rough running G60

06-09-2004, 11:02 AM
90 G60 Corrado runs good until it warms up then it starts running rough. barely idles. changed O2 sensor and temp. sensor and it ran fine for a few days then went back to running rough. nothing comes up when codes are checked. any ideas or help is greatly appreciated. i don't have much hair left to pull out.

12-03-2004, 10:01 PM
Check the Idle Stabilizer Valve (ISV). It may be loose, if so, tighten it. If it seems alright, you might go ahead and replace it. Although I think VW charges a fortune for them

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