TD5 accelerator problem

[applemac]

Defender TD5 2005

As I go up the gears, the revs stay up longer then usual when i depress the clutch, so when the next gear is engaged the revs are still too high. I have to pause in neutral for a couple of seconds to let the revs come down.

The computer found the following faults:

The ABS fault code memory contains no codes for current faults -: but does contains faults codes for the following intermittent faults - :
02,1 : PWM SIGNAL FAILIURE FROM ENGINE ECU, (FIRST OCCURRENCE)

The TD5 fault code memory contains codes for the following faults -:
(10,1) AIR CONDITIONING FAN DRIVE OPEN LOAD, (LOGGED)
(10,3) TACHOMETER DRIVE OPEN LOAD, (CURRENT).
(10,4) GEARBOX / ABS DRIVE OPEN LOAD, (LOGGED).

The computer faults where cleared and the contacts on the accelerator pedal where clean but the problem persists.

ANY IDEAS PLEASE and thank you on my behalf and the mechanic's as well.

[MLD]

Hi Applemac

Have you checked the wiring harness plug to your ECU? TD5's have a well known defect of oil migrating up the injector harness fouling the plug to the ECU which in turn can cause problems with injection and other engine management parameters. Real bad cases of migration will find oil in the ECU.

Clean the plug and pins at the ECU with silicon spray or WD40, dry with compressed air and see if that fixes the problem. It won't be a permanent fix. Oil already in the harness will fill the plug soon enough. There are plenty of posts on the forum about the oil in harness problem. Some advocate sealing the injector harness under the rocket cover, some say the oil migrates up the twisted wires therefore a futile exercise.

If you find the cause of the problem, post it so the rest of us can learn from your experience.

cheers MLD

[goingbush]

I think its the clutch switch.

[applemac]

Hi Applemac
If you find the cause of the problem, post it so the rest of us can learn from your experience.

cheers MLD

I will certainly keep everyone posted on the outcome.

[applemac]

I think its the clutch switch.

Somehow I had a feeling about something to do with the clutch, it seems that when the clutch is fully depressed the revs come down.
I'll have to suggest it to the mechanic.

[applemac]

Hi Applemac

Have you checked the wiring harness plug to your ECU? TD5's have a well known defect of oil migrating up the injector harness fouling the plug to the ECU which in turn can cause problems with injection and other engine management parameters. Real bad cases of migration will find oil in the ECU.

Clean the plug and pins at the ECU with silicon spray or WD40, dry with compressed air and see if that fixes the problem. It won't be a permanent fix. Oil already in the harness will fill the plug soon enough. There are plenty of posts on the forum about the oil in harness problem. Some advocate sealing the injector harness under the rocket cover, some say the oil migrates up the twisted wires therefore a futile exercise.

cheers MLD

The Harness is clean, no problem there.
I also checked the relays.

[applemac]

43185
Somehow I had a feeling about something to do with the clutch, it seems that when the clutch is fully depressed the revs come down.
I'll have to suggest it to the mechanic.

Mechanic agrees that it could well be the Clutch Switch causing the problem, he suggested disconnecting it to see if the problem disappears.

To make sure I'm disconnecting the right thing, can anyone tell me if this is the right one ?

[goingbush]

Yes that is the clutch switch,
Not sure but I think you have to turn it off in the ECU using a nanocom etc.

You can just try disconnecting it , if nothing happens put a link in there & short it out.

there is something else on it here.

http://www.aulro.com/afvb/90-110-130-defender-county/65580-clutch-switch-throttle-response.html

[TimNZ]

I know this sounds strange, but check the fuse for the brake lights. It's a bit of a odd one, but with the TDCi if you blow the brake light fuse the symptoms you have described occur, (I'm not sure if the TD5 will do the same thing...).

[applemac]

Yes that is the clutch switch,
Not sure but I think you have to turn it off in the ECU using a nanocom etc.

You can just try disconnecting it , if nothing happens put a link in there & short it out.

there is something else on it here.

http://www.aulro.com/afvb/90-110-130-defender-county/65580-clutch-switch-throttle-response.html

As I disconnected it the plug was covered in clutch fluid, it even dripped.
I think it's safe to say that we've found the problem.

Thanks everyone

[Natt]

Good to read some feed back AM, few Q's thou, oil in the harness? and ECU where do i find this? Also clutch switch? where is this? i also have a small leak of clutch fluid from above the pedal somewhere
Thanks
Natt

[applemac]

Good to read some feed back AM, few Q's thou, oil in the harness? and ECU where do i find this? Also clutch switch? where is this? i also have a small leak of clutch fluid from above the pedal somewhere
Thanks
Natt

The ECU is under the driver's seat together with relays, fuse box, etc., You'll see a box with two plugs, a red and a black right in front of you.
Unplug those plugs and see if there is any oil ingress.

The Clutch Switch, (have a look at the image I posted previously).
Open the bonnet and it will be on the driver's side, next to the Coolant overflow reservoir.
This Switch is part of the clutch master cylinder.



Land Rover Owners Club of Cairns and FNQ (http://www.lrocc.com.au)

[Natt]

Thank you very much A/M


Natt