Question about 2001 Volkswagen Passat
I have a 2002 Passat Wagon, V6 with 65000 miles. I get the codes P300, P301, P306, P351. I changed plugs, this solved the problem for 200 miles. I put new plug wires and new coil pack, did not fix. Put old wires and coil pack back on, car ran OK for short period of time. I am now looking for vacuum line leak. Please help.
A flashing check engine light is a critical indicator. That usually means that something went wrong that will damage the emission control system... and that is usually an ignition issue. First off, the OEM plug your car calls for is an NGK irridium... NOT BOSCH and not anything with more than 1 prong. Those NGKs are like 2 bucks and they are the proper plug. Make sure you have these plugs and make sure they are gapped to .028. Next, my suggestion is put all the new stuff on again. Drive it to autozone and have them delete all the codes. Drive it around until the check engine light comes on again, then immediately go back and read the codes. The ECU is smart enough to know which cylinder is misfiring. On these cars, I think they have three banks of two... meaning one "coil" inside the coil pack operates two of the cylinders. So if you get multiple misfires, it's the coil. If you get one misfire it's probably an individual plug wire or plug. Good luck.
Posted on Jul 15, 2009
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Posted on Jan 02, 2017
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