03 Jetta 1.8T: P0300, P0303, P0304, P0301, P0302, P0106

dexterwy · **Joined:** Thu Apr 23, 2009 7:01 pm **Posts:** 2

Hi all,

All 4 cylinders misfired.

The engine failed to start at first. When I tried it again while pressing the throttle a little bit, it started very roughly and cannot idle. I have just changed the fuel injector coil for all 4 cylinders a couple of weeks ago.

Thank you.

Sponsored Links · **Joined:** 29 Jun 2004 08:12 pm **Posts:** N/A

dexterwy · **Joined:** Thu Apr 23, 2009 7:01 pm **Posts:** 2

The problem has been solved:

Since the vehicle gives P0106 code, there must be problems in the MAP, MAF sensor part. And according to some info on line, the MAF (mass air flow) sensor is a infamously bad part of VW cars. So I took it down and cleaned it with isopropyl-acohol in a Ziplock bag, and put it back on. It now works like a charm again.

03 Jetta 1.8T: P0300, P0303, P0304, P0301, P0302, P0106

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