This is topic fuel gauge help plzzz in forum Tech Talk at Northern California Ford Owners  .


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Posted by gercolla1 (Member # 3068) on :
 
This has kinda slowly been happening over the past few months, but I hardly drove it then. Now that I am back in this car, as soon as the engine is running the fuel gauge goes straight to the red/empty and stays. I put $20 to try and jar things up in there, but no good, still the same. So, I swap out the in tank sending unit and its still the same. What does this car want?
 

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Posted by blind (Member # 3052) on :
 
if you changed the sending unit that means its either going to be the guage or the wiring to the guage from the sender
 

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Posted by gercolla1 (Member # 3068) on :
 
Ok,gonna swap out the gauge since I gots another. But, if that ain't it, what could be the problem with the wire(s)? Are there relays,fuses or resistors along the way somewhere?
 

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Posted by evintho (Member # 5536) on :
 
Pretty common problem in Fox bodied Mustangs. Your IVR (Integrated Voltage Regulator) has decided to take a dump! It's a small square circuit board mounted behind the dash on the main board. You need to pull the gauge panel to replace it. Now here's the good news. Ford discontinued this part ages ago! It gets better, NOBODY makes a replacement! Only way to get it is to scrounge the junkyards and pull dashes until you find one that works! On the plus side.........it is small enough to fit in your pocket!
 

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Posted by gercolla1 (Member # 3068) on :
 

quote:

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Originally posted by evintho:
Pretty common problem in Fox bodied Mustangs. Your IVR (Integrated Voltage Regulator) has decided to take a dump! It's a small square circuit board mounted behind the dash on the main board. You need to pull the gauge panel to replace it. Now here's the good news. Ford discontinued this part ages ago! It gets better, NOBODY makes a replacement! Only way to get it is to scrounge the junkyards and pull dashes until you find one that works! On the plus side.........it is small enough to fit in your pocket!

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