4.0 swap speedometer not working - JeepForum.com
Search  
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > Models > Jeep CJ Forum > 4.0 swap speedometer not working

FS: Jeep Fog Light LED Bulbs! Several Brightness Options! Stainless Steel Door Hinge PinsPoly Door Hinge Bushings

Reply
Unread 04-07-2013, 07:14 AM   #1
Gigemags05
Registered User
1980 CJ7 
 
Join Date: Oct 2012
Location: Denton, TX
Posts: 627
Engine is running great, but the speedometer isn't working.

I used a new vss for a 91 yj, and bought an adaptor so the threads will match. I am using Hesco's harness.

Any ideas on why it might not be working?
Does anyone have pictures of how the vss should fit onto the speedometer cable?

Also, when installing, I pulled the small gear out. I put it back in but is it possible it isn't seated right? I figured it'd only go in one way with the teeth how they are.

Gigemags05 is offline   Reply With Quote
Unread 04-07-2013, 08:53 AM   #2
frhrwa
Fish'n Fool
 
frhrwa's Avatar
1984 CJ7 
 
Join Date: Dec 2008
Location: Deer Park (north of Spokane), Washington
Posts: 1,362
sounds like the gear in the tranny or the cable .. most likely the gear..
__________________
I want to die in my sleep like my grandfather, not screaming in terror like the passengers in his JEEP!...
frhrwa is offline   Reply With Quote
Unread 04-07-2013, 09:01 AM   #3
Gigemags05
Registered User
1980 CJ7 
 
Join Date: Oct 2012
Location: Denton, TX
Posts: 627
Is there a specific way it has to go into the tranny? I'm sure that's the problem since I removed it. Any trick to it?
Gigemags05 is offline   Reply With Quote
Unread 04-07-2013, 11:32 AM   #4
frhrwa
Fish'n Fool
 
frhrwa's Avatar
1984 CJ7 
 
Join Date: Dec 2008
Location: Deer Park (north of Spokane), Washington
Posts: 1,362
how would you like a JEEP FSM manual on a DVD that covers '81-'87.. but the tranny and speedo connection should be the same and most of the info will match up.. I can mail you a copy if you pm me name and address.. wayne (it helps a lot, sorry its not the '80 version)..
__________________
I want to die in my sleep like my grandfather, not screaming in terror like the passengers in his JEEP!...
frhrwa is offline   Reply With Quote
Unread 04-07-2013, 12:41 PM   #5
titomars
Registered User
1981 CJ7 
 
Join Date: Aug 2009
Location: Santa Rosa, California
Posts: 1,797
Quote:
Originally Posted by Gigemags05 View Post
Is there a specific way it has to go into the tranny? I'm sure that's the problem since I removed it. Any trick to it?
If you are running the original trans yes it has to indexed correctly in the trans housing. The speedo gear sleeve (adapter) has lines and numbers marked around it's face. To line up and mesh the gear by its tooth count.
__________________
I don't worry about my MPG's. I see it as the price of admission...............Damn what a ride!!!
---------------------------------------------------------------------------
**Originally Posted by wm69 **
This is the kinda whiny crap I would expect to see in the JK forum. We drive rough riding, leaking, gas guzzling CJ's. Rattle can it and throw it in your Jeep.
---------------------------------------------------------------------------
1981 Jeep CJ7 258 4.0 HO head, T-5, D300, D30, D44, SOA
1994 Jeep XJ 4.0 HO, AX-15 (My Beater)
1946 Bantam T3-C (original Calif trailer, no rust)
titomars is offline   Reply With Quote
Unread 04-07-2013, 12:50 PM   #6
Gigemags05
Registered User
1980 CJ7 
 
Join Date: Oct 2012
Location: Denton, TX
Posts: 627
Thank you very much for the offer. I have an fsm for the cj, and when the 4.2 was in it, the speedometer worked great. But since I had to use a new vss and an adaptor for the 4.0 it isn't working now.
Gigemags05 is offline   Reply With Quote
Unread 04-07-2013, 12:52 PM   #7
Gigemags05
Registered User
1980 CJ7 
 
Join Date: Oct 2012
Location: Denton, TX
Posts: 627
Quote:
Originally Posted by titomars

If you are running the original trans yes it has to indexed correctly in the trans housing. The speedo gear sleeve (adapter) has lines and numbers marked around it's face. To line up and mesh the gear by its tooth count.
Ok, so there will be markings on the speedo gear I pulled out? I'm sure I put it back in the wrong way.
Gigemags05 is offline   Reply With Quote
Unread 04-07-2013, 08:10 PM   #8
Gigemags05
Registered User
1980 CJ7 
 
Join Date: Oct 2012
Location: Denton, TX
Posts: 627
There weren't any marks, but I was able toget the gear in correctly and the speedometer now works.
Gigemags05 is offline   Reply With Quote




Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.