New MK4 owner needing some advice

**Mk4DUB** · 05-12-2010, 11:14 AM

I recently purchased a 02 mk4 SE 1.6 with 100k as a daily, Ive serviced the car changing air filter, cleaning air flow meter and throttle body, oil and oil filter, new coolant and checked plugs which are bosch super spark which look in good order, although i have a problem the car drives fine but on idle the engine is running rough the revs aren't hunting but the motor seems to shake as if its missing, checked for obvious vacuum leaks and still don't know what could be causing it?

Any help would be much appreciated. thanks

**balkanac** · 05-12-2010, 06:57 PM

how did you clean the AFM? those are really fragile, you might have broken it. Best to get it scanned

Welcome!!

**Mk4DUB** · 05-12-2010, 07:40 PM

Just sprayed it with contact cleaner no physical contact, what do you mean 'get it scanned' sorry im new to vw's

**JustCruisn** · 06-12-2010, 09:15 AM

Originally Posted by Mk4DUB

Just sprayed it with contact cleaner no physical contact, what do you mean 'get it scanned' sorry im new to vw's

Scanned- means to have it plugged into a VW diagnostics computer to scan the onboard computer to read faults.
The car is fairly smart - sensors and any components which are controlled by the ECU can record faults. These faults can be read by special software to let the service guys know what is broken.
This system can run tests as well.

So get you car off to a VW specialist and get it sorted.