My fuel gauge is not working but I looked at the wires goin to it are just thrown together want see if anyone knows what wire colors are and if the 87 bronco had a in line or in tank pump right I know I have in line just trying to get the gauge working would like to know what ohms it's supposed to be at for full/empty thanks fellas
Fuel gauge
- Thread starter Mas4547
- Start date
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yo MAS,
Wiring Diagram in an 87
Source: by Vincent C @ http://web.archive.org/web/20110919010613/http://autorepair.about.com/library/illustrations/bl402lib.htm
Testing in an 78-86; "...Ground the Y/Wh wire at the fuel tank, turn the key to RUN, and observe the gauge. If it pegs FULL, the sender is bad inside the tank. If it stays at EMPTY, it's an electrical fault, probably in the cluster, or its connector..."
Source: by Steve
Testing in 87-96; Fuel Gauge Moves from E to below E; "...Disconnect the connector at the fuel tank, ground the yellow with white tracer wire (make sure you have a good ground),turn the key on-if the gauge goes to empty, chances are, the fuel sender is the problem. If the gauge doesn't move, then recheck the grounding of the Y/W wire, if it is good then the problem is is forward of the sender (wiring/connectors/instrument cluster)..." Miesk5 Note, Steve wrote, Pre-'87 fuel level senders are TOTALLY different from '87-up. Not only do they work over a different range; they work in the opposite direction
Source: by 85bigbronco
Tech Tip Guide, General; "...Many times, the Ford fuel pump hanger/sender assemblies are frequently found with extensive corrosion on the cover and on the metal tubes. Over time, the terminals can loosen and cause intermittent loss of continuity. Erratic reading of the fuel sender level is one of the other problems that could occur..."
Source: by spectrapremium
Fuel Gauge Erratic TSB 88-18-03 87-88 Bronco & F Series 4.9L/5.0L (all PN E9VY-9275-A) & many others
Source: by Ford via Steve
http://www.supermotors.net/registry/media/724794
Testing; "...the little resistive strip in them gets bad and causes erratic readings. Also, while you are at replacing it, check out the connector to make sure the ground is good back to the battery. Do a resistance check from the black lead to the battery (-) post. If is is more than a couple of ohms, run a new ground lead to it..."
Source: by Seabronc (Rosie, Fred W) at Ford Bronco Zone Forums
Testing; "...In 87 Ford changed the resistance values for the fuel gauge..."
Source: by Clarko
Testing; "...floats either way; There is a brass float attached to the sending unit, and eventually they can develop a pin hole leak.."
Source: by Dave's Bronc
87 resistance is; 16 - 158 ohms (empty-full)..."
Source: by Aikidoka
Wiring Diagram in an 87
Source: by Vincent C @ http://web.archive.org/web/20110919010613/http://autorepair.about.com/library/illustrations/bl402lib.htm
Testing in an 78-86; "...Ground the Y/Wh wire at the fuel tank, turn the key to RUN, and observe the gauge. If it pegs FULL, the sender is bad inside the tank. If it stays at EMPTY, it's an electrical fault, probably in the cluster, or its connector..."
Source: by Steve
Testing in 87-96; Fuel Gauge Moves from E to below E; "...Disconnect the connector at the fuel tank, ground the yellow with white tracer wire (make sure you have a good ground),turn the key on-if the gauge goes to empty, chances are, the fuel sender is the problem. If the gauge doesn't move, then recheck the grounding of the Y/W wire, if it is good then the problem is is forward of the sender (wiring/connectors/instrument cluster)..." Miesk5 Note, Steve wrote, Pre-'87 fuel level senders are TOTALLY different from '87-up. Not only do they work over a different range; they work in the opposite direction
Source: by 85bigbronco
Tech Tip Guide, General; "...Many times, the Ford fuel pump hanger/sender assemblies are frequently found with extensive corrosion on the cover and on the metal tubes. Over time, the terminals can loosen and cause intermittent loss of continuity. Erratic reading of the fuel sender level is one of the other problems that could occur..."
Source: by spectrapremium
Fuel Gauge Erratic TSB 88-18-03 87-88 Bronco & F Series 4.9L/5.0L (all PN E9VY-9275-A) & many others
Source: by Ford via Steve
http://www.supermotors.net/registry/media/724794
Testing; "...the little resistive strip in them gets bad and causes erratic readings. Also, while you are at replacing it, check out the connector to make sure the ground is good back to the battery. Do a resistance check from the black lead to the battery (-) post. If is is more than a couple of ohms, run a new ground lead to it..."
Source: by Seabronc (Rosie, Fred W) at Ford Bronco Zone Forums
Testing; "...In 87 Ford changed the resistance values for the fuel gauge..."
Source: by Clarko
Testing; "...floats either way; There is a brass float attached to the sending unit, and eventually they can develop a pin hole leak.."
Source: by Dave's Bronc
87 resistance is; 16 - 158 ohms (empty-full)..."
Source: by Aikidoka
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