: 25
OP
Getting the Wheeling Fever
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today i was driving and shifted into 3rd and 4th gear and it was as if i was putting it into nuetral. i still have 1st 2nd and reverse. i have tried to put into 4wd and go into 3rd and 4th but still will not work. any ideas of what could of happen. the tranny is not griding and all other gears shift smooth
89 Raider V6 5 speed factory lsd rear
88 mighty max 4 cyl. 5 speed
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Re: 88 5 speed mighty max 3rd and 4th gear not working
[Re: dsmguy]
#1047675
06/04/12 01:37 PM
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Joined: Dec 2006
Posts: 163
Wheeler
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Re: 88 5 speed mighty max 3rd and 4th gear not working
[Re: cheesegrater]
#1047676
06/04/12 04:01 PM
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Joined: Jan 2002
Posts: 6,134
Trail Leader
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Usually you loose all but 3rd, we've never had any luck with those KM145's. My suggestion as always is remove the Chrysler trans and swap in the Aisin auto <img src="/forums/images/graemlins/kewl.gif" alt="" />
1999 Montero SAS'd on Kings and stuff
1998 Montero trying to get a V8 Swapped
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Re: 88 5 speed mighty max 3rd and 4th gear not working
[Re: TOASTY]
#1047677
06/04/12 04:30 PM
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Joined: Apr 2012
Posts: 22
Need a Spot
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if you decide not to fix the truck I would be willing to buy the two front skid plates from you if you want to sell them <img src="/forums/images/graemlins/patriot.gif" alt="" />
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Re: 88 5 speed mighty max 3rd and 4th gear not working
[Re: harleydude446]
#1047678
06/04/12 05:59 PM
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Joined: Jan 2001
Posts: 13,649
Web Wheeler
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When mine failed, I lost all but 4th. I'd pull the shifter and see what moving the shift rails by hand does. May have lost the 3-4 shift fork connection to the rail. This would mean that you can not lock 3rd or 4th to the shaft to engage those gears. Since 1 and 2 engage, I don't think you have the classic bad input shaft the km145 is known for, but it's possible...
Not responsible for advice not taken...
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Re: 88 5 speed mighty max 3rd and 4th gear not working
[Re: fasteddy]
#1047679
06/04/12 10:11 PM
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Joined: Mar 2012
Posts: 25
OP
Getting the Wheeling Fever
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I pulled of the shifter and shifted the rails by hand and put it into 3-4 gear.i can see all the shift rods moving and working. i am guessing it is the shift fork that possibly broke or maybe a roll pin. is there any info on how to rebuild this transmission or is there a stronger tranny out there? will the v6 montero tranny fit into the 4cyl mighty max?
89 Raider V6 5 speed factory lsd rear
88 mighty max 4 cyl. 5 speed
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Re: 88 5 speed mighty max 3rd and 4th gear not working
[Re: harleydude446]
#1047680
06/04/12 10:12 PM
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Joined: Mar 2012
Posts: 25
OP
Getting the Wheeling Fever
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if you decide not to fix the truck I would be willing to buy the two front skid plates from you if you want to sell them <img src="/forums/images/graemlins/patriot.gif" alt="" /> sorry my truck did not come with them. i am looking for a set also.
89 Raider V6 5 speed factory lsd rear
88 mighty max 4 cyl. 5 speed
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Re: 88 5 speed mighty max 3rd and 4th gear not working
[Re: dsmguy]
#1047681
06/04/12 10:23 PM
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Joined: Jan 2001
Posts: 13,649
Web Wheeler
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v6 5psd will not fit. You're stuck with the km145.
I think it's:
shift fork spring pin came out or broke
3-4 syncro failed
Try pulling the tranny bottom pan and see if there are any bits in there. Drain tranny juice over a magnet to look for fines. Move the shifter and see if the 3-4 shift fork moves.
Last edited by fasteddy; 06/04/12 11:17 PM.
Not responsible for advice not taken...
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Re: 88 5 speed mighty max 3rd and 4th gear not working
[Re: fasteddy]
#1047682
06/04/12 10:33 PM
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Joined: Mar 2012
Posts: 25
OP
Getting the Wheeling Fever
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thanks. i will drop pan today. i hope its just a bolt and not synchros. i could not find info in the archives on how to rebuild or tear down the tranny. any advice on were to look?
89 Raider V6 5 speed factory lsd rear
88 mighty max 4 cyl. 5 speed
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Re: 88 5 speed mighty max 3rd and 4th gear not working
[Re: dsmguy]
#1047683
06/04/12 11:21 PM
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Joined: Jan 2001
Posts: 13,649
Web Wheeler
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89 montero fsm on mitsubishilinks.com (iirc).
The spring pin is accessible from the bottom pan, and can be repaired in the truck. If it's the syncro pair, you have to tear down the tranny. It's not real hard, but you may need some special tools. I managed with normal hand tools to rebuild a similar tranny (mazda R in a Navaho).
Not responsible for advice not taken...
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