Speedomater Help
Thread Starter
Junior Member
Joined: Jul 2008
Posts: 49
Likes: 0
Year: 1984
Model: Cherokee
Engine: 2.5L
Hello, Everyone, I have a 1984 Cherokee, And the speedometer dosent work. Could someone tell me what i need to do to fix it? do i Need to get a new cable, or a new speedometer, or if it is something in the transfercase? if anyone can help me that would be great. Thanks
CF Veteran
Joined: Apr 2008
Posts: 2,237
Likes: 3
From: Northern Illinois
Year: 90
Model: Cherokee
Engine: 4.0
Okay... an 84 is completely cable driven. What generally happens here is either A. the gear in the back of the speedometer housing cracks and stops working, or B. The gear in the transfer case cracks and stops working.
Generally the cable doesn't fail.. But you can drive it with a drill if you want to check.
Does it still make a clicking noise in the dash?
Generally the cable doesn't fail.. But you can drive it with a drill if you want to check.
Does it still make a clicking noise in the dash?
Renix Super Guru
Joined: Mar 2008
Posts: 24,653
Likes: 19
From: In yourz postez fissin jurr spelinzs
Year: 1990XJ/1989MJ
Model: Comanche
Engine: 4.0L Renix
Whowey was refering to making a clicking while using a drill to attempt to turn the speedo. Can you check the speedo gear where it goes into the tranny? See if that end will turn and what it does at the speedo end (may need two people here) if the speedo is moving then it is the tranny end if not then the dash pod may need to be replaced. They can be repaired but that would require a shop to do so.(expensive) A JY speedo would be cheaper and quicker.
Thread Starter
Junior Member
Joined: Jul 2008
Posts: 49
Likes: 0
Year: 1984
Model: Cherokee
Engine: 2.5L
Ok, i just checked the to see if the the guage works when i turn the cable with drill, and it dose. dose this mean it needs a new paart in the t-case? or what? thanks
Renix Super Guru
Joined: Mar 2008
Posts: 24,653
Likes: 19
From: In yourz postez fissin jurr spelinzs
Year: 1990XJ/1989MJ
Model: Comanche
Engine: 4.0L Renix
Yes the speedo gear is held in by a 10mm bolt IIRC and you should mark the location of that part before removal as it is an adjustment. You can then see if it is the speedo gear or the drive for that gear. Both are nylon so either can be bad or stripped. The gear on the end of the cable is easy to replace but the drive gear in the tc is a little more complicated. Cross your fingers and hope it is the speedo cable gear. They are a dealer item but cheap ($10) Let us know what you find. Don't forget to mark the position of that part before removing it from the tc.
Trending Topics
Thread Starter
Junior Member
Joined: Jul 2008
Posts: 49
Likes: 0
Year: 1984
Model: Cherokee
Engine: 2.5L
ok, I will have to check it later, as it was just driven, and is hot. So, I just take off the cable and then there is a bolt that i need to mark and take out?
Where do i get tthe new part?
Where do i get tthe new part?
Renix Super Guru
Joined: Mar 2008
Posts: 24,653
Likes: 19
From: In yourz postez fissin jurr spelinzs
Year: 1990XJ/1989MJ
Model: Comanche
Engine: 4.0L Renix
The bolt is a hold down you need to mark the part it holds down before removing it. The gear that comes out is a nylon gear and it is a dealer item. They come in different numbers of teeth. The number of teeth coresponds to the gear ratio and tire size to correct the speedo readings.
Renix Super Guru
Joined: Mar 2008
Posts: 24,653
Likes: 19
From: In yourz postez fissin jurr spelinzs
Year: 1990XJ/1989MJ
Model: Comanche
Engine: 4.0L Renix
Mine was a little hold down like on a distributor that is adjustable. As for the gear I had to get mine from a dealer. No parts store around me had a clue about where to source that part.
Seasoned Member
Joined: May 2008
Posts: 253
Likes: 0
From: Nor Cal
Year: Gone but not forgotten
Model: Cherokee
Engine: 4.0
possably the drive and the drivin' gear are mal adjusted from the start. If both gears look good and the cable turns this is really the only possability. its sounds to me as if the drivin' gear is not contacting the drive gear in the case.
Renix Super Guru
Joined: Mar 2008
Posts: 24,653
Likes: 19
From: In yourz postez fissin jurr spelinzs
Year: 1990XJ/1989MJ
Model: Comanche
Engine: 4.0L Renix
Thats what I was thinking but can't see how that is ever gonna happen. Thanks for that, now I feel less stupid for having that thought.


