diesel sender

[carl]

Does anyone know if the sender mechanism circuit board is the ame on dual and single pump cars ? and if the circuit board is the same on both sides ?

Im getting open circuit on the pump sidde sender , ive changed the arm contacts and still the same so now planning on changing the little track board

anyone any ides what else could cause the guage to so no fuel ?

[T-Cut]

Logically, I'd say all the rheostat boards are all the same, but I haven't checked.
Have you shown that the circuit is broken somewhere between each end of the resistance windings?

TC

[carl]

ive poked a meter across the plug terminals and its is open circuit between the rear most pair of pins - am i correct in thinking this is the driverrs side (pump ) sender

te board looks the same from the petrol one i have

[carl]

this is what i et on the IPK test

[T-Cut]

Originally Posted by carl

ive poked a meter across the plug terminals and its is open circuit between the rear most pair of pins - am i correct in thinking this is the driverrs side (pump ) sender

An open circuit on pins 6-3 doesn't specifically identify where the fault lies. I'd suggest putting the meter across the actual resistors. Then you'll know if you should swap the rheostat board or look elsewhere. Maybe a wire's dropped off somewhere?

TC

[carl]

its slightly confusing as my plug runs front bacck not across the car - ive tested where the wires join to the board on the pump uit and its open circuit there - that lead me to thnk the contacts had fallen off so i changed them - the old ones look no different to the ones i had spare


I have a rehostat board from a petrol car im just going to test with a meter - its just getting that out the plastic , the diesel one i had shattered trying to get it out as there quite brittle

will it do any harm truning the ignition on with the pump out the tank partly - just its a pain putting it back in each time

[T-Cut]

Originally Posted by carl

its slightly confusing as my plug runs front back not across the car

That sounds rather odd. Is the float arm oriented front to back or side to side?

will it do any harm turning the ignition on with the pump partly out the tank - just its a pain putting it back in each time

I'd never recommend applying power into an open fuel tank, petrol or diesel. I suppose the chances of diesel vapour ignition are low, but they aren't zero. But I'll leave that up to you.

TC

[carl]

i cant remember whic way the float arm runs ill look in the morning - looking directly from above the plug is towards the mddle of the car (9 oclock) the diesel out put is 2 oclock , the return anout 4 oclock

the locator tab on the pump about 6 oclock - its a MK2 single pump car if that makes any difference

[T-Cut]

Originally Posted by carl

- looking directly from above the plug is towards the mddle of the car

So does the connector sit as shown in the diagram or at 90° to the diagram?

TC

[carl]

Originally Posted by T-Cut

So does the connector sit as shown in the diagram or at 90° to the diagram?

TC

at 90 degrees - the clip slides toward the front of the car to remove it