Shake when turning off engine

[cam7777]

Hi All

My PD100 has started to shudder a bit when switching off the engine, would I be right in thinking something has gone wrong with the anti shudder valve?

Has anyone else had this issue? no faults are being logged...

All advise welcomed.

Best regards

Cam7777

[mathepac]

I know that since I put the Allard Race Pipe on my Fabia VRS, removing the EGR, the ASV has gone as well and I get the "shakes" a trifle when switching off. I don't know if they are in the same assembly on the PD100.

[devonutopia]

If it's standard, I'd put money on your dogbone mount being shot, rather than anything else. Maybe the anti shudder valve is starting to play up too - that's your 2 areas to focus on first. Check the vacuum hose is attached to the round nippley thing on top of the EGR valve area (on left side of intake manifold). Then check the dogbone mount by rocking the engine in situ, with it turned off. If it clonks down below = new mount. If that seems OK I would then remove the whole EGR assembly and thoroughly clean it as it could well be sooted up inside, especially if high miles

[BoilingPoint]

Does the engine need decoking?

[cam7777]

Thanks for the replys.

I have squirted copious amounts of GT85 around the ASV linkage and it now seems OK.

Jason, I reckon you could be right about it maybe being a sooted up EGR, does anyone know if there is a guide on stripping and cleaning the EGR?

I have done a search but can't seem to find one.

Is it a straight forward job? do I need to buy a haynes??

Thanks again.

[Paul_H]

Had the same problem on a VW Polo, was a split in the brake servo vacuum hose, which resulted in the anti-shudder valve not being supplied with enough vacuum. Check the hose especially at the ends.

[devonutopia]

Is it a straight forward job? do I need to buy a haynes??

I don't think haynes is needed. You any good at stripping things down with a logical head? Well, that's what you need to do. There's 3 bolts that attach the EGR to the inlet manifold (allen key from memory) One bolt is a pain but when you've undone two it will spin a bit. Not sure how EGR pipe comes off the back. Boost pipe just unclips I believe. Once off, you can clean it thoroughly.

If you're feeling really brave you could remove the whole inlet manifold as well

[aerofurb]

Had exactly the same thing on my vRS. When it went in for a 60k service/MOT it came back without said shudder.

On the MOT they found a split in the servo vacuum hose, so from what others say I would look at this.

Other work carried out included the fitting of a Sachs clutch, cambelt, suspension bushes. I thought perhaps it was the clutch but looks like it was the split hose.

[devonutopia]

A split hose in the one which feeds the turbo actuator is also not good! Mine was burned through when the hose came out it's clips and rested on my exhaust manifold....

[cam7777]

Thanks very much, I do my own servicing and most repairs so will plan in an EGR strip and pipe check.

When help is needed, this website is the best!

Regards

[vRS Dovit]

Thanks very much, I do my own servicing and most repairs so will plan in an EGR strip and pipe check.

When help is needed, this website is the best!

Regards

Dont strip the EGR, just replace with the "power pipe" lol

At least you'd know for defo that it was the ASV lol :P