Cruise control vacuum pipes

little1uk · Feb 13, 2013

Ive had a quick search and cant find where it says the vacuum pipes are, its a Disco 2, i cant see them but then i dont know what im looking for, anybody know where they are and can give me a description id be eternally grateful

discool · Feb 13, 2013

Have look at the vacuum pump assembly there's a short length of pipe to actuator.
Location O/S inner wing.

xat44 · Feb 13, 2013

i dont know why i think this.
but is`nt it electronic on the d2?

discool · Feb 13, 2013

xat44 said:
i dont know why i think this.
but is`nt it electronic on the d2?

Electronic? electronics deals only with the electrical circuit.
Or do you mean electrical as in electrical and mechanical? which vehicle cruise controls are.

So the answer is NO

If you had looked in a D2 workshop manual you would have found this.

All markets have a common cruise control system. The cruise control system, when activated, regulates vehicle speed.
The system consists of an electrical sub-system and a mechanical sub-system.
The electrical/mechanical sub-system consists of the following components:

l

Cruise control master switch (on/off switch).

l

SET+ switch.

l

RES switch.

l

Cruise control ECU.

l

Vacuum pump assembly.

l

Brake pedal switch.

l

Clutch pedal switch (manual gearbox only).

l

SLABS ECU (speed signal).

l BCU (brake pedal switch and automatic gearbox gear selector lever position signal).

little1uk · Feb 14, 2013

Found, sorted, repaired, i can put me feet on the dash and relax again when on a motorway

Thanks for where to look

thebiglad · Feb 14, 2013

discool said:
Have look at the vacuum pump assembly there's a short length of pipe to actuator.
Location O/S inner wing.

Now this time I know I'm right in saying the DII TD5 cruise control DOES not work on a vacuum system like the DI does.

It's an electronic system which works between the ECM;SLABS and the BCU.

discool · Feb 14, 2013

thebiglad said:
Now this time I know I'm right in saying the DII TD5 cruise control DOES not work on a vacuum system like the DI does.

It's an electronic system which works between the ECM;SLABS and the BCU.

Oh Dear U have introduced a diesel into a V8 thread, They are different I know and would have stated the correct operation for a TD5 if the OPs D2 had been fitted with a diesel engine.

And why are you comparing the two systems (D1 & 2)? both are electrical mechanical therefore similar in their operation, as stated in post #4.

jamesmartin · Feb 14, 2013

discool said:
Oh Dear,

So what DOES hold the throttal open?
And why are you comparing the two systems (D1 & 2)? both are electrical mechanical therefore similar in their operation, as stated in post #4.

td5 is flyby wire theres no throttle cable ,like v8

discool · Feb 14, 2013

jamesmartin said:
td5 is flyby wire theres no throttle cable, unlike v8

I'm sure you ment to say unlike and thanks, but I do understand the difference between the two engines, that one has an accelerator pedal and potentiometer the other has the pedal and a cable.
The OP has a D2 V8 and therefore this is a V8 thread and hence he has the latter electrical and mechanical cruise control.

jamesmartin · Feb 14, 2013

discool said:
I'm sure you ment to say unlike and thanks, but I do understand the difference between the two engines, that one has an accelerator pedal and potentiometer the other has the pedal and a cable.
The OP has a D2 V8 and therefore this is a V8 thread and hence he has the latter electrical and mechanical cruise control.

it was meant to mean like the v8 has (cable that is)but unlike might be a better way of putting it

HenryD · Feb 15, 2013

D2 V8 is an old vacumn mechanical set up,mine works but is crap,I don't like the way the pedal goes up and down.

discool · Feb 15, 2013

I can honesty say I have never look at my accelerator pedal when the CC is on to see what happens, not that I would whilst driving, in fact the pedal is hardly visible from my normal driving position.

Cruise control vacuum pipes

little1uk

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xat44

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little1uk

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thebiglad

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jamesmartin

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