Fuel/Temp voltage regulator

General topics.

Moderators: notoptoy, S Allen, Solex68

Post Reply
User avatar
jarhead
Roadster Enthusiast
Posts: 230
Joined: Sun Sep 09, 2012 11:55 am
Location: Fairfield, CT

Fuel/Temp voltage regulator

Post by jarhead »

My previously functioning fuel and temperature gauges stopped working. I checked connections at the voltage regulator but everything looks good. Is there something else it could be? Do these regulators fail? Maybe I should replace the terminal connections?

Lee
Lee
'66 SPL311-00676
User avatar
Gregs672000
Roadster Fanatic-Site Supporter
Posts: 9428
Joined: Fri Aug 07, 2009 11:47 pm
Location: Tacoma, WA

Re: Fuel/Temp voltage regulator

Post by Gregs672000 »

Only based on my experience, if both are failing it's very likely still at the regulator. I've heard they are expensive which has prompted some smart folks here to create an alternative or a fix... stay tuned, someone will answer!
Greg Burrows
'67 2000 #588
Tacoma, WA
User avatar
Solex68
Site Supporter
Posts: 2210
Joined: Fri May 25, 2012 3:30 pm
Location: Laguna Hills, CA
Model: 2000
Year: High Windshield-68-70
Contact:

Re: Fuel/Temp voltage regulator

Post by Solex68 »

Yes, these regulators do fail. Consider replacing with a modern one. I heard earlier VW bug ones work as well. There is a wiki article on building your own as well. I've built a few but mine was a different approach than the wiki.
Greg a.k.a SOLEX68 - http://www.datsunvents.com/
Laguna Hills, CA
68 2000
Always willing to help another Datsun Roadster owner
Pending installs: Stan Stealth Dizzy
User avatar
rwmann
Roadster Fanatic-Site Supporter
Posts: 769
Joined: Wed Aug 20, 2008 6:11 am
Location: Port Washington, NY
Model: 2000
Year: High Windshield-68-70

Re: Fuel/Temp voltage regulator

Post by rwmann »

I use an LM2596 5A DC-DC Step-Down converter, a $5 PC board-mounted electronic module about the size of the OEM pulsing bi-metallic regulator, whose steady output voltage is LED displayed and adjustable in a range that mimics the ‘average’ OEM regulator output, and also allows some ‘electronic tuning’ of fuel and temperature gauge indications.
You do not have the required permissions to view the files attached to this post.
Last edited by rwmann on Sun Jul 11, 2021 3:35 pm, edited 2 times in total.
User avatar
nismou20
Roadsteraholic
Posts: 1523
Joined: Thu Jul 07, 2005 2:16 pm
Location: Pasadena, Ca

Re: Fuel/Temp voltage regulator

Post by nismou20 »

Tech/Wiki has a nice DIY that I followed. I was lazy and just wired up without tucking into can. Works super! Check your ground on yours before moving on.
2004 Chevy Tracker
2010 RAV4
1969 Datsun Roadster
2005 Lotus Elise
1995 Toyota Tercel (Poormans Corolla)
2001 Fleetwood Jamboree RV
devo
Roadsteraholic
Posts: 551
Joined: Mon Jun 17, 2013 7:58 pm
Location: Texas
Model: 1500/1600
Year: Low Windshield-64-67.5

Re: Fuel/Temp voltage regulator

Post by devo »

Super easy and inexpensive to build:

http://www.311s.org/pmwiki-311/pmwiki.p ... tRegFix2.0
User avatar
jarhead
Roadster Enthusiast
Posts: 230
Joined: Sun Sep 09, 2012 11:55 am
Location: Fairfield, CT

Re: Fuel/Temp voltage regulator

Post by jarhead »

thanks
Lee
'66 SPL311-00676
Post Reply