can a bad pcv valve make the car run rough

10

Asked by Steve Aug 23, 2016 at 12:09 PM about the 2004 Mazda Tribute DX V6

Question type: Maintenance & Repair

04 tribute is run rough at start up and sounds like a fan blade ticking coming from under intake manifold

3 Answers
10

Steve answered 8 years ago

That's the weird thing no engine check light has come on you would think their would be

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KenF answered 8 years ago

Check engine lights and the OBD system are geared towards emissions related problems, and not for all engine/trans problems. There are a host of mechanical problems that will never show up as a DTC. I'd get it to a mechanic and see what is ticking. As to your question, yes a bad PCV or elbow can cause rough running/idle.

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