No gauge on my dashboard is working... HELP PLEASE - Ford Mustang Forum
 
LinkBack Thread Tools
post #1 of 14 (permalink) Old 05-08-2011 Thread Starter
Apprentice
 
Jagsfan811's Avatar
 
Joined: May 2011
Location: New Haven
Posts: 107
 
Question No gauge on my dashboard is working... HELP PLEASE

none of my gauges on my dash are working?? Any idea what i should do? the previous owner told me he put power directly to the fuel gauge and found when he did it jumped to Full.. i would assume that means the gauge works.. which mean the problem is??? any help will be much appreciated.. thank you!

2012 Mustang GT Kona Blue - Corsa exhaust, Bama tuning

Gone, but not forgotten
1969 Mustang Coupe 302
Jagsfan811 is offline  
Sponsored Links
Advertisement
 
post #2 of 14 (permalink) Old 05-08-2011
Rookie
Mustang II Member
 
mikeyt65's Avatar
 
Joined: Apr 2011
Location: Hebron
Posts: 20
 
could be the gauge voltage regulator. the gauges work on a smaller voltage than 12 volts...i believe its 5 volts but dont hole me to that. its a small metal box with 2 studs on it on the back of your cluster. not sure how to check it
mikeyt65 is offline  
post #3 of 14 (permalink) Old 05-09-2011
PONY Member
Classic Member
 
cuddyk's Avatar
 
Joined: Nov 2009
Location: chappaqua
Posts: 566
 
I agree..sounds like the voltage regulator (CVR). new solid state adjustable ones are available on ebay.

Ford Mustang Instrument Cluster Voltage Regulator 5v | eBay

could also be a bad ground. is your instrument cluster screwed in to the dash?
cuddyk is offline  
post #4 of 14 (permalink) Old 05-09-2011 Thread Starter
Apprentice
 
Jagsfan811's Avatar
 
Joined: May 2011
Location: New Haven
Posts: 107
 
Quote:
Originally Posted by mikeyt65 View Post
could be the gauge voltage regulator. the gauges work on a smaller voltage than 12 volts...i believe its 5 volts but dont hole me to that. its a small metal box with 2 studs on it on the back of your cluster. not sure how to check it
Quote:
Originally Posted by cuddyk View Post
I agree..sounds like the voltage regulator (CVR). new solid state adjustable ones are available on ebay.

Ford Mustang Instrument Cluster Voltage Regulator 5v | eBay

could also be a bad ground. is your instrument cluster screwed in to the dash?
i appreciate it. i will have to check tomorrow for both the gauge regulator and the ground.

also if this helps the lights behind the gauges work and regulate as they are supposed to

2012 Mustang GT Kona Blue - Corsa exhaust, Bama tuning

Gone, but not forgotten
1969 Mustang Coupe 302
Jagsfan811 is offline  
post #5 of 14 (permalink) Old 05-10-2011
Apprentice
 
Tbirdtony's Avatar
 
Joined: Oct 2010
Location: Beaver
Posts: 135
 
jagsfan811 - The gauges are powered from a constant voltage regulator (CVR) which steps the 12 volts down to 5 volts for the gauges. Putting 12 volts on the gauges can burn them out. Do not purchase the reproduction CVRs that are sold by most Mustang parts suppliers. They are made in China and only work for a very short time and then fail. I bought one and it worked for 20 minutes. As someone stated above, there are solid state CVRs on Ebay for $25.00. I have one in my 66 Coupe. They work great.

The instrument lights have no connection to the gauges. The instrument lights work on 12 volts and are adjusted by the dimmer on the light switch.

Tbirdtony
Tbirdtony is offline  
post #6 of 14 (permalink) Old 05-10-2011
Apprentice
 
Tbirdtony's Avatar
 
Joined: Oct 2010
Location: Beaver
Posts: 135
 
jagsfan811 - Here is a link to the CVR I purchased on Ebay. It works great.

Ford Mustang Instrument Cluster Voltage Regulator 5v | eBay

Hope this info helps.

Tbirdtony
Tbirdtony is offline  
post #7 of 14 (permalink) Old 05-10-2011 Thread Starter
Apprentice
 
Jagsfan811's Avatar
 
Joined: May 2011
Location: New Haven
Posts: 107
 
Quote:
Originally Posted by Tbirdtony View Post
jagsfan811 - The gauges are powered from a constant voltage regulator (CVR) which steps the 12 volts down to 5 volts for the gauges. Putting 12 volts on the gauges can burn them out. Do not purchase the reproduction CVRs that are sold by most Mustang parts suppliers. They are made in China and only work for a very short time and then fail. I bought one and it worked for 20 minutes. As someone stated above, there are solid state CVRs on Ebay for $25.00. I have one in my 66 Coupe. They work great.

The instrument lights have no connection to the gauges. The instrument lights work on 12 volts and are adjusted by the dimmer on the light switch.
Thank you for the clarifying. would i need to take off the dashboard to access the cvr? is that usually what wrong when none of the gauges work? including the fuel and speedometer etc. for some reason i thought the oil temp worked but it could just be sitting in the middle

Also not sure if this is connected but the brake light is always on even though i know its not engaged.

2012 Mustang GT Kona Blue - Corsa exhaust, Bama tuning

Gone, but not forgotten
1969 Mustang Coupe 302
Jagsfan811 is offline  
post #8 of 14 (permalink) Old 05-10-2011
Apprentice
 
Tbirdtony's Avatar
 
Joined: Oct 2010
Location: Beaver
Posts: 135
 
Jagsfan811 - You will need to remove the instrument cluster. The CVR is mounted on the back side of the gauges. The CVR has nothing to do with the speedometer. The speedometer is a mechanical indicator. It is run by a cable that attaches to the tailshaft of your transmission. The CVR also has nothing to do with your ammeter if your car has an ammeter. The CVR only powers the fuel gauge, temp gauge, and oil pressure gauge. The brake light has nothing to do with the gauges but it sounds like you have many electrical problems. You need to invest in a schematic diagram for your year Mustang. If you can't troubleshoot electrical systems then you need to find a person who can. You will need a VOM (volt ohm meter) and know how to use it.

Tbirdtony
Tbirdtony is offline  
post #9 of 14 (permalink) Old 05-10-2011 Thread Starter
Apprentice
 
Jagsfan811's Avatar
 
Joined: May 2011
Location: New Haven
Posts: 107
 
Quote:
Originally Posted by Tbirdtony View Post
Jagsfan811 - You will need to remove the instrument cluster. The CVR is mounted on the back side of the gauges. The CVR has nothing to do with the speedometer. The speedometer is a mechanical indicator. It is run by a cable that attaches to the tailshaft of your transmission. The CVR also has nothing to do with your ammeter if your car has an ammeter. The CVR only powers the fuel gauge, temp gauge, and oil pressure gauge. The brake light has nothing to do with the gauges but it sounds like you have many electrical problems. You need to invest in a schematic diagram for your year Mustang. If you can't troubleshoot electrical systems then you need to find a person who can. You will need a VOM (volt ohm meter) and know how to use it.
Thank you, yeah that what it seems like i have to do (invest in a wiring diagram) in school i have learned how to use a VOM (actually finishing that the circuits class up now) thanks for the clarifications and all your help!

2012 Mustang GT Kona Blue - Corsa exhaust, Bama tuning

Gone, but not forgotten
1969 Mustang Coupe 302
Jagsfan811 is offline  
Rookie
 
Osprey Mech's Avatar
 
Joined: Apr 2011
Location: Jacksonville
Posts: 15
 
Check the motor for the gauge wires unplug the dash gauge and do a continuity check it will make a beep when you have a good wire. If you have good wires then the regulator will have no problem working right.
Osprey Mech is offline  
post #11 of 14 (permalink) Old 05-10-2011 Thread Starter
Apprentice
 
Jagsfan811's Avatar
 
Joined: May 2011
Location: New Haven
Posts: 107
 
Quote:
Originally Posted by Osprey Mech View Post
Check the motor for the gauge wires unplug the dash gauge and do a continuity check it will make a beep when you have a good wire. If you have good wires then the regulator will have no problem working right.
how many ohms should i be reading? or am i only looking for a beap?

2012 Mustang GT Kona Blue - Corsa exhaust, Bama tuning

Gone, but not forgotten
1969 Mustang Coupe 302
Jagsfan811 is offline  
Apprentice
 
Tbirdtony's Avatar
 
Joined: Oct 2010
Location: Beaver
Posts: 135
 
Jagsfan811 - OspreyMech's comments are confusing. His sentence doesn't make sense. Just get a wiring diagram for your model Mustang and check out the wires with a VOM.

Tbirdtony
Tbirdtony is offline  
post #13 of 14 (permalink) Old 05-11-2011 Thread Starter
Apprentice
 
Jagsfan811's Avatar
 
Joined: May 2011
Location: New Haven
Posts: 107
 
Quote:
Originally Posted by Tbirdtony View Post
Jagsfan811 - OspreyMech's comments are confusing. His sentence doesn't make sense. Just get a wiring diagram for your model Mustang and check out the wires with a VOM.
will do thank you!

2012 Mustang GT Kona Blue - Corsa exhaust, Bama tuning

Gone, but not forgotten
1969 Mustang Coupe 302
Jagsfan811 is offline  
post #14 of 14 (permalink) Old 05-11-2011 Thread Starter
Apprentice
 
Jagsfan811's Avatar
 
Joined: May 2011
Location: New Haven
Posts: 107
 
does anyone have any suggestions on how to take off the speedometer cable? i got the dash off and i cant get the gauge cluster off because of that speedometer cable

2012 Mustang GT Kona Blue - Corsa exhaust, Bama tuning

Gone, but not forgotten
1969 Mustang Coupe 302
Jagsfan811 is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Ford Mustang Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a VALID email address for yourself, otherwise you will not receive the necessary confirmation email needed to confirm, validate and activate your new AFM member account.

Failure to provide a VALID email address, will result in the cancellation of your new AFM member account registration.

Email Address:
OR

Log-in









Random Question

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may post new threads
You may 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 Off
Pingbacks are Off
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome


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 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183