Jump to content



transmission gear for speedometer? not working since I updated to 89 trans


  • Please log in to reply
6 replies to this topic

#1 kaaos

kaaos

    Member

  • Members
  • PipPipPip
  • 86 posts
  • Location:Minnesota

Posted 01 August 2019 - 07:12 PM

So long story short I swapped to a 89 transmission low mileage in my 87 quest. It looked in very good shape got it from iowa for like $150 or maybe $100 it was a while ago.
Ever since my speedometer has not worked, I swapped the sender on the transmission like a few weeks ago and no change. I just put a drill on the cable  and the speedometer in the car works fine. IS there a gear in the transmission that I have to change? does anyone know what part #? or do you think my original speed sender is bad? is there 12v? going to the speedometer? I mean i reconnected everything but it has not worked since i changed transmissions.
Maf-t Gen 2 gm 3" maf
Rebuilt motor Wiseco 8.0 compression forged pistons
Race prepped rods
Arp rod and headgasket studs.
Headworks valve Job factory polished valves Polished chambers
1989 ECU, BSEK, Ajusa HG, Extensively ported and polished head (Alabama NJV)/intake/exhaust manifolds, Aeromotive fpr, Hallman MBC, all new brakes and bearings, *DM 2.5" exhaust with a Hooker Aerochamber.
stock 12a, hope to change soon to a small 16g.
240mm Fidanza aluminum 10.5 pd flywheel xtd 225mm clutch
1989 Transmission with 36k





#2 markhansenconquest

markhansenconquest

    Established Member

  • Members
  • PipPipPip
  • 3,491 posts
  • Gender:Male
  • Location:temecula,ca
  • Model:Conquest

Posted 01 August 2019 - 11:01 PM

are u sure U hooked it back in right ??  if speedo works with drill problem must be at trans ............

#3 ucw458

ucw458

    This will mean the extinction of all life forms on this planet.

  • Moderators
  • PipPipPipPipPip
  • 11,611 posts
  • Gender:Male
  • Location:Colorado
  • Model:Conquest

Posted 02 August 2019 - 01:40 AM

Speedometer gearing inside the trans is machined onto the output shaft so there is nothing to break inside the trans.  Either you installed the removeable speedometer section wrong or it's broken.
My 87
Posted Image

#4 kaaos

kaaos

    Member

  • Members
  • PipPipPip
  • 86 posts
  • Location:Minnesota

Posted 02 August 2019 - 05:49 PM

I'm sure i hooked it up correctly.  It is strange the sender i just swapped to from my 87 transmission is still not working and it was working previously when i had the 87 transmission. The  89 sender was not working. I could not get it out in no way possible, I tried clearancing the aluminum with a die grinder to fit the wrench in there. But no luck, so i had to sawzall the 89 sender in half to remove the bolt.
Maf-t Gen 2 gm 3" maf
Rebuilt motor Wiseco 8.0 compression forged pistons
Race prepped rods
Arp rod and headgasket studs.
Headworks valve Job factory polished valves Polished chambers
1989 ECU, BSEK, Ajusa HG, Extensively ported and polished head (Alabama NJV)/intake/exhaust manifolds, Aeromotive fpr, Hallman MBC, all new brakes and bearings, *DM 2.5" exhaust with a Hooker Aerochamber.
stock 12a, hope to change soon to a small 16g.
240mm Fidanza aluminum 10.5 pd flywheel xtd 225mm clutch
1989 Transmission with 36k

#5 kev

kev

    Moderator

  • Moderators
  • PipPipPipPip
  • 5,009 posts
  • Gender:Male
  • Location:PA
  • Model:Other

Posted 06 August 2019 - 06:06 AM

The speedo gear housing itself is a cam.  You have it installed either 90 or 180 out.  Remove the clip securing it in place and rotate the housing until you feel the gear mate with the output shaft.  Line up the notches and reinstall the clip.  

Or to make it simpler, look up my tranny rebuild thread in the faq section. There is a photo showing the correct orientation

Kev

#6 kev

kev

    Moderator

  • Moderators
  • PipPipPipPip
  • 5,009 posts
  • Gender:Male
  • Location:PA
  • Model:Other

Posted 06 August 2019 - 06:57 AM

Copied over from the FAQ thread:



So the speedo gear housing is actually a cam..you need to rotate it to engage the splines.  You’ll feel it couple.  Or just orient it with the notch on the outside in the position I show

Posted Image

Posted Image

Line up your slots and install the retainer.  

Posted Image

Posted Image

Posted Image

#7 kaaos

kaaos

    Member

  • Members
  • PipPipPip
  • 86 posts
  • Location:Minnesota

Posted 03 September 2019 - 10:55 AM

thanks so i rotated it and its working again.
Maf-t Gen 2 gm 3" maf
Rebuilt motor Wiseco 8.0 compression forged pistons
Race prepped rods
Arp rod and headgasket studs.
Headworks valve Job factory polished valves Polished chambers
1989 ECU, BSEK, Ajusa HG, Extensively ported and polished head (Alabama NJV)/intake/exhaust manifolds, Aeromotive fpr, Hallman MBC, all new brakes and bearings, *DM 2.5" exhaust with a Hooker Aerochamber.
stock 12a, hope to change soon to a small 16g.
240mm Fidanza aluminum 10.5 pd flywheel xtd 225mm clutch
1989 Transmission with 36k




0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users