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running rough S90-V90

Just tought of another thing-under the air filter in the air box is a valve that works on heat and if fails will keep the car running on hot air from the engine-if thats happened it can also cook you mass air meter and cause havok.
Myself and others here have unhooked this gizmo and fixed the air box to only allow cold air in at all times and works just fine-with out the hot air valve.
Poolman






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