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1hz cranks but wont start

Posted: Sun May 04, 2008 6:19 pm
by BBW
Can anyone help?
My 1991 HZJ75 with a 4.2 Diesel just stopped dead on the weekend and now cranks but will not start.

The dash lights that usually come on with ignition for the glow plugs, timing belt warning and the air filter restion indicator do not come on however I can not find any blown fuses.

Also the stop solenoid (well I think it is) that is mounted on the inside of the fuel pump facing the head (two wires in both blue) appears to be open circuit.
I am chasing a wiring diagram, so I can sort out specificly the circuit that supplies the fuel pump stop solenoid, glow plugs, filter sender and timing belt warning light. I want to know if it's a common circuit.


cheers

BBW

Posted: Sun May 04, 2008 7:46 pm
by mule75
can you try to power up the solenoid in the inj pump to see if that makes a difference?

Posted: Mon May 05, 2008 6:58 am
by dow50r
Check the fuseable links for continuity at the battery possitive.

Re: 1hz cranks but wont start

Posted: Mon May 05, 2008 9:29 am
by hdj105
BBW wrote: Also the stop solenoid (well I think it is) that is mounted on the inside of the fuel pump facing the head (two wires in both blue) appears to be open circuit.
I am chasing a wiring diagram, so I can sort out specificly the circuit that supplies the fuel pump stop solenoid, glow plugs, filter sender and timing belt warning light. I want to know if it's a common circuit.
The stop solenoid only has one wire, and is at the top rear of the pump in the distributive head. The 2 wire thing you mention is the tacho sender.

I think the circuit you need is the gauge fuse.

Posted: Tue May 06, 2008 8:55 am
by Dzltec
Try your fusible links at the battery.



Andy

Posted: Tue May 06, 2008 9:57 am
by Moose45
I was with my mate when this happened, the fusible link had burnt/melted.
Which as yet we cant find a reason for.
We tried to bypass it and also replace it, but still could not get any power
to the glow plug/ filter lights on the dash, which we assume the stop soliniod on the pump is on the same circuit?

Is there a seperate fuse or relay that this might run through?
No fuses have blown in the R/H kick panel.

Any help appreciated.