FUEL GAUGE DON"T WORK
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Joined: Jan 2002
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From: USA
FUEL GAUGE DON"T WORK
ok i got this 79 ford F150 ranger given to me today it runs great. but the problem is the guy told me that the fuel gauge worked until he had the new exhaust put on where would the wire for the guage be located please help thanks
New User
Joined: Jan 2008
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Likes: 24
FUEL GAUGE DON"T WORK
[updated:LAST EDITED ON 09-Jan-02 AT 00:52 AM (EST)]The power from the Fuel and Temp gauges is gained from the
Instrument cluster Voltage regulator which is attached to the back of the Instrument cluster.
Go to the temperature sender and with a test light and the key in the ON position check for PULSE current.
If there is pulse current ,the VR is working.
NOW, Go to where the fuel sending unit is mounted to the fuel tank and check the connection there for a PULSE current.
If there isn't a Pulse current ,there is a wiring problem.
To check if the gauge is working close the circuit of the fuel wiring with 12V *NOTE: Make sure you have a helper to avoid the 12V being hooked up TOO LONG. The fuel gauge should be PINNED.
Clean up the connection to the sending unit or replace it if cleaning doesn't work.
Also,If the gauge doesn't pin to max> The gauge is bad.
Dennis
Oh....Please Don't Ask Me Any Tough Questions As:
"I'm Saving Up MY Memory For When I Develop Alzheimer's"
78 F-150 429CJ C6 ,Silver w/Explorer Pkge
641/2 Mustang,Pre-World's Fair Car #8092
64 Fairlane S/C waiting for a 390-4spd.
68-Mustang.Sunlit Gold 80,000 miles
Instrument cluster Voltage regulator which is attached to the back of the Instrument cluster.
Go to the temperature sender and with a test light and the key in the ON position check for PULSE current.
If there is pulse current ,the VR is working.
NOW, Go to where the fuel sending unit is mounted to the fuel tank and check the connection there for a PULSE current.
If there isn't a Pulse current ,there is a wiring problem.
To check if the gauge is working close the circuit of the fuel wiring with 12V *NOTE: Make sure you have a helper to avoid the 12V being hooked up TOO LONG. The fuel gauge should be PINNED.
Clean up the connection to the sending unit or replace it if cleaning doesn't work.
Also,If the gauge doesn't pin to max> The gauge is bad.
Dennis
Oh....Please Don't Ask Me Any Tough Questions As:
"I'm Saving Up MY Memory For When I Develop Alzheimer's"
78 F-150 429CJ C6 ,Silver w/Explorer Pkge
641/2 Mustang,Pre-World's Fair Car #8092
64 Fairlane S/C waiting for a 390-4spd.
68-Mustang.Sunlit Gold 80,000 miles
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