Manitout MLT526 Fuel Gauge

[topcat2006]

I've got a fuel guage that reads zero.
I've checked the sender - the float is whole and floating. The unit sends out a resistant from 0 to several hundred ohms.

I've put a new guage in and it's still at zero.

Is there anything else I should check?

Does anyone have some wiring diagrams I can use to faultfind?

Thanks

Tom

 

[ACEngineering]

I've got a fuel guage that reads zero.
I've checked the sender - the float is whole and floating. The unit sends out a resistant from 0 to several hundred ohms.

I've put a new guage in and it's still at zero.

Is there anything else I should check?

Does anyone have some wiring diagrams I can use to faultfind?

Thanks

Tom

Will be the sender unit. Theres a few types depending on serial number. I probably got one in stock.

 

[ACEngineering]

Short the wire on sender to earth. Gauge should go beyond max.
If it dont then you have a break in wire but unlikely imo.

 

[topcat2006]

Short the wire on sender to earth. Gauge should go beyond max.
If it dont then you have a break in wire but unlikely imo.

Tried that - and gauge didn't move, so I assumed (there's the problem) that the guage was at fault.

Where do the wires normally break?

Tom

 

[topcat2006]

Will be the sender unit. Theres a few types depending on serial number. I probably got one in stock.

What should the sender read? I'm getting a moving ohm value from zero to a max ohms (which I can't remember).

 

[ACEngineering]

Tried that - and gauge didn't move, so I assumed (there's the problem) that the guage was at fault.

Where do the wires normally break?

Tom

Dont know never had one break wires before and theres no multi plugs for it other than maybe 1 under the dash.

 

[ACEngineering]

What should the sender read? I'm getting a moving ohm value from zero to a max ohms (which I can't remember).

No idea never bothered to measure one. And I doubt it's in any manitou repair manual or at least not that I noticed.

 

[ACEngineering]

Try shorting the wire to earth again but make sure ignition is on.

 

[topcat2006]

Try shorting the wire to earth again but make sure ignition is on.

Yep didn't work again.

For some reason I decided to tug the wire.... It came out (about a meter worth). Now I need to trace that conduit back to the other end. Any ideas on route?

Thanks

Tom

 

[ACEngineering]

Yep didn't work again.

For some reason I decided to tug the wire.... It came out (about a meter worth). Now I need to trace that conduit back to the other end. Any ideas on route?

Thanks

Tom

be behind the panel on side of cab somewhere. it loops under the chassis and back out cab side.

 

[topcat2006]

be behind the panel on side of cab somewhere. it loops under the chassis and back out cab side.

That's Mondays job... Thank you for your help, much appreciated.

 

[jamc]

ours stopped serval years ago soon learn to check fuel level

 

[topcat2006]

ours stopped serval years ago soon learn to check fuel level

This one hasn't been working for a few years so very used to dipping it. Got a few bits and pieces of spare time and I like a challenge....

 

[jamc]

my challenge was the price I was quoted for new sender

 

[glasshouse]

I've got a fuel guage that reads zero.
I've checked the sender - the float is whole and floating. The unit sends out a resistant from 0 to several hundred ohms.

I've put a new guage in and it's still at zero.

Is there anything else I should check?

Does anyone have some wiring diagrams I can use to faultfind?

Thanks

Tom

Put some fuel in?