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#1 |
Registered User
Join Date: May 2002
Location: beaverton, or. usa
Posts: 60
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I am having some trouble with my temp gauge. As soon as I turn the key to the on position the needle pegs!! Am I missing a ground or something? I replaced the sending unit and that still did not fix the problem. If someone could shed a little light on this it would be very helpful. Thank you.
------------------ 70 swb restored by me I hope to drive it some day!! portland OR
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70 swb restored by myself and some help from this board!! I hope to drive it some day!! portland OR |
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#2 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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The wire connected to the sending unit is probably grounded somewhere between the sending unit and the guage. Inspect the wire carefully.
------------------ '69 G.M.C. 350/350. Trying to clean up the left over damage from the Dope-Smokin-Old-Man I've been dubbed the Longhorn Freak/Fanatic/Expert, I just hope I can live up to it. FINALLY got the HORNIAC...a '70 one ton Longhorn with a Pontiac 350/350 and lots of 'personality'. Check out The Longhorn Webite. E-mail longhornmail@yahoo.com My name is Andy...not Randy...I'm in Ohio...Not Illinois...close enough? Columbus Ohio |
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#3 |
Registered User
Join Date: Feb 2002
Location: tallahassee, fl usa
Posts: 11
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My temperature gauge use to bounce back and forth like crazy. I cleaned the wire attached to the sending unit and haven't had a problem since.
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1972 Cheyenne 400BB |
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#4 |
Registered User
Join Date: Jan 2002
Location: Fayette, Alabama
Posts: 155
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I have same problem with my longhorn. I checked the wire, I finally bought another gauge (aftermarket) and mounted it below the dash. I think the resistor on the gauge itself is bad.
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Fayette Alabama |
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#5 |
Registered User
Join Date: May 2002
Location: beaverton, or. usa
Posts: 60
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I checked the wire and It seems to be ok I will check agian and clean conections but I think I may have to replace gauge. thanks for the help.
------------------ 70 swb restored by me I hope to drive it some day!! portland OR
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70 swb restored by myself and some help from this board!! I hope to drive it some day!! portland OR |
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#6 |
Registered User
Join Date: Mar 2002
Location: Agua Dulce, Ca. usa
Posts: 179
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When you take the wire of the temp sender and touch it to ground it will show a overheat situation on the gage. What it sound like is that your wire is shorted at some place or at the sending unit. Take the wire off the sender is it still showing hot then the wire is most likey shorted to ground if not then I would go to the gage. Ed ke6bnl
------------------ Ed ke6bnl Agua Dulce 70 S.E. Los Angeles 70 Chevy short bed Sorry 50 F1 pu Sorry 63 Ford Econoline pu
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Ed ke6bnl Agua Dulce 70 S.E. Los Angeles 70 Chevy short bed 1948 F3 ford pu 1949 F1 stock V8 flathead 3 on floor 1950 F1 pu street rod 1948 F6 Ford Dually/350sbc no bed stock trans&rear 1972 El Camino 4" chop 1953 Chevy 3100 2b daily driver 1970 SB 4X4 400ci 6in lift |
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#7 |
Registered User
Join Date: May 2002
Location: beaverton, or. usa
Posts: 60
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when I remove wire from sending unit it reads cold, as soon as I toch the wire to the sending unit it hits the peg above hot. it hits so hard I can hear it outside the cab!! new gage here I come. Thank you for the help.
------------------ 70 swb restored by myself and some help from this bord! I hope to drive it some day!! portland OR [This message has been edited by thood (edited May 24, 2002).]
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70 swb restored by myself and some help from this board!! I hope to drive it some day!! portland OR |
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#8 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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Get another sending unit then. The parts guy either gave you the wrong one, (dummy light part #) Or the parts guy's computer lied to him causing the part # problem.
Do you have it mounted on the intake, or on the driver's side head? It should be on the head. ------------------ '69 G.M.C. 350/350. Trying to clean up the left over damage from the Dope-Smokin-Old-Man I've been dubbed the Longhorn Freak/Fanatic/Expert, I just hope I can live up to it. FINALLY got the HORNIAC...a '70 one ton Longhorn with a Pontiac 350/350 and lots of 'personality'. Check out The Longhorn Webite. E-mail longhornmail@yahoo.com My name is Andy...not Randy...I'm in Ohio...Not Illinois...close enough? Columbus Ohio |
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#9 |
Semper Fidelis
Join Date: Dec 2001
Location: Cedar City, Utah
Posts: 654
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I have later model 305 heads and the hole is smaller than the sender I have, what sender can I use?
------------------ 72 C-20 parts 70 C-10 lwb driver 69 C-10 lwb parts 72 K-5 Blazer-NEW! Lamar,Missouri Semper Fidelis
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72 Chevy C 20 with 402 For sale 85 GMC K2500 ![]() 83 Trans Am Cedar City, Utah (Missouri Native) |
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#10 |
Registered User
Join Date: May 2002
Location: beaverton, or. usa
Posts: 60
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Longhornmail, The sending unit is in the head (drivers side). I have tried two diferent sending units as of now and they both work the same way. is there some way to tell between a gage unit and a light unit?
------------------ 70 swb restored by myself and some help from this bord!! I hope to drive it some day!! portland OR
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70 swb restored by myself and some help from this board!! I hope to drive it some day!! portland OR |
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#11 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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I'm sure there is, but I don't know what to look for.
------------------ '69 G.M.C. 350/350. Trying to clean up the left over damage from the Dope-Smokin-Old-Man I've been dubbed the Longhorn Freak/Fanatic/Expert, I just hope I can live up to it. FINALLY got the HORNIAC...a '70 one ton Longhorn with a Pontiac 350/350 and lots of 'personality'. Check out The Longhorn Webite. E-mail longhornmail@yahoo.com My name is Andy...not Randy...I'm in Ohio...Not Illinois...close enough? Columbus Ohio |
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