|
| Search | Car Forums | Gallery | Articles | Helper | Air Dried Fresh Beef Dog Food | IgorSushko.com | Corporate |
|
#1
11-11-2008, 11:25 PM
|
|||
|
|||
|
2003 VW Passat Codes
Three weeks ago, my Passat started running really rough. I put the code reader on it and got codes P0304,P0305. Everything I read on the internet pointed to the coilpack. I've since replaced the coilpack, all ignition wires, and all spark plugs. Guess what? Now I have even more codes. Now I have codes P0301,P0303,P0304,P0305,P0306. Why are 5 of 6 cylinders now misfiring?
I have the v6 engine. 
|
|
#2
11-12-2008, 12:14 AM
|
|||
|
|||
|
Re: 2003 VW Passat Codes
I took out the new plugs and new wires. I put the old ones back, so now the only thing new is the coilpack. NO CODES!!
The plugs were Bosch platinum. Would this cause the codes?
|
|
#3
11-16-2008, 09:35 AM
|
||||
|
||||
|
Re: 2003 VW Passat Codes
either
A- the wires were on incorrectly b- the poor quality bosch plugs you installed caused the misfire codes I only put NGK plugs in any car I work on accept gm I put in acdelco
__________________
ASE Master certified and VW certified. Just here to help all check engine light codes ------> http://www.automotiveforums.com/vbul...d.php?t=328630
|
|
#4
11-17-2008, 05:29 PM
|
|||
|
|||
|
Re: 2003 VW Passat Codes
With everything now working correctly, I decided to do an experiment. I pulled out one old plug, and replaced with the Bosch plug. The codes returned! So, new plug out, old plug in.......no code.
I never would have thought the Bosch plug would cause the VW computer to reject it, but it does. BTW, changing the coil pack was EASY, less than 5 minutes. I couldn't believe it.
|
|
#5
11-19-2008, 10:22 PM
|
||||
|
||||
|
Re: 2003 VW Passat Codes
bosch makes poor quality everything
__________________
ASE Master certified and VW certified. Just here to help all check engine light codes ------> http://www.automotiveforums.com/vbul...d.php?t=328630
|
|
 |
POST REPLY TO THIS THREAD |
 |
|
|
