 Fuel Gauge and Temp Gauge moves when Headlight On, Electrical Issue? |
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| ndfrigi |
 Mar 30 2015, 01:11 PM
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#1
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Advanced Member  Group: Members Posts: 2,933 Joined: 21-August 11 From: Orange County Member No.: 13,474 Region Association: Southern California 
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Hi again Teeners,
Can I ask your suggestion(s) on what should I do with my electrical issue. When I pull the headlight switch, my Fuel gauge arm will move at least 1/4" towards full and on my Oil Temp arm (from center console) will move towards red/warmer side for almost 1/4" also. So what happen is, upon turning the headlight on or park light, I will have additional fuel and oil temp will get hotter. Thanks again! Noel |
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| BigFour1973 |
Mar 30 2015, 03:44 PM
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#2
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Member Group: Members Posts: 187 Joined: 16-November 14 From: Long Beach Member No.: 18,126 Region Association: Southern California |
QUOTE(ndfrigi @ Mar 30 2015, 12:11 PM)  Hi again Teeners, Can I ask your suggestion(s) on what should I do with my electrical issue. When I pull the headlight switch, my Fuel gauge arm will move at least 1/4" towards full and on my Oil Temp arm (from center console) will move towards red/warmer side for almost 1/4" also. So what happen is, upon turning the headlight on or park light, I will have additional fuel and oil temp will get hotter. Thanks again! Noel Twist the dimmer switch on the headlight knob and see if that causes the needle to sway at all. |
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| 914Sixer |
Mar 30 2015, 03:45 PM
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#3
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914 Guru Group: Members Posts: 8,906 Joined: 17-January 05 From: San Angelo Texas Member No.: 3,457 Region Association: Southwest Region
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Check your grounds. You are experiencing a voltage drop.
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| ndfrigi |
Mar 30 2015, 03:51 PM
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#4
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Advanced Member Group: Members Posts: 2,933 Joined: 21-August 11 From: Orange County Member No.: 13,474 Region Association: Southern California
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QUOTE(914Sixer @ Mar 30 2015, 02:45 PM) Check your grounds. You are experiencing a voltage drop. I replaced the negative/ground cable from body to battery but still the same. Maybe grounds underneath the dash? |
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| 914Sixer |
Mar 30 2015, 03:58 PM
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#5
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914 Guru Group: Members Posts: 8,906 Joined: 17-January 05 From: San Angelo Texas Member No.: 3,457 Region Association: Southwest Region
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Check the headlight grounds in the front trunk.
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| r_towle |
Mar 30 2015, 04:30 PM
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#6
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Custom Member Group: Members Posts: 24,591 Joined: 9-January 03 From: Taxachusetts Member No.: 124 Region Association: North East States
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grounds at headlights
grounds at taillights grounds at relay board grounds at main fuse box, inner fender, up really high. There are more, but clean those, it should help. rich |
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| ndfrigi |
Mar 30 2015, 05:12 PM
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#7
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Advanced Member Group: Members Posts: 2,933 Joined: 21-August 11 From: Orange County Member No.: 13,474 Region Association: Southern California
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Thanks Mark and Rich also! I will try checking those grounds.
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| jim_hoyland |
Mar 30 2015, 05:33 PM
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#8
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Get that VIN ? Group: Members Posts: 9,319 Joined: 1-May 03 From: Sunset Beach, CA Member No.: 643 Region Association: Southern California
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Mine does the same thing; never figured it out, but if it stops doing it I might suspect a bigger problem coming.... (IMG:style_emoticons/default/smile.gif)
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| Dave_Darling |
Mar 30 2015, 08:49 PM
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#9
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914 Idiot Group: Members Posts: 14,991 Joined: 9-January 03 From: Silicon Valley / Kailua-Kona Member No.: 121 Region Association: Northern California
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Clean EVERY SINGLE CONNECTION in the electrical system. All plugs, all fuse connections, all grounds, battery terminals, etc. Clean and shiny metal is what you want to see.
Be prepared for the problem to come back after six months or a year... --DD |
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| ndfrigi |
Mar 30 2015, 10:33 PM
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#10
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Advanced Member Group: Members Posts: 2,933 Joined: 21-August 11 From: Orange County Member No.: 13,474 Region Association: Southern California
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QUOTE(jim_hoyland @ Mar 30 2015, 04:33 PM) Mine does the same thing; never figured it out, but if it stops doing it I might suspect a bigger problem coming.... (IMG:style_emoticons/default/smile.gif) Sir Jim, is it because we have exactly the same 75 1.8 FI copper metallic original color? Hehehe If in case I figure out the reason, I will let you know. |
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| ndfrigi |
Mar 30 2015, 10:34 PM
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#11
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Advanced Member Group: Members Posts: 2,933 Joined: 21-August 11 From: Orange County Member No.: 13,474 Region Association: Southern California
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QUOTE(Dave_Darling @ Mar 30 2015, 07:49 PM) Clean EVERY SINGLE CONNECTION in the electrical system. All plugs, all fuse connections, all grounds, battery terminals, etc. Clean and shiny metal is what you want to see. Be prepared for the problem to come back after six months or a year... --DD Thanks again Dave! Your always there to give suggestions or comments! |
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