#PCV Valve Location
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Driver School Candidate
Joined: Dec 2015
Posts: 10
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From: Virginia
#PCV Valve Location
I'm trying to knock out some quick maintenance items on a recently purchased GX. Does anyone know where the PCV valve is located? I looked all around the valve covers and can't seem to find it. Thanks!
Thread Starter
Driver School Candidate
Joined: Dec 2015
Posts: 10
Likes: 2
From: Virginia
CL Community Team
Joined: Mar 2017
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From: USA
This is a pretty good overview
https://axleaddict.com/auto-repair/H...PCV-valve-test
Realistically probably doesn't need to be changed until 100K miles or more. I ordered one for around $10 and plan to swap mine out. I'm just OC maintenance-wise. :-) I think I saw posted you use a 23MM deep well socket. It's just plastic so it should extract fairly easily. It could cause oil leaks if it ever gets plugged but you would probably be seeing a CEL as well.
https://axleaddict.com/auto-repair/H...PCV-valve-test
Realistically probably doesn't need to be changed until 100K miles or more. I ordered one for around $10 and plan to swap mine out. I'm just OC maintenance-wise. :-) I think I saw posted you use a 23MM deep well socket. It's just plastic so it should extract fairly easily. It could cause oil leaks if it ever gets plugged but you would probably be seeing a CEL as well.
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Intermediate
Joined: Feb 2015
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From: Northwest
Even if you do not have any symptoms it is plastic and it ages. If you wait too long and you need to remove it, a brittle plastic part may break and pieces may fall inside the block. If this happens your engine is at risk of a complete failure (unlikely though). Usually it costs $10-$20, it is wise to replace it once you hit the 8-10 years mark regardless.
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CL Community Team
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Even if you do not have any symptoms it is plastic and it ages. If you wait too long and you need to remove it, a brittle plastic part may break and pieces may fall inside the block. If this happens your engine is at risk of a complete failure (unlikely though). Usually it costs $10-$20, it is wise to replace it once you hit the 8-10 years mark regardless.
CL Community Team
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From: USA
EDIT: FSM does showing intake manifold being removed.
I was looking at this last night and was gonna change it but after taking a few parts out I backed out. I believe recommended procedure is to pull the top air plenum off but a few Tundra reports just getting the foam out and pull the outer skirt layer off the hose. The tearing of the foam is what gave me pause. I got it back together and can't really tell anything is abnormal down there. I can see why air plenum piece is recommended as I can't see a way to get the foam out as-is without tearing. I'll revisit this another day. The valve is quite a ways down in there so you may want to have some long reach needle nose pliers to extract it out.
Closest video I have found is this and it only really shows where it is at. Engine parts are not fully the same either. This might be a 5.7L and far more room with fewer engine pieces within engine in video versus the 4.6L we have.
I was looking at this last night and was gonna change it but after taking a few parts out I backed out. I believe recommended procedure is to pull the top air plenum off but a few Tundra reports just getting the foam out and pull the outer skirt layer off the hose. The tearing of the foam is what gave me pause. I got it back together and can't really tell anything is abnormal down there. I can see why air plenum piece is recommended as I can't see a way to get the foam out as-is without tearing. I'll revisit this another day. The valve is quite a ways down in there so you may want to have some long reach needle nose pliers to extract it out.
Closest video I have found is this and it only really shows where it is at. Engine parts are not fully the same either. This might be a 5.7L and far more room with fewer engine pieces within engine in video versus the 4.6L we have.
Last edited by Acrad; Oct 7, 2018 at 12:21 PM.
Driver
Joined: Sep 2019
Posts: 54
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From: Texas
Did anyone end up doing this? I’ve got a 2013 with 90k on it so not super worried about it since I don’t think it’s in the manual. I need to have my SAP recall done so I was thinking I might drop off a PCV with it and have the dealer put it on.
Intermediate
Joined: Mar 2015
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From: Colorado
I just did it on a V6 RAV4. Does that count? 
It's a metal valve on the RAV, so I just cleaned it up and reinstalled.
The air plenum did need to come out, along with the throttle body and part of the intake hose. Took a couple hours, but I was also doing spark plugs and a coil pack.
It's a metal valve on the RAV, so I just cleaned it up and reinstalled.The air plenum did need to come out, along with the throttle body and part of the intake hose. Took a couple hours, but I was also doing spark plugs and a coil pack.