Fuel tank sender unit

Technical questions and answers about the Mazda Bongo

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Bongo Bonkers
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Fuel tank sender unit

Post by Bongo Bonkers » Wed Jan 09, 2013 8:13 am

Is the sender unit mounted on the top of the tank and will this require dropping the tank to change it the unit out as i am getting funny indications on a true level,or could this be some other problem?
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westonwarrior
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Re: Fuel tank sender unit

Post by westonwarrior » Wed Jan 09, 2013 8:52 am

Earth problem its a common fault

rushing out or would give better instructions but some one will be along
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Simon Jones
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Re: Fuel tank sender unit

Post by Simon Jones » Wed Jan 09, 2013 9:36 am

Bongo Bonkers
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Re: Fuel tank sender unit

Post by Bongo Bonkers » Wed Jan 09, 2013 10:24 am

Thank's guys but i am unable to open the the link provided, can someone confirm that the unit is mounted on the top of the tank and can you gain access within the car or is it a case of reaching over the tank or removal of it?
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Re: Fuel tank sender unit

Post by 321Away » Wed Jan 09, 2013 10:28 am

you dont have to do either, just ground the tank, usually run self tapper through the lip of the tank and connect it to the chasis, theres a nice 10mm nut that holds hoses in place just behind offside pillar.
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Re: Fuel tank sender unit

Post by Diplomat » Wed Jan 09, 2013 10:50 am

This problem has recently reared its ugly head with my Bongo, it must be the age and the time of year.

For the moment, I am living with it. Jobs like this can wait until Spring. I know the tank is fairly full because it doesn't take much to brim it.

Until I just read Julian's post, I was congratulating myself on having uncluttered access to the panel in the floor but now it seems that, unless something else is wrong, a diagnosis/cure can be effected from underneath the van. I shall start by finding a test lead with a croc clip on each end.

Might even see if I can use one of my battery jumper leads just to see if that brings the gauge back to normal.


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Re: Fuel tank sender unit

Post by briwy » Wed Jan 09, 2013 11:21 am

321Away wrote:you dont have to do either, just ground the tank, usually run self tapper through the lip of the tank and connect it to the chasis, theres a nice 10mm nut that holds hoses in place just behind offside pillar.
Julian
As Julian says, dead easy. Make sure the steel is clean and solder the connectors on. Check it works and cover with waxoyl or similar

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Bongo Bonkers
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Re: Fuel tank sender unit

Post by Bongo Bonkers » Wed Jan 09, 2013 10:20 pm

Well that didn't take long to fix Cheers guys for all the help. =D>
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westonwarrior
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Re: Fuel tank sender unit

Post by westonwarrior » Wed Jan 09, 2013 11:07 pm

Great that its done, the forum and its combined experience save a lot of time and hassle again
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dblake
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Re: Fuel tank sender unit

Post by dblake » Tue Feb 05, 2013 2:14 pm

Sorry to hijack this tread but I need to do the same procedure on my van at the weekend (fingers crossed it's as simple a solution as this one). Looking to buy some ring terminals off eBay for making up the wire while at work but without getting under the van I'm unsure as to what size to get - any recommendations?
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Re: Fuel tank sender unit

Post by g8dhe » Tue Feb 05, 2013 3:51 pm

Use the size that fits the bolts your going to use!
Without the bolt size you might get an an eye in the ring that is to small to fit the bolt, or conversely too large and it comes of the head of the bolt...
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Simon Jones
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Re: Fuel tank sender unit

Post by Simon Jones » Tue Feb 05, 2013 7:17 pm

You can get a kit of various crimps & eyelets for a few pounds, but a really cheap kit may not do a great job of making a secure connection:

http://www.tool-net.co.uk/p-365731/sealey-s0536.html

Personally, I always apply a dob of solder afterwards to ensure it's electrically as well as mechanically sound.
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