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[Peti]

"... If you remove the immobiliser chip, the car will turn over...."

Yes, it does, even if I use my spare key, with no microchip in it

[Kevin Wood]

So I managed to escape the animals thrown at me by those French gatekeepers...but I'm still outside the castle !

What next ?

First, Build a great big wooden rabbit...

[Peti]

Can anyone tell me how long should I try turning the motor with the starter only, waiting for the oil lamp go out ?
I tried again for 20-30 seconds,my battery lost quite a few volts, and I'm a bit uncertain if that lamp would ever go out.

[Kevin Wood]

Never tried on a V6, but I wouldn't be surprised to find that it takes 5 or 6 attempts and 30 seconds of cranking each. Fully charge the battery beforehand, remove the spark plugs and dribble a little oil in each bore to reduce the load on the starter, and stop and give it a charge if the battery gets low.

[Peti]

O.K., it's calming to read, i'll try....

Anyway :
I woke up this morning as a "newbie".
Now that I found that ....cking white rabbit with the black button-eye , that was sucking my blood for 2 days.....can I take a seat at the Round Table ? ( don't forget :  I also changed the pollen filter all by myself ! )

Neither Haynes, nor you ever mentioned that bunny....however, it solved the problem.
I've just seen there's a sign on it that reads : "Solve-everything-button"

[omegod]

O.K., it's calming to read, i'll try....

Anyway :
I woke up this morning as a "newbie".
Now that I found that ....cking white rabbit with the black button-eye , that was sucking my blood for 2 days.....can I take a seat at the Round Table ? ( don't forget :  I also changed the pollen filter all by myself ! )

Neither Haynes, nor you ever mentioned that bunny....however, it solved the problem.
I've just seen there's a sign on it that reads : "Solve-everything-button"

So it works then?

[Peti]

Y

[Peti]

"...idle controlled by Idle Control Valve, itself controlled by ECU.  Do not adjust the screw on the butterflies, you will bugger up the idle....

Now, I tried to start the engine twice.
Both times it goes ...up... and up... and up....
At 3000 rpm I decided to stop, I'm really afraid of doing any harm.

(Anyway, the small "winter mode" lamp at the selector lever is on and I cannot kill it.)

So this is the first start after a headgasket change.

Any idea ?

[Andy H]

The adjustment screw on the butterflies is there to act as a stop to prevent the butterflies (hard metal discs) from chewing into the throttle body (soft metal). As The Boy says you should never need to touch that screw.

If someone has foolishly fiddled with it in the past then I would take the throttle body off the car, hold it up to a light source and adjust the screw so that No light is visible when the throttle is shut. If you unscrew the screw a little too far you will probably feel the the throttle jamming in the closed position.

Unless you have upset the throttle stop screw recently I would leave well alone.

Instead I would check for air leaks (eg inlet manifold 'O' rings, vacuum hose not connected, idle air valve not pushed into hole on manifold etc)

Also I would check that the idle air valve (IAC) is free to move). If you have cleaned it recently you may have disturbed something.

[Peti]

Let's suppose there's a huge gap somewhere in the breathing and/or vacuum system.

Wouldn't that mean it gets high instantly as I turn the key ?

In fact, it goes slowly and evenly up and up .....takes some 10 seconds until it reaches 3000rpm.

As regards ICV valve : HOW can it be tested if I pull it off ?

[Peti]

ICV valve indeed looks dirty.

I removed it and saw it was open (some dirt is visible, arrowed with green) :



As soon as I touched it with my fingertip, some spring mechanism closed it.
Some gap still left, you can see it between the 2 red arrows, I think it must be some default setting :



The fact ,that I had to touch it to close means it is NOT free to move, because of dirt.

After cleaning, should it be LUBRICATED ? (WD40 ?)

[aaronjb]

Yep - clean it and then lubricate with some light oil (I think some '3-in-1' or 'light machine oil' is probably better than WD40, but WD40 is probably easier to get in there..)

[Peti]

For a while it worked O.K., i.e. at startup went up to 2000rpm, and then smoothly and evenly down to normal idling....... :



Now it works like this  ( TC light is ON and OFF during this uncertain period ) :



Does this mean the Idle Control Valve should be cleaned again ( or more thoroughly ) ?

[Andy H]

If the TC light is on & off then I would start by eliminating it from your inquiries.

It might be that your TC module is faulty and causing the problem. What happens if you pull the fuse to temporarily disable the TC?

[Peti]

Fuse removed

Still doing that

Accelerator pedal pushed down

Everything is O.K.

Fuse back

Still O.K.

Seems it was just the pedal !!!

Much ado for nothing !
( ...well, a stuck pedal is not "nothing", but I'm pretty happy I'm not forced to remove anything again... )

Thanks for the reply ( ...and thanks to NASA for lending me their high-tech computer to create those schematic diagrams :O)