Throttle Body Cleaning: T3 WBX (Solved)

Hi,

How is the throttle valve mounted on the T3 (MJ 89) carburetor?

At first glance, I see a large clamp connecting the rubber hose to the air filter housing, and two Phillips-head screws on the air intake manifold, which is mounted on the engine.

The throttle cable coming from the front, and a vacuum-operated sensor that controls a second throttle valve (?), also need to be disconnected from their surroundings.

The bus has a problem where the idle speed gets stuck at 1200 rpm when it's warm. However, it's NOT the typical "cigarette" issue.
Because if it's warm and "stuck," you can push the DK just a millimeter further, and everything will fit.
You can do it from a standstill by lightly tapping the accelerator and letting it slip, then the DK will engage properly.

The plan is now to expand and clean the thing.

PDFs with instructions are welcome .

Sure, no problem. Here's the translation:

"Thank you in advance."
m;

It's actually self-explanatory.

Remove air filter.

Disconnect the air filter intake hose.

Disconnect the gas cable.

Remove the throttle body housing.

And don't swap anything around, and be sure to label any wires, cables, or connections.

Perfectly explained car service , you don't need any instructions, it's very easy, and everything is very clear.

You're right, it wasn't that bad.

The throttle body was disassembled (the butterfly valve was removed and its edges were polished) and then reassembled.

The idle speed is stable, both when cold and when warm.

Now I've discovered a crack in the exhaust .

You must not install the throttle cable too tightly!!!

Otherwise, the engine will start revving up again when it gets warm.
Somehow, the vehicle seems to lengthen during operation (the Concorde did the same, and a T3 almost reaches its speed ).
Once the engine is fully warmed up, the throttle cable suddenly becomes too short, resulting in a low idle speed of 1500 rpm.

Quote:

The vehicle seems to elongate during operation

.
Reduce towing load .

With a front-wheel drive vehicle, I would understand that, but in a T3, the brutal power of the engine seems to compress the car rather than propel it forward.

Best regards,

Jan.

It's silly when you only read diagonally. You're right, I was thinking about the T4.

Is the throttle cable and accelerator pedal easy to operate? It's not uncommon for them to become stiff or difficult to move!

Sure, here's the translation:

"Nene,"

Everything is okay now.

Everything is working smoothly.

During assembly, I had pulled the rod tightly towards the back of the flap and then screwed it in. So, it was already under some tension.

Apparently, the thermal expansion of the gearbox components (specifically, the throttle valve moving away from its pivot point on the gearbox housing) was enough to cause the now extremely light throttle valve to open slightly.
And that really revs up the supercharger.
That's why he specifically designed that cross-section bolt on the DK, to reduce the cross-sectional area when the opening is small.
Otherwise, he could probably only use "Kickdown" .

Other WBX models apparently also had a third spring (in addition to the two directly attached to the distributor cap) that pre-tensioned the throttle lever on the air distribution manifold.
"It's no longer available, and I don't think it was ever included in "our" SS version."
However, all the air ducts have a support at the rear, upper end of the seam.

Hmm, this SS has the pen.
[dead image link]

m;

Quote:

But none of that has anything to do with cleaning a throttle body anymore. Therefore, it is now closed here. icon_wink.gif

For those interested in the fuel consumption of such a vehicle:

Okay, I'm ready. Please provide the German text you want me to translate.