Accelerator wont work in gear.

gib6933 said:

Yes I know you said that, but being an engineer and owning a classic car garage myself I like to see if I can fix things myself.

I was also a bit reluctant to take it to a company that said over the phone that they didnt think they could fix it, but would still charge me the £54 and plug it in.

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Buy yourself a Nanocom while the 25% discount offer is on

Well it's been on the diagnostic yesterday and LRS have been fantastic and very friendly.

But it's still broken.

The diagnostic came up with a CKS problem so I replaced that.

Still the same, but now it shows no faults and no problems on the live data.
When it's doing it's thing with the peddle incapable of changing the revs, the live data on the diagnostic can still read the peddle moving.

So I have left it there today and they will have a play tomorrow. They think it could be a wire that's playing up.

I personally think I should push it off a cliff, problem is I can't get to one. :-(

gib6933 said:

Well it's been on the diagnostic yesterday and LRS have been fantastic and very friendly.

But it's still broken.

The diagnostic came up with a CKS problem so I replaced that.

Still the same, but now it shows no faults and no problems on the live data.
When it's doing it's thing with the peddle incapable of changing the revs, the live data on the diagnostic can still read the peddle moving.

So I have left it there today and they will have a play tomorrow. They think it could be a wire that's playing up.

I personally think I should push it off a cliff, problem is I can't get to one. :-(

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I am sure there are members who would tow it there for you for a small fee.

Acronym Help??

CKS - Crankshaft or Camshaft Sensor??

CPS - Crankshaft or Camshaft Sensor??

As I have seen both being used in place of eachother...so which way round is it?? or not as the case maybe!

If it will rev out of gear and in low axle. And the throttle pot signal is being read by diag from engine ECU then something is blocking the ECU from driving the quantity servo. If it only happens when in high range it has to be down to the gearbox ECU engine ECU interface. I still fancy the torque reduction circuit.

Saint.V8 said:

Acronym Help??

CKS - Crankshaft or Camshaft Sensor??

CPS - Crankshaft or Camshaft Sensor??

As I have seen both being used in place of eachother...so which way round is it?? or not as the case maybe!

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No cam sensor on the diesel Ant. So crank sensor it has to be.

wammers said:

No cam sensor on the diesel Ant. So crank sensor it has to be.

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Ahhh....makes sense!

Try replacing the temp sensor under the manifold as it seems to be connected to the engine and gearbox in some way.not saying that is the cause of your problem but worth a try.

wammers said:

If it will rev out of gear and in low axle. And the throttle pot signal is being read by diag from engine ECU then something is blocking the ECU from driving the quantity servo. If it only happens when in high range it has to be down to the gearbox ECU engine ECU interface. I still fancy the torque reduction circuit.

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I wonder Tony if it's actually just a total lack of power, mine will revout on relatively little throttle in low range, ditto out of gear, it may just be that there is not enough power to shift it in high range?

Datatek said:

I wonder Tony if it's actually just a total lack of power, mine will revout on relatively little throttle in low range, ditto out of gear, it may just be that there is not enough power to shift it in high range?

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Would be a serious problem if that were the case. He said i believe he could rev it out of gear then drop it in and it worked until it went back to idle. Interesting one, but to be frank apart from speculation i don't have a bloody clue what's wrong with it. It will be good to know what it was if it's ever sorted.

To try and eliminate the gearbox ecu, couldn't the gearbag ecu just be disconnected and then just to prove a point try it?

doz said:

To try and eliminate the gearbox ecu, couldn't the gearbag ecu just be disconnected and then just to prove a point try it?

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The car would no doubt throw a hissy that the ECU is disconnected....I amsure the BeCM goes through a 'roll call' on startup

doz said:

To try and eliminate the gearbox ecu, couldn't the gearbag ecu just be disconnected and then just to prove a point try it?

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I have replaced the gearbox ecu and no change. :-(

doz said:

To try and eliminate the gearbox ecu, couldn't the gearbag ecu just be disconnected and then just to prove a point try it?

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How would the gearbox engage any gears with no ECU to drive the solenoids?

Just a quick update:

LRS still have it and can't find the problem.

When its not in gear does it rev normally ie past 1000 rpm and beyond ? Try this plenty of times,are the revs smooth? on decelerations does it hang momentry at all?

What is the rpm at standstill don't rely on the taco do it on live data .
When you put it in gear check fuelling on diagnostics
Check current fuelling when in n and when in gear.
Also a dedicated diagnostics can do two checks on the throttle pot I think one is % and one is voltage check via pedle ie you might be getting a feed to throttle but the throttle itself should rise in volts .

Personaly I think its your fip its stuck under load
I had the same problem it would rev but in gear it would not get going until the revs passed 0ver 1000 rpm once back to tickover struggles to rev in gear without picking up revs first .

Like suggested unless your garage has a dedicated diagnostics machine it will only give you the basics .
Ps your engine management will only pick up a failed cps or needle lift sensor and maybe the elab Solinoid shut off same as diagnostics might only tell you somthing is wrong by reading live data for instance if my rpm was too low and the car kept stalling I would not get a code saying rpm too little but I might get cps failed or fuel quantity too low you need to be a bit of a detective with some faults not everything is black and white and served on a plate

The throttle pots connections


Also say with a nanocom , through the auto box ecu you can check throttle position,plus engine power , I'm not sure where engine power Derives from? and tally it with the readings on the nano under edc ecu throttle pot %( position ) and volts.im not sure about other diagnotics makers tho.

wammers said:

It depends what diag unit they use. If it's Snap-on or Autologic maybe not, but a dedicated diag should find it. There is a signal not going somewhere or a signal going somewhere that it shouldn't. A good dedicated diag should pick that up.

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Just looked them up looks like its autologic not good

Still they got 35 years experience and not a dedicated diagnotics !
Land Ranger Services

Bump, c mon enlighten us gib

Just given them a ring and they haven't had chance to have another look yet. They might get chance this afternoon.

I hope I get it back before the snow, or before fuel hits £4 a litre.

I'm going to to have a word with them about what you have said, thanks for the ongoing help!

gib6933 said:

Just given them a ring and they haven't had chance to have another look yet. They might get chance this afternoon.

I hope I get it back before the snow, or before fuel hits £4 a litre.

I'm going to to have a word with them about what you have said, thanks for the ongoing help!

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Thanks and good luck hope its something simple