Where is PCV valve?

Mustang_289 · 01-24-2002, 07:43 AM

Trying to do process of elimination on my rough idling problem - new fuel filter, PCV valve etc.. I cannot seem to find the PCV valve on my 88GT stang with EFI - can somebody tell me where it's located? Don't have a full manual and I looked on the volve covers and didn't see it..

LOWKEY · 01-24-2002, 10:35 AM

It's in the lower intake manifold. Very back dead center.

Mustang_289 · 01-24-2002, 05:25 PM

Man - I was looking under the upper intake towards the back and didn't see it.. Can the PCV valve be replaced without taking the upper intake off?

whiterod · 01-24-2002, 05:32 PM

yes, it can. just find where the upper goes into the lower intake with your hand in the back of the intake. if you go straight down and towards the back you should be able to feel the pcv valve and the hose that plugs into it. It is a tight squezze between the intake and firewall but you can get it. you just have to work blind. good luck

chadtn2 · 01-24-2002, 05:32 PM

You don't have to take anything off to get to it. You just have to reach back behind the intake and pull it out.

That picture is on a Holley intake...But you can see the hole that it will plug into. That is on the firewall side of the engine. You just have to reach back behind the upper intake and yank it out...should have a large hose coming out of that hole and the PCV valve is attached. It sits in a little rubber grommet. (spelling?)

Chad

joe4speed · 01-25-2002, 03:33 AM

It's such a pain in the *** but as soon as you find it, it'll be a breeze to replace! get a flashlight and look back there you'll see it!

crazy5.0 · 01-25-2002, 12:41 PM

One the drivers side of the upper intake there are two vaccum hose and one is running to the front of the upper and one is running to the back of the lower intake. Follow the the hose that goes to the back to the lower intake. When you get the the end of the hose pull up and the pcv should pop right out of the lower intake. IF you can,take that hose off the side of the upper intake that goes to the pcv. There's a little screen that the pcv sits in that should be removed with some needle nose pilars and cleaned with carb cleaner.

01-24-2002, 07:43 AM	#1 (permalink)
Mustang_289 Registered Member Join Date: Sep 2001 Posts: 512	Where is PCV valve? Trying to do process of elimination on my rough idling problem - new fuel filter, PCV valve etc.. I cannot seem to find the PCV valve on my 88GT stang with EFI - can somebody tell me where it's located? Don't have a full manual and I looked on the volve covers and didn't see it..

01-24-2002, 10:35 AM	#2 (permalink)
LOWKEY Registered Member Join Date: Jan 2000 Location: greenvile, NC Posts: 161	It's in the lower intake manifold. Very back dead center. __________________ 89' Notch Stroked Poked & BLOWN low 11's and it goes around corners too Parts for Sale!! http://www.lowkey.stangnet.com/catalog.html

01-24-2002, 05:32 PM	#4 (permalink)
whiterod Registered Member Join Date: Sep 2001 Location: zachary, la Posts: 73	yes, it can. just find where the upper goes into the lower intake with your hand in the back of the intake. if you go straight down and towards the back you should be able to feel the pcv valve and the hose that plugs into it. It is a tight squezze between the intake and firewall but you can get it. you just have to work blind. good luck __________________ GT-40X(58cc)heads, cobra upper&lower, FMS 65mm TB, 75mm Bullet, 24# injectors, 190 lph fuel pump, moroso cold air intake, BBK 1 5/8 equal length headers, flowmaster cat back, 1.7 cobra rockers, crane 2031, T5Z gear box, centerforce dual friction, mcleod bullet proof bellhousing, 3.55 gears, hurst billet shifter with over 193,000 miles. thanks to all who contributed

01-24-2002, 05:32 PM	#5 (permalink)
chadtn2 Registered Member Join Date: May 2001 Location: Chattanooga, TN USA Posts: 29	You don't have to take anything off to get to it. You just have to reach back behind the intake and pull it out. That picture is on a Holley intake...But you can see the hole that it will plug into. That is on the firewall side of the engine. You just have to reach back behind the upper intake and yank it out...should have a large hose coming out of that hole and the PCV valve is attached. It sits in a little rubber grommet. (spelling?) Chad __________________ 78 Regal (stock) 89 Mustang GT 25th Anniversary (parts purchased, but not installed) 93 Mustang LX 5.0 ex-FHP car (modified) 02 Camaro Z28 35th Anniversary (light mods) http://members.aol.com/chadtn

01-25-2002, 03:33 AM	#6 (permalink)
joe4speed He said Member...heh, heh Join Date: Sep 1999 Location: Jupiter, Florida U.S.A. Posts: 3,716	It's such a pain in the * but as soon as you find it, it'll be a breeze to replace! get a flashlight and look back there you'll see it! __________________ Joe!** 1988 GT, 171,000 miles!!! 13.58@101mph Check out my listing! Click here! Or my website:www.joe4speed.com 99 Ninja ZX-6R (SOLD!!! 7/16/04 I miss it already! ) 1993 Olds Eighty Eight LSS 16.40@88.8mph Rice Haters Club #35 (Co-Owner, Administrator)

01-24-2002, 05:25 PM	#3 (permalink)
Mustang_289 Registered Member Join Date: Sep 2001 Posts: 512	Man - I was looking under the upper intake towards the back and didn't see it.. Can the PCV valve be replaced without taking the upper intake off?

01-25-2002, 12:41 PM	#7 (permalink)
crazy5.0 Registered Member Join Date: Nov 2001 Location: Mission Viejo,Ca Posts: 37	One the drivers side of the upper intake there are two vaccum hose and one is running to the front of the upper and one is running to the back of the lower intake. Follow the the hose that goes to the back to the lower intake. When you get the the end of the hose pull up and the pcv should pop right out of the lower intake. IF you can,take that hose off the side of the upper intake that goes to the pcv. There's a little screen that the pcv sits in that should be removed with some needle nose pilars and cleaned with carb cleaner. __________________ 89gt,3.27's,Auburn,tremec 3550,Steeda tri-ax,aluminum driveshaft,Asp underdrives,Flowmast er 3 chamber,March ram air,130 amp alternator,Koni yellow struts,Kyb shocks,Pirelli p-6000's,MM's lower control arms and full length subs

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