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drinkdrinkdrop

Member Since: 13 Sep 2016
Location: Surrey
Posts: 76

TD5 Starting problems

I've got a progressively worsening problem starting my 2005 TD5 110. It cranks fine and once going runs fine (possibly lacking abit of top end, acceleration drops off above 70 odd) no missfires on anything like that.

Initially it would start everytime but occasionaly with a really lumpy idle just after starting, almost as if it wasn't running on all cylinders, the problem then goes away as soon as you applied any revs.

This got more and more frequent then you needed to rev it as you started it to coax it into life, now sometimes it just wont start, the problem seems more common when it been run recently so if I drive turn it off then try to restart the chances are low whereas left overnight I can usually get it going in the morning.

Changed the fuel filter which gave me 2 days of perfect starts then the problem returned, pump doesn't seem any noisier from the cab but was pretty loud when I was priming it after the filter change. Checked ECU plug which was clean, injector harness was changed a few months back, ran a new earth from the ECU to the transfer case as a precaution. Batteries are less than a year old.

I've got a pressure gauge coming so I can check the fuel pressure in a few spots but anyone got any other ideas?

9th May 2018 9:59am

dorsetsmith

Member Since: 30 Oct 2011
Location: South West
Posts: 4554

injector seal (is sump oil level increasing)

9th May 2018 10:22am

drinkdrinkdrop

Member Since: 13 Sep 2016
Location: Surrey
Posts: 76

It's definitely possible, no obvious smell of diesel but i'll get them changed and see what happens. Cheers

9th May 2018 11:15am

Tommo

Member Since: 19 Dec 2013
Location: Leicestershire
Posts: 830

2006 Defender 90 Td5 Black LE Java Black

Hi
see my post in general section about non starter.
Tommo

9th May 2018 5:16pm

drinkdrinkdrop

Member Since: 13 Sep 2016
Location: Surrey
Posts: 76

Right had seals and washers changed and a new injector loom, also changed the fuel filter return valve, this has caused a slight improvement.

A couple of oddities we’ve noticed

The only chance of starting it comes on attempts when the coil light comes on, if the first start fails the on subsequent attempts the coil light never appears and turning the key will result in cranking only with no hint of a start. You then need to turn off and wait for all the relays to click off before retrying

With the above taken into account I can usually get a start by turning to pos 2 waiting 15 secs or so then starting.

Any other suggestions?

11th May 2018 6:19pm

Dieseljock

Member Since: 03 Jun 2017
Location: Inverclyde
Posts: 31

Try snd bump start it, my mates old boys was having similar issues. Turned out the starter was corrupting the crank sensor signal

11th May 2018 6:45pm

drinkdrinkdrop

Member Since: 13 Sep 2016
Location: Surrey
Posts: 76

Right started fine this morning about 20 starts some close together some far apart so cold starting not the issue any more.

Took it for a drive for 25 mins mostly on full throttle a road, drive fine except still feels down on top end, I can get it to 70+ in 4th but not faster in 5th

Got back turned off then immediately back on and started fine, turned off again waited for relays to reset then the car will start only to stall after 3-5 secs whatever combination of clutch/throttle I use.

Ran some purge cycles and pump not too noisy and no gargles, then is some noise like a spurting near the fpr but no visible leak.

Just unplugged the coolant temp sensor and fuel temp sensor together and it fires again! So I’m assuming the issue is with fuel delivery so what’s next, pump replacement or any other checks?

Ps can you drive without coolant temp and or fuel temp sensors? For testing?

12th May 2018 10:49am

mk1collector

Member Since: 17 Sep 2009
Location: West Yorkshire
Posts: 6769

Try unplugging the MAF and see if you get your power back when driving. Ray
My build thread
http://www.defender2.net/forum/topic17615.html

12th May 2018 12:26pm

drinkdrinkdrop

Member Since: 13 Sep 2016
Location: Surrey
Posts: 76

Seems to run exactly the same with and without a MAF

13th May 2018 5:10pm

NickMc

Member Since: 01 Oct 2014
Location: Norn Iron
Posts: 1624

Any codes present?

13th May 2018 11:30pm

drinkdrinkdrop

Member Since: 13 Sep 2016
Location: Surrey
Posts: 76

No codes apart from the missing aircon, abs, rev counter etc

Tested fuel pressure 4bar at the rail in all situations the pump is running, checked amp draw and it's a steady 11.5 which seems to be with the acceptable range. Gave all the under seat relays a clean but will replace them as a matter of course.

The starting problem has now developed some consistency. engine temp low, starts 100% of the time. engine temp high, it starts then immediately dies every time, wait for it to cool down and it'll start fine. Here's a video of the issue

&feature=youtu.be

Next plan is to get a new temp sensor, i'll then unplug the fuel and engine temp sensor wiring and connect to the new sensor this should determine whether it's to do with engine/fuel temp after a drive or a hot component/electrical short when hot type issue somewhere

15th May 2018 8:14am

MadTom

Member Since: 10 Sep 2013
Location: Olomouc
Posts: 622

Try to heat the ECU itself, not just the engine. I have seen some ECUs with heat related problems (poor solder joints). "Drobek" = The Small One - Discovery 2, "Blufínek" = The Blue Thing - Defender 130, and for me at least Ford Mondeo

15th May 2018 8:21am

drinkdrinkdrop

Member Since: 13 Sep 2016
Location: Surrey
Posts: 76

Couple more bits tried today

Swapped temp sensors for cold ones, no change

Tried bump starts, same thing happens the engine starts runs for a few seconds then stalls regardless of whether you clutch it or not

Changing CPS tomorrow, fingers crossed

19th May 2018 5:37pm

NickMc

Member Since: 01 Oct 2014
Location: Norn Iron
Posts: 1624

Can you show us any live data?

You can’t really get much definitively with a volt meter, you could try and if it has a mid max scale possibly.

Do you find key on key off and building the pressure makes a difference?

19th May 2018 6:20pm

drinkdrinkdrop

Member Since: 13 Sep 2016
Location: Surrey
Posts: 76

Not got anything right now, picked up an icarsoft lr2 but was useless, would basically only show codes, nothing useful. Going to pick up a Hawkeye total or a nanocom on next week, see what that shows up

19th May 2018 6:48pm

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