TD5 Manual. Engine Check light on and no throttle response.

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TD5 Manual. Engine Check light on and no throttle response.

Postby andymach23 » Thu 17 Dec 2009 5:23 pm

The car starts fine and revs ok in neutral.

When I try and reverse up the drive, the car initially catches but then the revs die off and the engine check light comes on. The throttle won't respond at all.

The car has been running great up to this and there are no oil in harness issues.

I got the RAC out a naturally it didn't do it when the bloke was there. Logged codes...

3129 Road speed missing fault logged
3141 Driver demand has been faulty
3144 Exhaust gas re-circ valve stuck open
3145 EGR stuck closed
3172 EGR stuck closed

Faults cleared and road tested.

Faults now logged are 3145 & 3172 EGR stuck closed.

Not sure if the EGR would make the car do this as loads of people have em removed. I've fitted a blanking plate but the EGR is stil present. Can I disconnect a multiplug for the EGR to rule it out?

Cheers, Andy
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Postby Ricky » Thu 17 Dec 2009 7:13 pm

You can unplug the egr but it will still leave a code
Can you get it on a nanocom and see what it says, i think The rac kit reads generic obd codes, if thats the case there may be other codes floating about
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Postby andymach23 » Thu 17 Dec 2009 7:19 pm

Ricky wrote:You can unplug the egr but it will still leave a code
Can you get it on a nanocom and see what it says, i think The rac kit reads generic obd codes, if thats the case there may be other codes floating about


Cheers Ricky

It looks like I'll have to fork out for a Nanocom.
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Postby Ricky » Thu 17 Dec 2009 7:29 pm

i might be wrong!
None of those codes should prevent starting, my Gut feeling would be crank sensor .
Just re read and changed my mind :lol: crank sensor failure wouldnt alow it to idle.
Is it only when reversing up the drive?
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Postby andymach23 » Thu 17 Dec 2009 8:06 pm

Ricky

Yes, all seemd fine until I stuck it in reverse and lifted the clutch to drive away. Then the light came on. I could rev it in neutral ok.

When I restarted, the engine check light was out and the car rev'd in neutral fine again. Same deal when trying to reverse. I couldn't try forward as I had no room.

The RAC guy came out an hour or so later and the car was back to normal. Strange!
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Postby Ricky » Thu 17 Dec 2009 10:23 pm

3141 Driver demand has been faulty
Could be the problem but i have seen a few things that cause that, obvious one is the pedal itself, check the wiring plug into the pedal assembly and double check the black plug into the ECU you could do a continuity check between the two. if the pedal was worn i wouldnt expect the fault to be intermitent
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Postby Cyberprog » Fri 18 Dec 2009 1:06 am

Odds are if it's a driver demand error your throttle potentiometer is faulty. Reasonably common fault, and is caused by a mismatch between the throttle position pots as there are 2 or 3 of them in the throttle housing. Obviously it's designed to fail to a safe position, not to allow the engine to rev it's [leafsprings] off and shoot up your drive :)
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Postby andymach23 » Fri 18 Dec 2009 1:23 am

Thanks guys!

I'll look into these suggestions.

Cheers, Andy :)
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Hopefully now fixed!!

Postby andymach23 » Sat 19 Dec 2009 1:21 pm

The car developed the fault again last night. I left the engine running at idle and had a look under the bonnet. I touched the bracket for the earths that connect beside the ECU, from the main battery etc to see if it was secure.

It was roasting hot and I burned my fingers :oops: . The main battery negative clamp also had a bit of movement.

I tightened both of these items and all seems well. Hopefully not jumping the gun here, but it looks like it's sorted.

Thanks to all who heped out with this.

Cheers, Andy
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Postby Ricky » Sat 19 Dec 2009 2:20 pm

Who would of thought it, a Landrover with an electrical fault :shock:
Glad its sorted mate :lol: :lol:
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