Cadillac STS Forum - 2005 through 2012 Discussion, Yay! PO174 fixed in Past Cadillac Vehicle Discussion; Turns out, when I changed the air filter weekend before last, I didn't get the hose clamp on the intake ...
- 06-04-12 01:11 PM #1Cadillac Owners Enthusiast
- Automobile(s): 2005 STS N*, 1SF, 144K mi.
- Join Date
- Apr 2011
- Fort Worth
Yay! PO174 fixed
Turns out, when I changed the air filter weekend before last, I didn't get the hose clamp on the intake hose connected to the intake manifold quite tight enough.
Tip: use an 8mm or 5/16" nutdriver or socket to tighten it, not a flathead screwdriver.
Edit: Well, it stayed off until I stopped for about 10 minutes on the way home, then the CEL returned. I put my code reader on it a short time after that, when I arrived home, and whadda know...no codes.
I'm carrying the reader in the console for the time being. If nothing else, as a threat to the engine computer.
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