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Rough idle and fan runs wild after water outlet replaced!

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Hi everyone. I replaced my water outlet valve a week ago and afterwards I'm getting these codes and a cooling fan running high speed. Codes are as follows.....PO 134, PO 135, PO237, AND PO 097. I messed up and changed valve w/o disconnecting negative cable but have sense disconnected and discharged any energy before reconnecting. What an I missing still???? Thank you!
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Discussion Starter · #21 ·
Sorry. Lol. I am sad to report no change at all. I did everything as directed. This is incredibly frustrating. I have an appointment with my local chevy garage this Friday. I don't know what else to do. Ugh!
 

· The Nuclear Option
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5,867 Posts
Sorry. Lol. I am sad to report no change at all. I did everything as directed. This is incredibly frustrating. I have an appointment with my local chevy garage this Friday. I don't know what else to do. Ugh!
There's no shame in asking for help from someone more knowledgeable than you. I do it all the time. :LOL:
 

· Administrator
2014 LT program car, Pull Me Over Red, 1.4T Auto
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Just now did the exact same thing with the water outlet and I am having service stabilitrak I have drained the air out of the radiator multiple times still getting the flashing check engine light and service stabilitrak
You say multiple times, does that mean each time you did it more air came out? If so, continue as you have not completely purged the system. The alternative is you may have a blown head gasket forcing more into the system or something elese adding air back in.
 

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Did you get it figured out? I had the same problem for 3 weeks. Turns out I plugged the iat sensor into the o2 sensor plug and vise versa. Confused the hell out of me. I kept double checking my work and couldn't find it. Then I saw a picture of the o2 sensor plug in and realized what I had done. Runs great now.
 
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