[Lr defender 2001 crank but not start]

9 hours ago, RedLineMike said:

yes,

when the starter breaks down internally it causes elecro magnetic interferance (EMF), ive had it on my own defender plus several others on customers, if you can get it plugged in the fault code for noisy crank signal is the indication that the starter is causing interferance 

Ok noted thanks. The only way to test that is to change the starter? Or can i push the car to test it first?

[Defender TD5 (2001 - 15p) Wont Start]

On 4/26/2021 at 3:50 AM, Mark Monkey said:

So – it’s been a ‘fun’ afternoon of diagnostics (at least it was sunny)

 

1^st – Battery was charged, showing ~13v when disconnected, and when cranking still shows ~11v, so its getting enough power (it’s a BIG 110ah battery 😊)

 

ECU plug was clean, but I removed the plug, cleaned it again with IPA, and added petroleum jelly and refitted.

I replaced the crank sensor with my replacement, and a spacer), checking the resistance before fitted (1.26ohm) and when fitted and connected via pin 13/36 on ecu (1.27ohm), so I believe the wiring is ok (it looked ok).

It’s cranking, showed around ~290 on crank sensor (friend observed it) from the Nanocom, but wouldn’t fire.

 

Its had a new fuel header inc. connectors and valve – and a new fuel filter a few weeks ago, and was starting fine after it, so I didn’t look there.

Purged the pump – I can hear the pump humming but no gurgling sounds or anything. Pump is receiving 12v on its live post relay.

So checked for pressure. Disconnected the HP feed which goes from the pump (to the HP input of the fuel regulator (green collar) and there is no pressure, barely a dribble when cranking.

 

I don’t have a multi-meter that will go above 10amp, so can’t test it inline using the 20a fuse (found here)

 

I’m not sure how the fuel pump/filter work. It seems to go via the filter via a LP pipe to filter the fuel, and then goes to the fuel pressure regulator (Pipe 8 on diagram). Its here I’m seeing no pressure.

 

a.       Fuel Pump? Do I need to buy a new multi-meter, or is there another way of testing whether the pump itself is working?

b.       Could the valve from the fuel pump to the fuel filter via the distribution head be faulty, or blocked – should I crack it and see if fuel is coming out? (Pipe 7 on diagram)

c.       Anything else??

 

TIA.

Do you found a solution? I have to found why my defender td5 crank but not start…that’s why i was following your tread.

[Lr defender 2001 crank but not start]

3 hours ago, monkie said:

I have no experience with Td5 engines so I can't offer any detailed trouble shooting with ECU and sensor faults. I can however suggest you tackle the simple issues first by trying what the LR technician told you before you move on to other things.

• Make sure your battery is in a good state of charge.
• Check the terminal connections to the battery are clean and secure.
• Take a thick jump lead and connect it to somewhere on the engine block near the starter motor and the other end directly to the negative battery terminal. If your issue is a broken earth - this will bypass the earth. If your engine now cranks over with the jump lead in place you need to find the broken earth strap and replace it.
• If these simple checks don't work, someone will be along with Td5 experience

Will check that. Thanks

[Lr defender 2001 crank but not start]

3 hours ago, RedLineMike said:

id suggest changing the starter motor itself as they can cause EMF interferance with the crank signal,

My car crank but don’t start, you think that starter motor can still be faulty even if it crank correctly?

[Lr defender 2001 crank but not start]

Forgot to mention that is a TD5

 

[Lr defender 2001 crank but not start]

Hi all,

I’m new to the world of Land Rover, and i buy a old defender of 2001. The car crank but not start.

It happen to the last owner as it stop to the supermarket and after not restart.

Fuel pump on the gaz tank have been changed.

Filter is new

Older owner try to swap the écu without success.

Glow spark are new

Pressure pump is new

The écu have no error on last diag.

 

Do you have any ideas to solve this.

I saw that there is problems with crankshaft position sensor default and injector seal. Do you think that it can be the probleme?

A LR technician tell us that it can be fault negative or ground issue.

Thanks for those who will take the time to help me.

Regards