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Fixed the issue!!!! FTW!!!!

A fellow member on here had the EXACT problem and EXACT year and model car as me and he just fixed his problem the other day. Turns out that a grommet on a 3 way that connects the PCV and such was missing so it was just sucking air and not being sealed in the intake, well a trip to the parts store and got a new PCV for the heck of it and couple grommets and now the car idles PERFECTLY!

Oh and the check engine light went off! FTW!!!

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Rest In Peace mother.

January 22, 1955 - February 14, 2013

http://www.stevemeadedesigns.com/board/user/35351-megrch/

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There will always be a little bit of oil in your intake, it's blowby and a little bit of oil from the crankcase that gets sucked into the intake via your PCV... unless you run a catch can instead. If there's lot though then it can be a sign of a messed up PCV.

And yeah, vaccuum leak would be giving you a CEL.

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10.x volts fo' life!

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There will always be a little bit of oil in your intake, it's blowby and a little bit of oil from the crankcase that gets sucked into the intake via your PCV... unless you run a catch can instead. If there's lot though then it can be a sign of a messed up PCV.

And yeah, vaccuum leak would be giving you a CEL.

Thanks boon, yes there was a bit but not a lot, the car is running smooth and perfectly now after a few days. After I fixed this issue the car just wasn't acting right with hesitating and kinda wanting to stall but after being on the highway for a few days seems to have cleared that all up!

Rest In Peace mother.

January 22, 1955 - February 14, 2013

http://www.stevemeadedesigns.com/board/user/35351-megrch/

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  • 4 weeks later...

There will always be a little bit of oil in your intake, it's blowby and a little bit of oil from the crankcase that gets sucked into the intake via your PCV... unless you run a catch can instead. If there's lot though then it can be a sign of a messed up PCV.

And yeah, vaccuum leak would be giving you a CEL.

Thanks boon, yes there was a bit but not a lot, the car is running smooth and perfectly now after a few days. After I fixed this issue the car just wasn't acting right with hesitating and kinda wanting to stall but after being on the highway for a few days seems to have cleared that all up!

Also to further expand on this issue which cost me a lot of money before I figured it out. Sometime the whole pcv hose assembly need to be replaced! Especially on older expeditions

2-9518H

Saz4500

Sundown 100.4

Infinity Kappa Components

Mechman 270 Alt

2 XSPower D3100's

2 Runs 1/0

14 Cubes tuned to 30hz

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Explain what happened to you. I like to take in any info I can

99 expedition having the same issues you described. Shitty idle like it was trying to choke itself out, Losing gas mileage. Did a scan and got bank 1 and 2 lean codes. Started by Changing all my O2 sensors and still no luck. Then did a pain in the ass tune up which is no joke on the 5.4 in the expo's! It was during this I found 1 dry rotted vac line. Replaced that and problem got slightly better. So replaced the fuel filter next with no luck. I stumbled across a bit of info a little to late online saying with these problems always start at the vac lines! So I got the $35 pcv hose assembly and my expedition has never run better! Very common problem in Expeditions as far as I have read. And Im sure other cars with high mileage! Either way I did a lot of stuff I would have needed to any way. Just not all in 2 weeks!

2-9518H

Saz4500

Sundown 100.4

Infinity Kappa Components

Mechman 270 Alt

2 XSPower D3100's

2 Runs 1/0

14 Cubes tuned to 30hz

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