Club Cobra Keith Craft Racing  

Go Back   Club Cobra > Manufacturers, Engine Builders, tools, and parts. > Lone Star Classics---Speak with Dennis & Steve

Welcome to Club Cobra!  The World's largest non biased Shelby Cobra related site!

  •  » Representation from nearly all Cobra/Daytona/GT40 manufacturers
  •  » Help from all over the world for your questions
  •  » Build logs for you and all members
  •  » Blogs
  •  » Image Gallery
  •  » Many thousands of members and nearly 1 million posts! 

YES! I want to register an account for free right now!  p.s.: For registered members this ad will NOT show

Nevada Classics
Keith Craft Racing
Main Menu
Module Jump:
Nevada Classics
Nevada Classics
MMG Superformance
Advertise at CC
Banner Ad Rates
MMG Superformance
Planet Cobra
Keith Craft Racing
December 2018
S M T W T F S
            1
2 3 4 5 6 7 8
9 10 11 12 13 14 15
16 17 18 19 20 21 22
23 24 25 26 27 28 29
30 31          
  #1 (permalink)  
Old 12-01-2018, 02:57 PM
Texasdoc's Avatar
CC Member
Visit my Photo Gallery

 
Join Date: Feb 2012
Location: Keller, TX
Cobra Make, Engine: Lonestar Classics LS427. Self-built 408W, AFR 195 heads, Performer RPM Intake, Quick Fuel 750, 407rwhp, 479rwtq
Posts: 513
Not Ranked     
Default VDO Series one speedometer

Does anyone have a VDO speedometer that they are willing to part with that I can use for parts? My Series 1 speedometer is freaking out and I need to see if I can fix it.

For the most part, it works ok. While decelerating, at almost a stop, the speed indicator needle hovers at 20 mph even as I continue to slow down. Then, as soon as I stop, the needle drops suddenly to zero. This happens almost every time. Then after driving for about 20 minutes, the whole gauge starts to freak out. The mileage LCD readout digits start blinking irregular characters (not even numbers or letters) and the speed indicator jumps to a random location. I was sitting at a stop light and looked down - it was pegged around 160! I reached behind the gauge and unplugged the power but the needle stayed there until the next restart.

It isn't the sender, the tko600 stock sender seems to be working fine, plus it did the slow down bouncy thing when I had the T5 with the mechanical send in the car. I replaced the sender to gauge wires as well.

I opened the gauge and looked around the circuit board but didn't see any obvious blown capacitors or resistors. I didn't see any cold solder joints.

None of the other gauges are acting up and the power is steady. They all share a common power source and ground.

Last edited by Texasdoc; 12-01-2018 at 03:14 PM..
Reply With Quote
Sponsored Links
Sponsored Links
  #2 (permalink)  
Old 12-01-2018, 05:54 PM
Karl Bebout's Avatar
CC Member
Visit my Photo Gallery

 
Join Date: Jun 2001
Location: Mesa, AZ
Cobra Make, Engine: ERA #2119 289FIA
Posts: 4,575
Not Ranked     
Default

Check with Speedhut. They make excellent meters, have excellent customer service, have a nice discount special going on for the holidays. They can match the size, face, pointers, and font from just about all makes.

Worth taking a look. My 2 worth.
__________________
Karlos
"In the Land of the Pigs, The Butcher is King"
Reply With Quote
  #3 (permalink)  
Old 12-01-2018, 06:32 PM
Texasdoc's Avatar
CC Member
Visit my Photo Gallery

 
Join Date: Feb 2012
Location: Keller, TX
Cobra Make, Engine: Lonestar Classics LS427. Self-built 408W, AFR 195 heads, Performer RPM Intake, Quick Fuel 750, 407rwhp, 479rwtq
Posts: 513
Not Ranked     
Default

If I change out the gauge, the odometer will be wrong then I'll have to deal with that paperwork if I ever sell. Hoping to fix this one. If not I can get a new one.
Reply With Quote
  #4 (permalink)  
Old 12-01-2018, 06:44 PM
Karl Bebout's Avatar
CC Member
Visit my Photo Gallery

 
Join Date: Jun 2001
Location: Mesa, AZ
Cobra Make, Engine: ERA #2119 289FIA
Posts: 4,575
Not Ranked     
Default

AuContraire Doc, Depending on which Speedhut speedo, they can either set the odometer at what mileage you want it to show or you can set the GPS driven speedo to show what you want with a sequence of button pushing.
__________________
Karlos
"In the Land of the Pigs, The Butcher is King"
Reply With Quote
  #5 (permalink)  
Old 12-01-2018, 07:04 PM
spdbrake's Avatar
CC Member
Visit my Photo Gallery

 
Join Date: Dec 2015
Location: DFW, TX
Cobra Make, Engine: BDR #53, 408W
Posts: 549
Not Ranked     
Default

I had a similar issue on my VDO's odometer flaking out at low speed and at idle. Turned out to be a loose connection at the inductive pickup on the diff. (mine does not use a trans sender)
http://www.vdo-gauges.com/media/inst...ter%28c%29.pdf

If your sender is attached to the Trans gear its a Hall Effect unit and that IS a failure symptom of those.

There is a shop in Austin that can repair your Speedo if you don't have that issue.
Overseas Speedometer | Speedometer & Odometer Repairs

Last edited by spdbrake; 12-01-2018 at 07:29 PM.. Reason: incomplete
Reply With Quote
  #6 (permalink)  
Old 12-02-2018, 03:30 AM
Ron61's Avatar
Senior Club Cobra Member
Visit my Photo Gallery

 
Join Date: Dec 2001
Location: Shasta Lake, CA
Cobra Make, Engine:
Posts: 25,797
Not Ranked     
Default

I had a similar problem with the one in my Cobra and the hall effect unit was good so I started tracing the leads. Turned out that the sending lead had a broken place in the insulation and that was touching a place that caused it. I just replaced the leads and never had another problem.

Ron
__________________
Ron 61
Ronnie Widener


View my Miscellaneous Gallery
Reply With Quote
  #7 (permalink)  
Old 12-02-2018, 05:37 AM
CC Member
Visit my Photo Gallery

 
Join Date: Aug 2000
Location: fort worth,texas,us,
Posts: 19
Not Ranked     
Default

I had the exact issue, turned out to be a loose connection on the back of the unit, cleaned and tightened been working perfect
Reply With Quote
  #8 (permalink)  
Old 12-02-2018, 08:44 AM
CC Member
Visit my Photo Gallery

 
Join Date: Dec 2016
Cobra Make, Engine: ERA#375, FE 428, 1966 block, built by Jim Coleman Racing Engines, Stratford, CT
Posts: 56
Not Ranked     
Default

I would suggest you check your wiring first. Then if it all checks out you may want to call Bob's Speedometer Repair. He has done some great work for me on repair and also restoration of various gauges....

Here is his link...

https://www.bobsspeedometer.com/1/120/index.asp
__________________
ERA 375 - former Clubcobra ID REDSC400
TESLA P90D is my daily driver
Reply With Quote
  #9 (permalink)  
Old 12-02-2018, 06:14 PM
Texasdoc's Avatar
CC Member
Visit my Photo Gallery

 
Join Date: Feb 2012
Location: Keller, TX
Cobra Make, Engine: Lonestar Classics LS427. Self-built 408W, AFR 195 heads, Performer RPM Intake, Quick Fuel 750, 407rwhp, 479rwtq
Posts: 513
Not Ranked     
Default

I'll check the wiring again but already did that. I don't know how the tko speed sensor works (Hall vs magnetic vs voltage) or how to check the sender itself. I will just have to check the wiring and connectors. Right now I have a shielded wire from the gauge to the trans, two signal wires to the sender and the shielding grounded at the gauge end. I'll check it all again.

Is the sender on the tko replaceable? I can see replacement connectors but not sensors. Thanks again.

Last edited by Texasdoc; 12-02-2018 at 07:25 PM..
Reply With Quote
  #10 (permalink)  
Old 12-03-2018, 07:02 AM
spdbrake's Avatar
CC Member
Visit my Photo Gallery

 
Join Date: Dec 2015
Location: DFW, TX
Cobra Make, Engine: BDR #53, 408W
Posts: 549
Not Ranked     
Default

If you have a TKO, TR3550,T56,T5 Ford sender it should look like this
https://www.summitracing.com/tx/part...0013/overview/

Speedo Sensor, 3 wire Digital, Ford gear drive with 10' Pigtail harness

They are made in a 90 deg offset for clearance as well.

Best if you can get a PN off yours to see if its a 16 PPR (pulse per rev) or an 8 PPR unit.

16 PPR is more common.

Last edited by spdbrake; 12-03-2018 at 07:06 AM.. Reason: incomplete
Reply With Quote
  #11 (permalink)  
Old 12-03-2018, 06:44 PM
Texasdoc's Avatar
CC Member
Visit my Photo Gallery

 
Join Date: Feb 2012
Location: Keller, TX
Cobra Make, Engine: Lonestar Classics LS427. Self-built 408W, AFR 195 heads, Performer RPM Intake, Quick Fuel 750, 407rwhp, 479rwtq
Posts: 513
Not Ranked     
Default

Quote:
Originally Posted by spdbrake View Post
That looks like the mechanical speed sensor I had on the T5. The TKO has an electronic sensor that only has two wires coming out of it. I think it is an inductive pickup (whatever that means). I'll get some new shielded wire and re-run the wire from the transmission to the gauge. I will also put it on its own power feed and ground circuit to avoid contamination from the other gauges.

I'll eventually return and report when I get it done. I may have just run out of driving season this year. It's supposed to be 29 tomorrow morning. It was almost 80 on Saturday.
Reply With Quote
  #12 (permalink)  
Old 12-03-2018, 07:17 PM
spdbrake's Avatar
CC Member
Visit my Photo Gallery

 
Join Date: Dec 2015
Location: DFW, TX
Cobra Make, Engine: BDR #53, 408W
Posts: 549
Not Ranked     
Default

Yes I see that in the repair manual. I've only seen those on OEM installations. They are pretty bullet proof. No moving parts its just a mag pickup. If you remove it and it rattles its toast though.

Supposed to be 31 here tonight (just south of Ft. Worth)
Reply With Quote
  #13 (permalink)  
Old 12-06-2018, 02:05 PM
Registered User
Visit my Photo Gallery

 
Join Date: Jul 2003
Location: Lake Ridge, VA
Cobra Make, Engine: Lone Star Classics, Ft Worth, TX
Posts: 3
Not Ranked     
Default

I needed a VDO oil temp gauge and talked to the mfg. They were good to work with, you might call them and ask about your problem.
__________________
Cap'n Crunch
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -7. The time now is 05:04 PM.


Powered by vBulletin® Version 3.8.0
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.6.0
The representations expressed are the representations and opinions of the clubcobra.com forum members and do not necessarily reflect the opinions and viewpoints of the site owners, moderators, Shelby American, any other replica manufacturer, Ford Motor Company. This website has been planned and developed by clubcobra.com and its forum members and should not be construed as being endorsed by Ford Motor Company, or Shelby American or any other manufacturer unless expressly noted by that entity. "Cobra" and the Cobra logo are registered trademarks for Ford Motor Co., Inc. clubcobra.com forum members agree not to post any copyrighted material unless the copyrighted material is owned by you. Although we do not and cannot review the messages posted and are not responsible for the content of any of these messages, we reserve the right to delete any message for any reason whatsoever. You remain solely responsible for the content of your messages, and you agree to indemnify and hold us harmless with respect to any claim based upon transmission of your message(s). Thank you for visiting clubcobra.com. For full policy documentation refer to the following link: CC Policy
Links monetized by VigLink