Td5 non starter

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bushcraft4u

Member
Posts
14
Location
scarborough uk
Hi guys.hope everyone is as well as expected.Im know there is loads of threads regarding this topic to which I have scanned many times. I have my defender 110 ,td5 , it did have a starting issue at times just not catching but turning over lovely, so I rebuild the starter.it spins over great.there is sufficient juice in the new heavy duty battery . Even when cranking there is still good residual charge. the snap on versus pro says noisy crank signal and live data shows no rpm only now and then show maybe 60 rpm for a second. have changed the crank sensor With 3 replacements all new . The wire to c/s wasn’t great so I’ve replaced the terminal and wire with brand new twisted and shielded cable back to loom where it enters ecu. All soldered and correct .I previously went down the fuel path.changed filters in filter housing . Im getting over 4 bar at fuel reg. Pump is in good order had scope on it.it runs prime cycle good. Tested all relays., did get it started by towing although reluctantly. And if I start with easy start it again reluctantly starts and will run loverly.Rev nicely And I can leave it like that for ages 20 minutes plus. And while running the live data shows rpm as it should be even when accelerating.sweet as a sewing machine. if even put a shim on c/s ..measured down the crank sensor aperture in ten places to check sensor depth to fly wheel .all good.. even made a small faraday cage to wrap around sensor to prevent interference.crazy I know !,turn it off and NOTHING.back to no rpm on diagnostics while cranking and no starting. now I’m at the point where I’m thinking of getting ecu tested. Could anyone suggestWhere I might get it tested...Any more pointers would be greatly appreciated..thank you. By the way 8 weeks on and off trying stuff.
 
Yes bud as stated 4 plus bar at reg. I’m 99 present certain not fuel.more inclined to chase the fact that there’s no rpm showing on live data when cranking .
 
I’ve just ordered a starter even though I repaired the one that’s on now with solenoid kit , as I saw a post stating it can be the windings of starter causing interference through wires not the solenoid itself. The problem only got bad after I replaced starter components , even though it spins great.
 
Hi sierrafery, already tried and it did start reluctantly. Thought it would have started easier than it did. Whenever I’ve got it running either with easy start or bumping and it runs great and engine sounds fine and responsive on pedal .then I connect diagnostics up while running and it shows rpm and all other data looks fine.leave it to run as long as you like then shut off and back to problem . crankIng fast but not catching and showing no rpm on data apart from odd 60 rpm value
 
As long as you dont get above 260 rpm while cranking it will not start so the problem is on that path, you said you replaced the wiring to the CPS, did you change the connector too ?
 
As long as you dont get above 260 rpm while cranking it will not start so the problem is on that path, you said you replaced the wiring to the CPS, did you change the connector too ?
Yes I changed terminal to c/s . Shielded and twisted new cable .triple checked ohms from sensor 1.23 ohms . Checked position of cables .continuity good.i think it was one of your reply’s to another post when you stated it is the windings in the starter not the solenoid that causes the spikes to return back up the cables. That’s why I’ve ordered the new starter.cheers
 
Did you fit the new starter and still the same?
No bud. Just ordered it..put new solenoid kit in present one because of sticking plunger , cranks great now, but problems started since fitting .worked on motors most my life but this has got me. If I hadn’t seen no rpm on diagnostics data I would still be following fuel path.
 
The rpm reading has to do only with the CPS output and the flywheel's speed as long as the signal is not altered by something... happenned to me too and to others and only a new starter cured it but i've seen only one case when there was some play in the flywheel and the air gap was affected while cranking but that's too mechanical for me to understand
 
I had this on our newly bought TD5, it started but reluctantly, worse when hot.

l took it to a LR specialist and they did the injector seals which made no difference, then they tried a new diesel filter housing, and that made no difference either.
So a new battery went in, and it was still reluctant to start.
Next a new starter motor....fault cured. Started instantly hot or cold.
Even the garage were surprised. My only guess is that the starter was faulty, and although it turned the engine fine, it generated voltage spikes or other interference in the electrical system?

A couple of months later the alternator failed. Not sure if this was anything to do with the previous issues. But that’s obviously been changed as well now.
 
Cheers lightning.. Well new starter is going on today. So fingers crossed. It will be one of the strangest scenarios I've ever come across in my 51 years. Will report back to all later.
 
Well new starter in and guess what.. Fired first time.. Fantastic.. After 8 weeks of Frustration.. Many thanks to all for support and comments. Cannot emphasise enough to anyone with td5 about the need for diagnostic unit. And without saying this forum. Because without live data showing no rpm I would not have chased starter issue because it spun over great. Anyway like they say," you live and learn". . Thanks especially sierafery.
 
:cool: Welcome and well done, i had a very strong feeling that it will start with the new starter, for defenders or manual D2s this is easy to check cos if you can bump start it without cranking then that's it. :)
 
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