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Thread: My Aunt's 2008 Saturn Vue

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    Smile My Aunt's 2008 Saturn Vue

    I'll post pics of the actual car some day. For now, this is the 3.6L VVT in my Aunt's Saturn Vue. She is the 2nd owner of this car. I have been performing the maintenance since she got it last year; and I'm doing my best to pick up where the 1st owners left off. I've done 3 oil changes; the last one being the Royal Purple oil change; which I will be switching out real soon. Installed seat covers and floor mats when she was doing her Lyft and Uber gig. Check engine light sidelined her several months ago. I scanned the OBDII and it had a multiple misfire code. After looking the engine over, I determined that the coils were fairly crusty and it probably had the original plugs; which it did. Also discovered that the pcv system is a tube running from the lower intake to the zip tube right in front of the throttle body. I don't see a screen or a valve; perhaps it's built into the block. As such, I decided to install the air/oil separator and the reject throttle body bracket that was intended to be used for the CV. This past weekend, I replaced the plugs and coils; and installed the air/oil separator. I cleaned the zip tube and the throttle body of oil (there was quite a bit). No more check engine (yay!). I test drove the car and it acted fine, but I don't drive that car regularly, so I don't know if anything changed.

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    Killed my 31 year old Craftsman compressor blowing debris out of the spark plug wells. I had a few plugs with cracks in them; are the cracks large enough to pass a charge and cause a misfire?

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    anything that looks like that I'd call highly suspect. I've never seen plugs crack there before. The dark stains are also strange. The hex looks clean, so unless that is combustion gas oozing up through the plug I have no explanation for that either. Unless you cleaned the hex part up extremely well at least, otherwise it might just be oil stains from a leaky VC gasket. Enough oil in the plug well can cause misfires.

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    No oil or moisture in the plug wells; just dry debris. Perhaps the stains are from combustion gases as you said. A dark thought crossed my mind whilst typing this; perhaps the plugs were recycled from another vehicle that had liquid in the plug wells? It wouldn't shock me as my Aunt said the mechanic wanted to charge her $200 to reset the maintenance light. Which was a very easy thing to do as I discovered from YouTube.

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    Are there any recalls on the 3.6 engine?
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    My aunt came over late last night, so I was unable to do anything but check the air/oil separator and change out the cabin filter. The air/oil separator had a tiny amount of oil in it; so I know it's working. I will keep observing it until its half full.

    The cabin filter............well see for yourself. This is a 2008 model year Vue

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    So, my Aunt's Vue is/has (been) throwing a P0430 code for a while now. This is a below threshold result for Bank 2 cat(s). I plotted data on Sunday to compare between Bank 1, which is supposedly normal vs Bank 2 which is having trouble. The only thing I get is that Bank 2 cat is reading LOW values. So I am trying to interpret that data to see if that cat is bad or if it's something else.

    Also noticed that the seam in the air/oil separator is a little moist. No puddle of oil underneath, or anything running down the catch can; just a wet seam. I will monitor that and maybe open up the throttle body to see if oil is getting in there.

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