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Rough running when cool. S90-V90 1998

I think you may be right on, it might also be a good time to flush the coolant and replace the hoses and t-stat. I believe the FAQ has a diagnostic for the sensor, it needs to be taken out and placed in boiling water then the resistance measured. You could try that.

DanR '94 964 335,000 miles (101,000 on the new engine)
--
DanR






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