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Runs rough after car wash


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2006 Legacy GT 85k miles - stock. Last 6 mos. +/-, engine runs VERY rough after automatic car wash. 1st couple times thought it was bad coincidence, car looks great - runs like... Now, I can get it to misfire w/in 15 mins of full wash.

Hot out, cold out, summer, winter - no difference.

 

CEI Codes set all related to Cam position sensors - Cyl 1 & 3. (Had Cam sensor for 2 & 4 R&R under warranty pre 60k mi. - They (Dealer Svc.) said it was the Mobil1 Oil ?!?!? :confused: - another day for that!

Had corroded coil replaced on #3. Had cam sensor for 1 & 3 replaced OEM.

Problem still occurs :mad:.

 

Disconnected Harness @ Mass block in engine compartment - no corrosion there - treated w/ cleaner deoxidizer.

Tore apart passenger floor & inspected all harnesses & computer area for water leakage/corrosion - nothing.

 

Please NOTE: The problem "goes away" & then manifests itself again after automatic carwash - almost instantly when using underbody spray.

 

Ideas?

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New to this forum. If you would be so kind to help with some acronyms Mr. Robinson...

OCValve? Is that Overhead Cam?

Noog? - No idea

 

Trying to make sense of some other threads.

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