throttle body vaccuum hose
03-27-2012, 03:26 PM
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throttle body vaccuum hose Hey guys, I dont know if this is the right place but I had a question. Can the vaccuum line that goes from the valve cover to just beyond the throttle body screw with the idle? I ask this because my idle has been weird lately, it acts as if the throttle is sticking and sometimes when I give it some gas the rpms will stay constant, or "idle" higher than usual (anywhere from like 900-1400 rpms). This lasts for a few seconds and then it goes back down to normal. Usually goes away after I drive the car for a few minutes but hasnt as of lately.
I thought I heard an air leak in the original vaccuum line so I went to autozone to get a new one but I think the guy sold me regular hose line, from what I understand vaccuum line is different right? Anyway, seems like the issue started around the time i switched them. Any ideas?
I thought I heard an air leak in the original vaccuum line so I went to autozone to get a new one but I think the guy sold me regular hose line, from what I understand vaccuum line is different right? Anyway, seems like the issue started around the time i switched them. Any ideas?
03-27-2012, 03:32 PM
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I changed the waterpump that same weekend too, I dont think that would have anything to do with the idle issue but I figured I'd let you guys know just in case
03-29-2012, 03:39 PM
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That hose draws fresh air from in front of the TB blade, so disconnecting it would not cause a vacuum leak at the TB (though, if not plugged, it would allow unmetered air into the system since this is after the MAF), but it would cause a small vaccum leak in the PCV system (this line is the fresh air source for the PCV system) if left open on the valve cover side. Either way, the leak should not be big enough to hold your idle that high, assuming there is still a PCV valve in place. But if you replaced the line with a new hose and connected it to both ends then you don't have anything to worry about in this regard.
You may have a vacuum leak in the PCV line though, which you can trace from where it connects to the intake on the passenger side to all the way around the back of the engine.
You may have a vacuum leak in the PCV line though, which you can trace from where it connects to the intake on the passenger side to all the way around the back of the engine.
03-30-2012, 12:29 AM
#5
Any hose (of the right size) will work for vac, in fact hose intended just for vac line is usually the cheapest quality.
You should check the idle air screw, it's the cylinder thing attached to the intake (driver's side) right behind the throttle. It's really easy to remove, and see if it's gunked up with carbon.
You should check the idle air screw, it's the cylinder thing attached to the intake (driver's side) right behind the throttle. It's really easy to remove, and see if it's gunked up with carbon.
