HELP! it won't Go!!

[pjlhat]

After a complete rebuild of my 300TDI and overhaul of the GB and TC it won't start:mad: The problem is that although the wire going to the fuel cut off solenoid is showing 12+volts it will not activate the solenoid:angel: If I hot wire the solenoid it clicks in and it starts:o and it purrs beautifully:)
Any suggestions would be greatly appreciated. Peter

[87County]

G'day Pete - we're talking about a 130 manual or a Disco with an alarm?

If the former...

You write that hot wiring the fuel cut-off is ok -

so if I understand that correctly the activation from the ignition isn't happening....

Does it have an alarm / immobiliser ?

Does the cut-off wire light up a 12v bulb when the ignition is turned ON ?

if not you may have accidently grounded it when live and killed a fuse

[pjlhat]

G'day Pete - we're talking about a 130 manual or a Disco with an alarm?

If the former...

You write that hot wiring the fuel cut-off is ok -

so if I understand that correctly the activation from the ignition isn't happening....

Does it have an alarm / immobiliser ?

Does the cut-off wire light up a 12v bulb when the ignition is turned ON ?




Yes 130 Manual and No it has neither alarm or immobiser and the wire will not power a 12v bulb?? So will start following the wiring back for some problem. Thanks Peter

[rick130]

Yes 130 Manual and No it has neither alarm or immobiser and the wire will not power a 12v bulb?? So will start following the wiring back for some problem. Thanks Peter

Aah, a bad contact/connection/switch somewhere, it won't let current flow Pete but just makes a connection.

I've had this a number of times over the years on motor start relay contacts.

Your meter registers full voltage, but as soon as you apply a load (motor, solenoid coil, etc) it won't work as the faulty/burnt out contact won't support the full current draw.

[pjlhat]

Thanks Rick, Went on another thorough search of the wiring and found an embarrassing thing the solenoid wire was tucked away and the oil pressure wire was connected instead :wasntme: must have been!!!
Alls well now:) Peter