2001 vw jetta 6cyl replaced the pre vcat oxygen sensor and stills runs rough

Asked by Feb 23, 2012 at 08:23 PM about the 2001 Volkswagen Jetta GLS VR6

Question type: Maintenance & Repair

car had code for pre cat bad, replaced in and car runs rough still.  took off neg battery
cable for 1 hour and engine light went out . start to drive and engine ligkt comes
back on and flashes only if i drive it not when sitting or rpms are up from an idle

2 Answers

5

I would pull out the spark plugs and check if they are fouled.

it was the plug wire

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