Bad starting, help!! Loose wires!!

This site contains affiliate links for which LandyZone may be compensated if you make a purchase.
T

taLL

New Member
Posts
26
Location
south wales
I set about changing my glow plugs the other day, but the ones halfords sold me were incorrect. I will hopefully get some others tomorrow from another motor factors. But anyway I found a wire with a plug not attached to anything, the other end seems to go into a junction box that then feeds the glow plugs, what is this supposed to be connected to and where should I find it in the engine bay, I think the plug has melted off!
 
what engine ? .. L-series or td4 ..

best to attach a pic .. if possibe ..
( for a chance of someone recognising the bits .. 'n offering an answer )
 
this is the plug....
IMG_1146.jpg


found another one off on the driver side too although doesn't look like its anything to do with glow plugs like the above, any ideas were either one goes, cant find them in the manuals you linked for me?!
IMG_1153.jpg


any help would be great!:confused:
 
i've realised that the second plug is the one i disconected from the induction manifold doh!:rolleyes:

But im still stuck with what the 1st one is for, i dont want to put my manifold back on until ive soted this incase it needs to come off again to reconnect it.

anyone know what its for
 
i've realised that the second plug is the one i disconected from the induction manifold
Click to expand...

er .. Top photo ?????????
( cause that looks nearer to the induction manifold .. passenger side .. )

this .pdf shows where most td4 engine sensors .. and similar bits .. are ..
http://www.rover-club.net/graphics/manuals/16/m47r_diesel.pdf
( although .. the mystery connector might not have anything to do with engine management )

some vehicles have unused connectors where a fuel-burning-heater would be fitted
normally on passenger side at front ( i think )

some vehicles had their injector harness replaced with an upgrade ..
due to water ingress problems ..
though .. not sure if that upgrade would leave unused plugs about

what year is your td4 ??

is the now 'unknown' connector something you disconnected ..
or has been like that since you've had the vehicle ..

~~~~~~~~

where does that other cable end up ??
the cable running Under your finger .. lower photo
( am assuming .. maybe wrongly .. that ..
( the lower photo is the current mystery connector
 
Last edited:
lower photo is the one that connects to the induction manifold/air box. the mystery connector is the top photo, its on the passenger side of the engine, you can just see a glow plug to the left of the connector next to the tissue paper in the induction port!.

its a 2004 hse td4. It's not something i have removed and it had a little burnt plastic on it (possibly the other half of the connector?!) Ive had cold starting problems intermittently ever since i bought it 2 years ago.

ill have a look at the that link now.

Thanks
 
as far as the nikrivers pic goes ..
his has a tuning box fitted ..
http://www.nikrivers.com/freelander-td4

i've got same .. and the harness splits in the same Y fashion ..

~~~~~~

can see what you mean in the next post-pic ..
but am non the wiser as to what it may be .. :-/

~~~~~~~

all-in-all confusing .. 'cause that mystery plug looks the same as
the one plugged into the fuel rail sensor .. same wiring colours by the looks of it
( blue / brown / white ??? )

in fact .. the direction that mystery plug is coming from .. looks the same as my fuel rail sensor
.. Before i added the tuning box .
( i'd have to double check that by looking under the bonnet ..
( maybe tomorrow .. if it aint ****ing down with rain or sleet .. or dog 'n cats ..

and before i installed the t.box ..
the fuel rail sensor wiring did Not look like that other pic
( http://www.landyzone.co.uk/lz/attac...5051-td4-lack-power-70mph-fixed-egr-valve.jpg )

~~~~~

would have thought .. if it were common .. or the plug type recognised ..
a few folks would have made suggestions ..
given the number of td4 owners hereabouts ..
 
Last edited:
taLL said:
this is the plug....
IMG_1146.jpg


found another one off on the driver side too although doesn't look like its anything to do with glow plugs like the above, any ideas were either one goes, cant find them in the manuals you linked for me?!
IMG_1153.jpg


any help would be great!:confused:
Click to expand...
hmm wires look same color as fuel rail pressure sensor,maybe had the loom conversion for pressure sensor but dont know if this involves leaving the origanal connector disconected:confused:
 
the fuel rail sensor is wired direct into the l shaped fuse box, the mystery plug comes from a small junction box that is below the engine temp sensor and is common to the glow plug leads (they come out of the same box).

appreciate your input guys, hopefully get to the bottom of this with your help.
 
had a look a mine ( '06 td4 ) .. with torch and mirror ..
from what i could see without removing intake bits ..

that mystery plug on yours .. corresponds to the fuel-rail-sensor plug on mine ..
it leads back to that junction box you mention ..
and from the junction box .. there's a large conduit cable/hose that goes back to the engine management / fuse box ..
( that's 1 of 2 large conduit cables/hoses .. the other one goes from the e.m./f. box towards the injectors )

.. that sort of suggests your's has had a harness change at some point ..
 
ive looked at more engine photos on google and it seems that i do have a extra cable coming from the L shaped box to the rail sensor.

so it does sound like a feeasable explanation. i'll put it back togethar tonight and see if my new glow plugs have made any difference:scratching_chin:

Ill let you all know how i get on.

thanks again...
 
yes the one in the intake is on the driver side, that is connected.

im fairly happy with the idea that the mystery plug is now obsolete, but my intermittent cold starting is still a problem after changing the glow plugs.

the glow plug light on the dash sometimes doesn't light up even when the engine is stone cold, it seems that when the coil does light up then it starts without any problem. any ideas what i should be checking next. i was thinking glow plug relay or possibly engine temp sensor (my fans appear to be working ok)??

is there any way to prove the relay?
 
taLL said:
yes the one in the intake is on the driver side, that is connected.

im fairly happy with the idea that the mystery plug is now obsolete, but my intermittent cold starting is still a problem after changing the glow plugs.

the glow plug light on the dash sometimes doesn't light up even when the engine is stone cold, it seems that when the coil does light up then it starts without any problem. any ideas what i should be checking next. i was thinking glow plug relay or possibly engine temp sensor (my fans appear to be working ok)??

is there any way to prove the relay?
Click to expand...

i dont think glow plugs have anything to do with cold starting on direct injection engines, as far as i know there just for emissions on cold start up but i could be wrong;)
 
You must log in or register to reply here.

Similar threads

S
Glow plug power
Replies
10
Views
397
Singr07
S
torr_td4
2005 Freelander 1 TD4 glow plug replacement
Replies
1
Views
850
Alteredtech
Alteredtech
M
FL2 trouble starting - glow plugs recently replaced no light on dash
Replies
3
Views
1K
Nodge68
Nodge68
M
Starting issues
Replies
6
Views
790
mac541
M
J
Electric Nightmares (glowplug/relays/fuses)
Replies
17
Views
1K
JRo
J
Back
Top