Trouble shooting question
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Trouble shooting question
My gas gauge and my temp gauge on my truck(65 300 ci stock) do not work.
Unlike the wiring to the back of the truck there are a lot of wires to inspect, so is it better to get new gauges (where do I find them) and work from there?
The wires have power at the back of the instrument cluster and I cleaned the posts and fittings but no luck. Does that mean the sending units are bad? I just would like to know the best place to start.
Thanks in advance,
L
P.S.
How do I put the specs for my truck at the bottom of my posts? A pic of the truck would be nice also.
Thanks
L
Unlike the wiring to the back of the truck there are a lot of wires to inspect, so is it better to get new gauges (where do I find them) and work from there?
The wires have power at the back of the instrument cluster and I cleaned the posts and fittings but no luck. Does that mean the sending units are bad? I just would like to know the best place to start.
Thanks in advance,
L
P.S.
How do I put the specs for my truck at the bottom of my posts? A pic of the truck would be nice also.
Thanks
L
Lead Driver
Joined: Aug 2003
Posts: 6,305
Likes: 18
From: Boulder Creek, Ca
Both sending units bad, guess anything is possible with these vintage trucks, particularly if setting for any length of time. There's also a 'Constant Voltage Regular' looks like a small metal box attached to the back of the instrument cluster. Recall member mentioning some of the after market units are made of plastic. Anyhow, the unit regulates the voltage to the instruments, take a volt meter and should vacilate from between 0-10 volts, if yu don't get a reading then it's bad.
Pic of the circuit:
http://i300.photobucket.com/albums/n...charge0001.jpg
Pic of the circuit:
http://i300.photobucket.com/albums/n...charge0001.jpg
Elder User
Joined: Oct 2005
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From: Monroe, Louisiana
Click on the User CP (left side of your screen) and add your info under the "edit signature" section of your profile.
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
Likes: 785
From: Simi Valley, CA
My gas gauge and my temp gauge on my truck(65 300 ci stock) do not work.
Unlike the wiring to the back of the truck there are a lot of wires to inspect, so is it better to get new gauges (where do I find them) and work from there?
The wires have power at the back of the instrument cluster and I cleaned the posts and fittings but no luck. Does that mean the sending units are bad? I just would like to know the best place to start.
Unlike the wiring to the back of the truck there are a lot of wires to inspect, so is it better to get new gauges (where do I find them) and work from there?
The wires have power at the back of the instrument cluster and I cleaned the posts and fittings but no luck. Does that mean the sending units are bad? I just would like to know the best place to start.
In other words, the needles can move up and down on their own.
The original ICVR's can be reset by tripping the regulator thru a hole in it by use of a straight pin. The later replacement ICVR's cannot be reset.
When the ICVR gives up the ghost, neither of these two gauges will work. The ICVR is mounted on the back side of the instrument cluster.
B9MZ10804C .. ICVR (Motorcraft GR508) / Obsolete
Fits: 1961/66 F100/1100 / 1966/77 Bronco / 1959/66 Galaxie/T-Bird / 1960/65 Falcon/Comet / 1962/65 Fairlane / 1965/66 Mustang.
Autoparts stores carry this part, but make sure to take the old one with you.
Even though there is only this one for 1961/66, there are at least 12 others that fit 1957/58 & 1967/87 cars / 1957/60 & 1967/87 trucks.
The mounting flanges and the wire hookups will not be the same.
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