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Old 04-07-2015, 06:06 PM   #57 (permalink)
jeffcat
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Join Date: Oct 2013
Location: Ohio
Posts: 19

SuperVX - '94 Honda Civic VX
90 day: 52.17 mpg (US)
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Quote:
Originally Posted by WD40 View Post
jeffcat, you are correct.
There should only be the lower PCV valve the upper is simply an elbow, remove the valve cut off the bottom remove the guts replace as an elbow.
Thank you. I actually just did it this morning and I have to make a 2.5 hour trip this week, so I'll see if it did much in terms of fuel economy, although I'm on a small sample size. I was hoping it would eliminate my low idle problems, but unfortunately it didn't. I didn't notice much difference in driveability, but I haven't had it up to 55+mph yet. I took the IACV off and cleaned it out, put a new air and fuel filter in, cleaned the PCV, and it's still low around 400rpm(IACV still works). I went through the service manual procedure of turning the idle up on the throttle body and went out about 3/5th a turn and it helped a slight bit(450rpmish), but not much. I'm not quite sure what the deal is there, so I'll see what happens after I take the intake off and give a cleaning.
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