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Discussion Starter #1
My 2003 CTS is idling very rough and misfiring... I've looked around for any vacuum leaks and saw that this appears to be missing a tube possible. This is located along the firewall closer to the drivers side next to the power steering reservoir. Let me know if you can tell me if a tube/hose goes into this and where does the other end go to?


car part.jpg
 

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2002 Eldorado Biarritz
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That is the IMRC/switchover valve. That nipple is supposed to be connected to a long vacuum line coming from the front of the engine that tees off to the coolant bypass solenoid, the IMT solenoid, and the vacuum reservoir. Hope that helps.
 

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Discussion Starter #5
Thank you Tlorenzen but I had already picked up a new line for it. I appreciate your help and offer.
 
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