Thread: TD5 -Non Starter after overheat.

It won't shut down because of overheated fuel, it also won't shut down because of no coolant.

It could definitely seize because of no coolant.

Diesel in the oil is usually injector O rings but could be a cracked head.

The only sensor that will stop it running is the CPS.

If it has diesel in the oil it's possible it also has air in the fuel rail in the head... It won't start if this is the case.

You can initiate a purge cycle by pumping the throttle 7 times with the ignition on so that the dash lights are on... If you can hear funny noises at the fuel pump or at the head, it most likely has air in the system.

If you can't hear the fuel pump, it also won't start.

Originally Posted by shack

It won't shut down because of overheated fuel, it also won't shut down because of no coolant.

It could definitely seize because of no coolant.

Diesel in the oil is usually injector O rings but could be a cracked head.

The only sensor that will stop it running is the CPS.

If it has diesel in the oil it's possible it also has air in the fuel rail in the head... It won't start if this is the case.

You can initiate a purge cycle by pumping the throttle 7 times with the ignition on so that the dash lights are on... If you can hear funny noises at the fuel pump or at the head, it most likely has air in the system.

If you can't hear the fuel pump, it also won't start.

What he said... except I thought purge only required 5 pumps.

I usually default to the CPS as a good place to start, but I thought it triggered the MIL, so is that lit up?

You've bought a non runner, so it's best not to assume that what you have been told is correct and just start at basics, otherwise you get lost down rabbit holes.

Thanks for the replies,
The seller said he put a new fuel pump in- I can hear it running. but as Tins says, sellers can be a little short on truth, however he did fit a new fuel pressure reg module.
I did try the purging- no luck. I just realised I have a Nanocom for a defender TD5, so I'll try it. Stay tuned.
It cranks nicely, I would assume, even with a dodgy head or blown head gasket it would at least try to kick over?

Nanocom will be fine for the engine. I wasn’t trying to dis the seller but he could misremember.
Yes the engine should at least try. Is the MIL lit?

With a new fuel pump and fpr might as well do injector seals and o rings and new harness and see if she goes

I ran the Nanocom through & these are the ones that Google doesn't explain much.

Fuel temperature circuit - (current)
EGR Vacuum modulator short circuit (intermittent)
EGR Valve stuck open (current)
Injectors 2,3,5 open circuit (current)

Are any of these the non start cause?
Thanks, David

Originally Posted by DeeJay

I ran the Nanocom through & these are the ones that Google doesn't explain much.

Fuel temperature circuit - (current)
EGR Vacuum modulator short circuit (intermittent)
EGR Valve stuck open (current)
Injectors 2,3,5 open circuit (current)

Are any of these the non start cause?
Thanks, David

Injectors open circuit-current will stop it

Originally Posted by DeeJay

It cranks nicely, I would assume, even with a dodgy head or blown head gasket it would at least try to kick over?

Can you clarify? Are you saying it won't kick over or it won't start?

If it won't kick over it certainly won't start!

If that's the case investigate the starter or BCU.

If it does kick over then it's not that (could still be immobilised though).

If it does kick over but won't fire, investigate the injector open circuit, could be oil in the ECU plug.