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Fuel Computer Data Error


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#1 josh7195

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Posted 08 July 2014 - 09:04 PM

Hi im new to the forum was wondering if anybody has had a fuel computer data error my fuel light always stays on even when I fill up and the gage stays at empty any ideas?

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#2 jeebowhite

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Posted 08 July 2014 - 09:14 PM

Sounds like a seized Fuel Sender Unit.

 

Drive the car over rough terrain see if you can shake it loose.

 

When the car starts, does it move the guage or does it remain at 0%



#3 josh7195

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Posted 09 July 2014 - 06:53 AM

Thanks for the reply jeebowhite the problem started about 8 months ago and it would be all over the place and now it stays at 0 and always says I have 31 miles left. I have driven over a lot of rough terane over the last months and dont think it will fix it self , do you know how much it costs to get the fuel sender unit fixed?

#4 jeebowhite

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Posted 09 July 2014 - 08:32 AM

to be honest your looking at a replacement.

 

In most circumstances, your biggest nightmare is going to be the draining and dropping of the fuel tank to get access. you oculd be looking at about 2.5 hours of labour as well as the part (say around £70 at a guess?).

 

It really depends though if you want to go to Ford or not will define the cost. Alternatively, the issue could be a wiring fault, say a broken wire between the FSU and the instrument cluster.



#5 AdeMk1

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Posted 09 July 2014 - 08:48 AM

Have you tried the gauge sweep test to rule out a problem with the instrument cluster? (Hold down trip mileage button while turning key to position II).

#6 josh7195

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Posted 09 July 2014 - 09:26 AM

I will most likely get it replaced as I just tried the guage sweep test ( wich I didn't know about before so thanks lol) I wasn't sure what to look out for but it made the gauges move but then when I started the car up again still on empty and 31 miles to go....thanks for the help guys

#7 jeebowhite

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Posted 09 July 2014 - 10:24 AM

In which case the replacement or at least an inspection of the wiring is due! hopefully it wont be too expensive.

 

Are there any error codes relating to the FSU, if there is an error it may suggest towards the idea of a bad connection on the unit, otherwise if there is nothing it would probably indicate a bad FSU



#8 AdeMk1

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Posted 09 July 2014 - 10:25 AM

It just makes the gauges do their full sweep to test there are no faults with the gauges & warning lights.
If the petrol gauge did its full sweep then the fault will most likely be with the sender unit in the tank as mentioned before.
Get more than one quote though as prices between garages can vary quite a lot.

#9 josh7195

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Posted 10 July 2014 - 06:11 PM

Nice one guys


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