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Classic Mustangs (Tech) Technical discussions about the Mustangs of yester-year.

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Old 12-28-2010, 01:16 AM   #1
Dro21
 
Join Date: Aug 2010
Vehicle: 1969 Mustang
Location: California
Posts: 39
Default Gauges not working?

Well my gauges dont work(they go crazy) fuel gauge always show alittle over empty or 1/4 full, Temperature goes past the H, Fuel pressure goes high. My father said when he got the car around 6yrs they worked fine. What do you guys think it is?

-Regulator?
-Printed circuit?
-Gauge touching metal(if this was the case would the gauges even move?)
-Ground?(where do i look)
-Gauge?

Alright what do you guys think is the culprit? where to start?

thanks in advance
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Old 12-28-2010, 06:15 AM   #2
2+2GT
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Start by checking the regulator. Your test probe should flash.
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Old 12-28-2010, 08:41 PM   #3
Dro21
 
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Quote:
Originally Posted by 2+2GT View Post
Start by checking the regulator. Your test probe should flash.
Im sorry to sound dumb but the cluster has to be connected right to check the regulator right
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Old 12-29-2010, 06:44 AM   #4
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Sounds like the $30 P.O.S. regulator to me (I wish there was a better alternative). I am not an electrician, but I believe that you need to have the cluster connected. If you have a ohms meter use that to check the regulator. If my memory serves me correctly, the 12 volts coming from the battery should be reduced to 5 ohms after going through the regulator. Do a google search about the subject and you'll find some good articles.

http://www.allfordmustangs.com/forum...ck-gauges.html
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Old 12-29-2010, 01:25 PM   #5
TexasAxMan
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Quote:
Originally Posted by Stangatic View Post
Sounds like the $30 P.O.S. regulator to me (I wish there was a better alternative).
There is an alternative, build your own solid state one. Only costs about $5-$10 and will last the life of the car. There are plenty of how-tos on the net, just search.
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Old 12-30-2010, 06:07 AM   #6
tx65coupe
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I also recommend the electronic instrument cluster regulator. We made one. You can build your own or buy this one on Ebay.

http://chris66dad.tripod.com/id29.html

http://cgi.ebay.com/ebaymotors/Ford-...Q5fAccessories
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Last edited by tx65coupe; 12-30-2010 at 06:11 AM.
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Old 12-30-2010, 06:17 AM   #7
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Good one tx65coupe> I was actually looking at the father and son site that you recommended yesterday morning and saw their solid state cluster regulator. I am trying to decide if I should build it my self or buy the one off ebay.
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1966 289 Mustang coupe, Sahara Beige w/ black interior: Tuff Dawg Engines 302/ 375hp 393tq w/ Comp Cams Mutha Thumpr 287TH7 Cam. Ported, Polished, 3 angle valve job, Performer RPM casting heads. 9.5 comp ratio. Edelbrock 650 AVS carb. Promotion Powertrain 295SHD T-5. Gt spec suspension. Pacer 15" wheels.

2000 Gt convert ***SOLD*** :*(
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Old 12-30-2010, 10:32 AM   #8
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I bought that one off ebay. It's made by Ivan, a member of this forum (ic237). PM him if you have any questions.

http://mustangforums.com/forum/class...-question.html
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Old 12-30-2010, 11:40 PM   #9
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i already bought a voltage regulator from Napa, i should of ordered 1 of those of ebay...On the other hand when installing the new circuit and regulator do i have to disconnect the battery or do anything prior to connecting the Gauge cluster?
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Old 12-31-2010, 05:58 AM   #10
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I went through a few of those replacement stock type ones and none of them worked right. The original one works better than any of them did.
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Old 12-31-2010, 05:58 AM
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