Knocking

[JPO]

Hi, I have a 03 Passat 1.8 stock except it is Uped. I had an intercooler leak for a while (since before it was chipped a few months ago) that I just had fixed. Since the intercooler leak was repaired the car is more responsive but is now knocking under acceleration. I use 91 octane and tried different stations (only two tanks since repair). Any ideas?

[Khyron]

Re: Knocking

You need to vag log it and see if the knock sensors are out of their range. Sounds very bad though because Calgary is at high altitude - you should be able to run 89 or even 87 without exceeding what the car can autoadjust. I'd switch the chip back out first though.

[JPO]

Re: Knocking

Thanks, though I don't like the sound of that. I would really appreciate any assistance from someone with a Vag-Com.

[Khyron]

Re: Knocking

Check the sticky post for someone that has one in your area.

[JPO]

Re: Knocking

Thanks I will. Any one have any idea why this would happen after the intercooler was fixed? The car never knocked before that...

[JPO]

Re: Knocking

Well pretty much no more knocking. I have run a few tanks of gas through it since the problem began and it seems much better now. It started knocking after the intercooler was fixed but at that same time I filled up at Safeway in Crowfoot and have not since. Could it be their gas sucks?

[Bullfrog]

Re: Knocking

The 1.8t Passats Are Infamous For Having Oil Sludging Issues In The Pick Up Also...