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Author
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Topic: Temp goes up w/ light on
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70SportsRoof
Gearhead Posts: 777
From: Phoenix, AZ
Registered: Dec 2001
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posted 03-30-2002 04:37 PM
   
At night when I've got my lights on my temp gauge reads too high. Almost reading at 1/2 mark, but during the day it reads lower. During the day it's been 85 temp, at night we're at about 60-65, so it should run cooler at night. I don't think the car is actually warmer, I think the gauge is reading wrong. It only happens with the headlights, dash lights, etc on. Could this be a short, or maybe the IVR behind the gauges? Anybody ever have this happen? BTW the car is my '70, with full gauges.------------------
1970 Deluxe SportsRoof (63B),(2)46 Ford trucks, 47 Ford truck, 57 Ford Fairlane 500 4dr, '72 Olds Vista Cruiser(for sale), '88 Bronco II(for sale)...running out of room, selling some of my projects
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Fastymz
Moderator Posts: 12015
From: Reno Nv USA MEM#1240
Registered: Apr 2001
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posted 03-30-2002 04:48 PM
I'd say it's the Volt regulator for the gauges.
SCOOP
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65 coupe,Big Boss 429 hood scoop,Crager SS,Black Suede. https://mustangsandmore.com/ubb/Fastymz.html
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richard bohm
Gearhead Posts: 373
From: tucson,az-luray,va
Registered: May 2001
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posted 03-31-2002 01:29 AM
you have the same problem my 84 F-250 had, bad ground, or no ground connection from the engine to the body. run a 10 gauge wire from the batt to the body, or from the body to the engine, or both. that should cure your problem. what is happening is the lights are trying to ground them selves through the gauge ground.
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70SportsRoof
Gearhead Posts: 777
From: Phoenix, AZ
Registered: Dec 2001
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posted 03-31-2002 03:13 AM
I'll give the ground a try before I go ripping into the dash. Funny thing is this just occured a few days ago, never had the prob before. It's worth giving it a try since I really hate to have to remove the dash, though I got to soon since my high beam indicator went out. If anybody else has any ideas, I'll try them too. Thanks all.------------------
1970 Deluxe SportsRoof (63B),(2)46 Ford trucks, 47 Ford truck, 57 Ford Fairlane 500 4dr, '72 Olds Vista Cruiser(for sale), '88 Bronco II(for sale)...running out of room, selling some of my projects
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Ryan Wilke
Gearhead Posts: 1539
From: Stanton, Michigan 49707
Registered: Oct 2000
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posted 03-31-2002 01:34 PM
70SR:
Just for grins & giggles, I'd try running the car in the daytime WITH the lights on and see if the gage reads higher then, turn the lights off and see what happens...... just an idea. Good Luck!!
Ryan  ------------------
The '3-Pedal Attitude' Kid
in a '69 FB w/ 306 now, but
the 460+ is coming... :D
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bluestreek
Gearhead Posts: 1332
From: Athens,GA
Registered: Jul 2001
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posted 03-31-2002 01:49 PM
Mine does something similar, except all the guages drift upwards. The temp hand is more noticeable. Regulator maybe.
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johnmustang
Gearhead Posts: 4504
From: Vancouver Island , British Columbia , Canada
Registered: Nov 2001
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posted 03-31-2002 02:12 PM
Had the same problem with my 68 stang , 6cyl, finally tracked it down to a faulty ignition switch, just a thought , but , check it out. JOHN ------------------
65 2+2 FASTBACK
68 COUPE
87 TAURUS WAGON
98 F150 XLT TRITON V8 4.6, 4 WHEEL DRIVE
Member:Vancouver Island Mustang Association
M&M #1710
MyPhotoPage
MY TRUCK
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richard bohm
Gearhead Posts: 373
From: tucson,az-luray,va
Registered: May 2001
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posted 03-31-2002 10:12 PM
bluestreek, your might be a faulty vr.
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