I recently replaced my PCV “valve” on my 2005. Some of the info on the PCV wasn’t clear so hopefully this might clear things up for someone. I’m sure some people already know this so this is for those who do not.
The 2005-2006 used a different PCV valve than the 1997-2004 (the rear most valve). Basically, the engine vacuum pulls air from the filtered air side, through the engine, and then into the intake to be burned. When you decide to replace the grommets usually the plastic fittings break and have to be replaced. But, you cannot buy the specific 2005-2006 valves any more. Luckily, you don’t need to.
Here is what the 2005-2006 valve looks like.
It appears to be large at the bottom. But, a regular elbow like the front will not work as it will pull in too much air.
If you look inside, you’ll see a tiny hole. That’s what’s restricting the vacuum and only pulling a little vs a lot.
If you try to order a PCV valve for a 2005-2006 you will only get the front elbow which will NOT work to replace the 2005-2006 unique version. It’ll work just fine on the front but will NOT work on the valve nearest the firewall.
But, if you order/purchase a PCV valve for a 1997-2004 you’ll get this one (this is a Dorman but there are other brands out there many of which are cheaper).
Note the small orifice hole in the bottom of it. Same size as the 2005-2006 just in a different location.
The new fitting has a larger outside diameter so you will need the larger grommet. Same grommet as the front now.
Install it and it’ll look like this
You won’t have that cool flange that the 2005-2006 engine had. So, you won’t be able to impress your friends who don’t own a 2005-2006 model. But the best part is, it’ll work just fine.
If you, by some miracle, happen to get the neat 2005-2006 PCV valve out without breaking it, you are lucky. You can order this grommet since it has a smaller interior diameter and reuse your old valve (and impress your friends).
https://www.amazon.com/gp/aw/d/B00HS6SF2Y?tag=wranglerorg-20
Now that you have nice new grommets and valves/elbows in your 2005-2006 Jeep 4.0, go out and enjoy driving it.
The 2005-2006 used a different PCV valve than the 1997-2004 (the rear most valve). Basically, the engine vacuum pulls air from the filtered air side, through the engine, and then into the intake to be burned. When you decide to replace the grommets usually the plastic fittings break and have to be replaced. But, you cannot buy the specific 2005-2006 valves any more. Luckily, you don’t need to.
Here is what the 2005-2006 valve looks like.
It appears to be large at the bottom. But, a regular elbow like the front will not work as it will pull in too much air.
If you look inside, you’ll see a tiny hole. That’s what’s restricting the vacuum and only pulling a little vs a lot.
If you try to order a PCV valve for a 2005-2006 you will only get the front elbow which will NOT work to replace the 2005-2006 unique version. It’ll work just fine on the front but will NOT work on the valve nearest the firewall.
But, if you order/purchase a PCV valve for a 1997-2004 you’ll get this one (this is a Dorman but there are other brands out there many of which are cheaper).
Note the small orifice hole in the bottom of it. Same size as the 2005-2006 just in a different location.
The new fitting has a larger outside diameter so you will need the larger grommet. Same grommet as the front now.
Install it and it’ll look like this
You won’t have that cool flange that the 2005-2006 engine had. So, you won’t be able to impress your friends who don’t own a 2005-2006 model. But the best part is, it’ll work just fine.
If you, by some miracle, happen to get the neat 2005-2006 PCV valve out without breaking it, you are lucky. You can order this grommet since it has a smaller interior diameter and reuse your old valve (and impress your friends).
https://www.amazon.com/gp/aw/d/B00HS6SF2Y?tag=wranglerorg-20
Now that you have nice new grommets and valves/elbows in your 2005-2006 Jeep 4.0, go out and enjoy driving it.
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.) I’m using the exact parts you’ve shown, and all is good so far. BUT… After putting the grommets in, I’m have a really, really, REALLY hard time getting the elbows into the grommets. WD40, soapy water, oil, nothing seems to help. Is there something I’m missing? Should I be using heat, cold, stretching the grommets, (a hammer, ha?) anything like that? I’m open to suggestions! Thanks!
