Gas Guage Quit Working
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Junior User
Joined: Sep 2003
Posts: 53
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Gas Guage Quit Working
I recently replaced the speedometer cable in my pickup, pulling out the complete instrument cluster. When I put everything back together my gas gauge quit working. Any thoughts? Did I plug the wiring harness into the instrument cluster backwards? Did I pull a ground wire off? Etc.?????
Lead Driver
Joined: Mar 2010
Posts: 5,250
Likes: 11
From: West Virginia
they do go bad from time to time. What you could do is use a multimeter to measure yours right on top of the tank. Its a bitch but if you slide underneath you should be able to reach it. Unfortunately I do not know the normal operating range range for one. I'd check that first though, and if it measures within acceptable range, I'd check the connections at the back of the gauge cluster next.
Lead Driver
Joined: Mar 2010
Posts: 5,250
Likes: 11
From: West Virginia
well, this is the way the world works, 3 threads below yours I found this, which links to a post where a guy explains how the gauges work and gives you the resistance the stock fuel gauge operates at: https://www.ford-trucks.com/forums/1...-clusters.html
MSEE
Joined: Apr 2004
Posts: 10,386
Likes: 35
From: Austin, TX
All wiring to the cluster (including any necessary grounds) are contained in the cluster connector itself. There are only two connections for the gas gauge: an 8.5-ohm resistor wire to power the ICVR (instrument cluster voltage regulator) which in turn powers the gauge, and the gauge "sense" that runs out to the sending unit. The ICVR also requires a ground, which is contained in the cluster connector.
It's not possible to have the connector backwards, but it is possible that it's not seated completely.
It's not possible to have the connector backwards, but it is possible that it's not seated completely.
Elder User
Joined: Feb 2009
Posts: 623
Likes: 0
From: Sweethome Or
sounds like the plug is loose, the printed circuit is boogered up, or the gas gauge itself is bad.... both the printed circuit and gauge can be swapped between clusters if there the same types...i am assuming that the new cluster is really a used one so i could be wrong..
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