HELP - Disco 2 Td5 cranking but not starting - Fixed?

This site contains affiliate links for which LandyZone may be compensated if you make a purchase.
unplug the ECU red plug(disconnect battery first), insert probes of multimeter set on ohms into cavities 13 and 36 and jiggle the wiring starting from the sensor untill you can reach... if you see big variations eventually open circuit then that's the problem

Red plug ECM.JPG
 
cheers will try that. The bugger has started the whole day but... the MIL came on "(15.2) high speed crank (logged)"
I located the crank sensor under the sound insulation. Very hard to reach because of that but I am able to just about jiggle the wires.
 
sierrafery said:
yes, corroborated with the "tired" injector harness which you should change too, ASAP... just make sure that the crank sensor's plug/wiring is OK cos the contacts in the plug used to loosen due to the 'unfriendly' environment...that's why these kits are well sold: http://www.ebay.co.uk/itm/landrover...-kit-discovery-td5-defender-td5-/251316693883
Click to expand...

Cheers. I will replace that wiring as it is awkward to reach thanks to the sound proving. I will replace the harness as well as the engine was running brilliantly before all this happened.
 
Finally refused to start, only once. After that it started again. I managed to take the engine speed while it didn't start under instruments it gave engine speed 0.
The cylinder balance while running:
1 = -3
2 = -13
3 = -8
4 = 18
5 = 6

We tried to get a measurement out of the red connector (pin 36 and 13) we measured no connection at all (will try this again with wire instead of paperclips tomorrow)
 
rough balance, but it could be due to the harness, instrument mode might not be the most accurate in this area, next time check in ''INPUTS FUELING'' though the crank sensor is hardwired to the ECM so you must get resistance reading in those pins
 
sierrafery said:
rough balance, but it could be due to the harness, instrument mode might not be the most accurate in this area, next time check in ''INPUTS FUELING'' though the crank sensor is hardwired to the ECM so you must get resistance reading in those pins
Click to expand...

Previous measurements of engine speed were from "INPUTS FUELING" only this time not. I will use something else to put in the wires, I think I didn't get them properly.
 
Just as an update while I wait for parts, car has started every time since I ordered the parts. It is like going to the dentist because your tooth hurts and it stops hurting the moment you booked your appointment. LOL
 
sierrafery said:
o_O classic case of intermittent crank sensor/circuit failure imo, especially that you've got thar high speed crank code at the end.
Click to expand...

I have ordered a new sensor, connector and harness. I hope to have them for the weekend so I can put them in.
I will report back when it is done.

Thanks again!!
 
the crank sensor when it starts to fail it becomes sensitive to heat so if after a longer drive it refuses to start cool it with some water, dry it with a towel and try then... if it starts then that's it
 
You must log in or register to reply here.

Similar threads

Sophia casper
Disco 2 Disco 2 td5 cranks but wont start.
2
Replies
39
Views
3K
Alan Henry Crossley
A
L
Help - Disco 1 cranking but not running
Replies
0
Views
494
LBell
L
A
Sporadic Won't start and No Cranking
2
Replies
22
Views
1K
ANR
A
T
Disco 2 03 Discovery 2 TD5 no start
Replies
8
Views
564
Anaconda
A
Chema Disco v8
Disco 2 Disco 2 V8 All doors but drivers locked but immobilizer working and car starting.
2 3
Replies
51
Views
3K
Chema Disco v8
Chema Disco v8
Back
Top