B5 RS4 starts shaking when floored

Post by **LOWR1D3R** » Sun Nov 15, 2009 8:54 pm

Shaking took place first time last sunday.
I was doing 80km/h on 6th gear and dropped to 3rd quickly. I was going to pass this car ahead of me, but when i hit 3rd gear in the car started to shake and shiver like hell. Felt like car paralyzed in a sec. ESP didnÂ´t flash even once.

Today i was driving 50km/h on 3rd gear when i accelerated heavily. Car started shaking again.

Both times i had same gear on, but different speed and revs. Not icy road etc.

This has happened only twice.
No any fault codes.
EGT sensors renewd 1 month ago.
Spark plugs and ignition coils 30 000km ago.

Has anyone else had similar issues?
What could it be??

Post by **grizz** » Sun Nov 15, 2009 9:25 pm

30,000 on a set of spark plugs ..... Get them changed ....

Post by **LOWR1D3R** » Sun Nov 15, 2009 9:56 pm

What kind of plugs have you put on? partnumbers, brands & models?

Post by **juice** » Mon Nov 16, 2009 12:01 am

http://www.rs246.co.uk/index.php?name=P ... 1b6449bab7

see that thread, i bought the Bosch plugs. MRC will recomend the same, and they can be bought at the best price from Virdee. not sure how much your postage will be tho

Post by **Sql_RS4** » Mon Nov 16, 2009 12:20 am

One of your spark plugs is dead. Happened to me twice. Once it was just like 2000 kms after last spark plugs change.

Post by **TopBear** » Mon Nov 16, 2009 12:30 am

30000km = ~18K miles

Post by **LOWR1D3R** » Mon Nov 16, 2009 8:23 pm

Plugs are now replaced with new ones.
ThereÂ´s a second possible cause for this failure.

Broken joint. See pic.

Lil bit of welding tomorrow.

Post by **jimbo1234567** » Mon Nov 16, 2009 9:56 pm

get them all welded up. no more boost leaks mate.

Post by **davey** » Mon Nov 16, 2009 10:03 pm

jimbo1234567 wrote:get them all welded up. no more boost leaks mate.

my weld had a pin hole size leak in it

Post by **jimbo1234567** » Mon Nov 16, 2009 10:13 pm

yes i got the cam cover brackets done at the same time and they had some pin hole sized leaks so i mixed up some araldite and put it on the welds then heated it up with a heatgun so the araldite went thin and flowed. as i was holding it at the same time i could control where the glue went.

Post by **davs4** » Mon Nov 16, 2009 10:44 pm

Aviation spec silicoset I use.

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B5 RS4 starts shaking when floored

B5 RS4 starts shaking when floored

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