Freelander 1 TD4 fuel pump's problem

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vanoss

New Member
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5
Hello,
I'm a Freelander1 2003 TD4 posesor, i have a weird problem:
A week ago, the engine does not start at first attempt but second time start.. After 2 days the problem has returned, but this time the engine doesn't start at all.
I made verifications and i found that fuel pumps (high pressure pump and fuel tank pump) is not working when i put the ignition, checked the wiring and i found that the +12v (white-violet) wire has no tension (on fuel tank pump).
I manualy put 12v on pump tension wire and pump's start and engine start's.
I searched in wiring diagram and i found a possible problem at FUEL PUMP RELAY (R103) or SWITCH-INERTIA (S206), but don't know where is located, because isn't in fuse box.
I put in attachment the wiring diagram for pumps and i hope that someone will help me to locate those 2 elements (R103 and S206).
 

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If you reffer about R1, that is an relay for petrol engines, mine is TD4.
On my car, that position is empty, it has no relay there.
And about the inertia switch, i can't understand the location... if you can put an photo with a red circle for the position. I don't even know how it looks...
Many thanks for you interest!
 
If you reffer about R1, that is an relay for petrol engines, mine is TD4.

the 'haynes' manual for oct. 2003 / oct. 2004 freelanders .. petrol and diesel
has that R1 in the same position in the engine compartment fusebox ..
makes no distinction between petrol and diesel models for that ..
i.e. they both use electric fuel pumps

On my car, that position is empty, it has no relay there.
maybe someone rewired it ? .. moved the relay ..
sorry .. i don't have an answer for that ..

re the inertia switch ..
according to the haynes manual .. it's the one in the attached pic..
( green arrow ) .. on mine ( td4 ) it has a red cap on it ..
it be located under the engine fuse box .. attached to the inner wheel arch by the looks of it ..
 

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Ahaaa, i understand now, that is a switch that turns off fuel pumps if the car have an accident.
I found an relay near the fuse box from engine compartiment, but in exterior, it has the white/violet wire which is present at fuel pump too, i shook him, and the pumps are working now, the engine starts's well without exterior +12v but the yellow pump indicator from dash panel is still burning...
I'm not an expert in electronics, but i removed the cap from relay and i looked at the relay while i put the ignition, and there wasn't any move at the contactors, i heared an "click" (which engages the pumps) somewhere behind fuse box panel from interior (maybe is the second relay for the pumps).
L.E. I forgot to mention that my car was an RHD and moved to LHD and the mechanics/electronics are not very well made
 
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I found an relay near the fuse box, but in exterior, it has the white/violet wire which is present at fuel pump too, i shook him

good to read that you found it :)

maybe all that's needed is for the connectors to be cleaned up ?
i.e. the relays are like electric plugs .. and the pins and sockets can get dirty and corroded ..
 
Hi hd3,

My td4 2004 has slightly different problem in that it starts first time from cold every time, but once engine is warm, very slow to start. I can hear the main pump under rear wheel arch so from reading other feed back online am being pointed to changing or at least cleaning the in tank fuel pump ...does the gunk in fuel tank somehow melt and block the inlets to the fuel pump?

Will spraying contact cleaner on the inertia and relay switches help first?

Also being recommended to fiddle with high pressure sensors, MAF sensor, cam sensor, crankshaft sensor!???

Cheers mate.
 
My td4 2004 has slightly different problem in that it starts first time from cold every time, but once engine is warm, very slow to start.

that symptom usualy points towards a failing camshaft sensor

from: ROVER 75 MGZT ENGINE FAULT FINDING
( have a read thru that page in anycase )
" CAMSHAFT SENSOR varies - worse when hot. Indefinite. No affect on performance, only starting. Starting is much worse when hot. "
" CAMSHAFT SENSOR. (quite common) This is used only during cranking to synchronise the timing by indicating when no1 cylinder is on its compression stroke. So if it is faulty, starting becomes difficult and may vary depending upon the temperature of the engine. Once running, as the sensor is no longer used, the car will run normally. This is one way to distinguish between camshaft sensor and crankshaft sensor failure. "
" Remove the sensor and place cool in a freezer or spray briefly with freezer spray, If the engine starts it could confirm the sensor is faulty. "

also page 56 here:
http://www.rover-club.net/graphics/manuals/16/m47r_diesel.pdf

I can hear the main pump under rear wheel arch so from reading other feed back online am being pointed to changing or at least cleaning the in tank fuel pump ...does the gunk in fuel tank somehow melt and block the inlets to the fuel pump?

i don't think the td4 has an 'in-tank-fuel-pump'
early models had the electronic low pressure pump in the engine bay
then it were moved to the rear wheel arch

the sedimenter .. by the rear arch pump .. should be drained once in a while ..

~~~~~~~~~~~~~~~
links to freelander1 info
~~~~~~~~~~~~~~~
 
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