View Full Version : PCV Question?
04-20-2008, 09:17 PM
I know this was covered in the old forum, but I can't remember what was all said about it. I have an ATX and my idle is at 1100 rpm and when I pinch the vacuum line going from the pcv to the intake my idle drops to about what it should be... I was wondering how I go about fixing this. I heard something about fuel lines replacing the vacuum lines but cant remember much else. Any help will be greatly appreciated.
04-20-2008, 09:32 PM
It is probably the elbow on the valve. Remove it and check it for holes. There is another elbow at the intake manni.
04-21-2008, 11:30 AM
At 1100 RPMs, you are way over the stock idle. The idle air motor can't compensate.
This means a massive vacuum leak, or a stuck idle air control.
04-21-2008, 09:51 PM
my pcv elbows were perfectly ok, it has still been at about 1000 rpm since it has warmed up a little bit... no codes thrown except a ses for a deleted cat, but from what i remember the idle was up since i bought the car like a year ago, i just didn't know much about cars so never thought it was a problem. I'm in a few auto classes at school do you think any of the scanners or testers would show me what is going on with it?
might want to move this to problems... i thought it was just something from the pcv elbows that everyone had troubles with but could be something more.
it sounds like the extra air coming in is going through the intake cuz it makes that whistle type noise like when u first rev it, if that helps any
04-21-2008, 10:36 PM
Take the intake off and clean the throttle bore and plate/butterfly really well with solvent and rag.
If that doesn't fix it, take the idle air control motor off of the back of the black intake [below th e throttle body in back] and clean it carefully. Two bolts with 8mm heads hold it on.
There are vacuum line all over that have to be perfect, and the intake as well. You can't have any leaks. Trace the whole line from the PCV valve.
04-22-2008, 06:18 AM
Whistle type noise use indicates a vacuum leak. Also check you intake for air leaks.
04-22-2008, 12:43 PM
A whistle noise usually indicates a happy mechanic.
04-22-2008, 04:12 PM
04-22-2008, 09:24 PM
Alright i will try all of this tomorrow and see how it goes
04-29-2008, 07:08 PM
Any recommendations where to look for a vacuum line diagram?
04-30-2008, 12:36 AM
Under the hood.
04-30-2008, 04:41 AM
Duh - thanks. Obviously late when I started working on it!
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