Thread: P0421 Code
View Single Post
Old 08-30-2010, 03:28 PM   #15
Chazberry
Master Member
Chazberry is a splendid one to beholdChazberry is a splendid one to beholdChazberry is a splendid one to beholdChazberry is a splendid one to beholdChazberry is a splendid one to beholdChazberry is a splendid one to beholdChazberry is a splendid one to behold
 
Chazberry's Avatar
 
Join Date: Feb 2005
Posts: 7,067

2003 VUE 3.0L
2007 VUE 3.5L
Default Re: P0421 Code

Quote:
Originally Posted by snicknc View Post
I found this thread in the forum: 151713 (sorry can't post URL's yet, I guess)
Dontcha hate it when threads end "unresolved"!
http://www.saturnfans.com/forums/sho...d.php?t=151713

Quote:
Originally Posted by snicknc View Post
As far as I know, neither has been replaced, but as I'll be pulling the intake anyway to do a compression check, I guess I'll go ahead and swap out the thermostat.
Be careful with the T'stat extension pipe - some folks have had the attachment tab break off. Do a search for tips on that job.

Sounds plausible about coolant affecting the cat, but strange that you're not losing coolant - maybe it only takes a tiny bit (?). Typically on this engine, people get coolant in the oil due to a leak in the Coolant/Oil Heat Exchanger - which you will see when you get the intake off.

REWARD EXCELLENCE!

Add to Chazberry's Reputation
Rate the quality of this post and help Chazberry reputation points. Click the reputation button near the bottom left corner of this message box. Thank you!
Chazberry is offline   Reply With Quote