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RWD - High HC Readings - to the Volvo 700-900 FAQ!

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High HC Readings - to the Volvo 700-900 FAQ! 900 1994

As CB says with vacuum leaks.

https://www.brickboard.com/FAQ/700-900/EnginePerformanceSymptoms.htm#EmissionControlProblemsHighHCCOorNOx

May be more elsewhere in the FAQ.

As it is a 1994 940 Turbo (from the factory?) you can check the OBD.

https://www.brickboard.com/FAQ/700-900/EnginePerformanceSymptoms.htm#EmissionControlProblemsHighHCCOorNOx

You are in California, so, you may have factory installed EGR monitored and controlled by the ignition ECU.

And, well, I dunno write now.

Hope that halps.

MacDud.
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New High HC Readings [900][1994]
posted by  Townshend Act  on Mon May 6 22:10 CST 2019 >

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