Engine shaking a little

[zoheb]

Hi,

I've had my Ibiza 130 for about 14 months now and since i've got it I have noticed that on some occasions when I stop at traffic lights the engine seems to shake a little and as a result it feels as the car is shaking. it does it for about 2 seconds and then it stops for about 3-4 seconds and does it again. This cycle carries on.
It only happens when my fott is completely off the gas.
I took it to a garage and the mechanic said that I need to use diesel injector cleaner which I did several times but it didn't fix it.

When I took it to the mechanic, he opened the bonnet and we saw that you can actually see the engine shaking and when I touch the gas pedal a little it stopped shaking.

Any ideas.
Thanks

 

[Viking]

Possibly the Dual Mass Flywheel on its way out. Also, I seem to recall a lumpy tickover being fixed with a software update a few years ago which increased the idle speed by only a few rpm, but it was enough to stop the lumps.

 

[zoheb]

thanks. any ideas how I can get this software update?

 

[Viking]

Oh, that was some 8 or 9 years ago. I don't think it'll be the case in your problem. I was just thinking out loud really. My money is on the flywheel.

 

[zoheb]

lol ok, thanks

 

[gus]

could this not be an engine mount?????

 

[beezanick]

Mine does exactly the same, apparantly it is a missfire. Its fine at any other engine speed though. I hope its not the DMF on its way out...

 

[JamesL]

doesnt happen to be when you have the aircon on does it?

 

[beezanick]

Not with me....... The compressor clutch has gone

 

[zoheb]

A friend of mine suggested it cold be the engine mount but the mechanic I had seen at the time insisted taht it was the injectors needed cleaning so am not sure but it could be possible.

It happens even with the air-con off. yesterday I took the car to kwik fit to have the air-con re-gassed and they said that I had a leak somewhere so they couldn't re-gas. Anyone know where I could get this problem sorted around the Leicester area?

My knowlegde on how cars work is not that great so have no idea what the compressor clutch is.

An if its the DMF, is that an expensive part to replace?

Thanks for the replies

 

[beezanick]

If its the DMF - its about £300 for the parts, and probably about £300 for labour. It is effectivley the same as changing the clutch.

The compressor clutch is the thing which allows the engine to drive the compressor or not. Effectivley it alows you to turn the ac on of off.

A lot of people seem to have this problem and the topic comes up regularly in the mk4 section. Its generaly considerd to be a feature of the engine.