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Crankcases and PCV Valves
Basically, a crankcase is the casing for the crankshaft of an internal combustion engine. Combustion produces pressure within the crankcase. Positive crankcase ventilation (PCV) valves regulate the vapor pressure within the engine and recycle it back into the engine.
1,344 Questions
Where is the location of the PCV Valve on a 1994 Trans Am 5.7 ltr LT1 engine?
The PCV valve on a 1994 LT1 is located on the driverside of the intake manifold, in the middle of the intake manifold. It has a 180 degree hose attaching it to a port in the intake manifold. Eric L
Pcv valve location on 2002 explorer v6 xlt?
The PCV valve should be installed in the top of the valve cover on the driver's side of the engine , towards the firewall.
Where is the PCV valve on a 1996 Nissan 300ZX?
Pcv valve is on the bottom sides of the intake plenum. Look under it by both strut tower locations and you should see two lower hoses that run right thru it. It screws right under the plenum...
Where is the PCV valve located on a 2000 Ford Escort ZX2?
I have a 1999 ZX2 and had a hard time finding the PCV valve as well, but here's your answer: Remove the heat shield from the exhaust manifold. (This is the front of the engine, clse to the radiator.) You should see an adjacent hose going into the engine. Lightly pull on the hose and it will come off, revealing your PCV valve. I have a 2000 ZX2 and find the PVC valve on the right side of the heat shield on front of engine. It was not necessary to remove the heat shield in order to access the PVC valve. Simply remove the hose gently or you will break the adjacent hose. If you should damage the hose the part number is PA6 and will need to acquire through a Ford dealership.
Where is the PCV valve on 2000 2001 v6 DOHC 24 valve Taurus?
To help locate the hose, it will be underneath the throttle body and will have a grey hose clamp. The hose will also form an "L". It also turns to a plastic hose too, if that helps. So... rubber "L" hose to plastic hose back to rubber fitting, then the pcv valve.
Another description...The pcv valve is on the driver's side of the car, in the top-middle of the engine under a wiring harness and close to the fuel rail. Naturally, Ford put this next to a lower radiator hose entering the engine block too. In all, it's in the worst spot ever for a pcv valve, if you ask me.
To access this, you really need to remove the whole plastic intake and throttle body. Maybe a professional mechanic could do it without doing this, but I'd have to see it to believe it.
One more thing I forgot to add. The pcv valve for this is made by Motorcraft (part number EV-243 or part number EV-268) EV-268 has a metal hose wrapped around the part. I was told that on some Ford minivans, the metal tube is for coolant to run through.... I guess to keep the valve cool. Anyway, you won't need this for your Taurus. Simply bend it slightly and pull it off. The valve, you'll notice, has square-like sides. This is to allow you to put a pair of pliers on it to remove the old and insert the new. The part has to be turned about a quarter turn counter-clockwise to remove and the opposite to install. You'll also see that it has a rubber o-ring on it to seal it in the block. You won't be able to reach it well with just your fingers, unless you were to remove the wiring harness and fuel rail. So... simply use a pair of pliers to reach under the wiring harness and grasp the square-sides of the valve and twist it counter-clockwise to remove. I didn't need much pressure at all to remove it, although I read online where one guy's cracked when he did it. He claimed it was in there so long that the piece was seized in the opening. Mine simply twisted out and I twisted the new back in.
AnswerIt is below the egr valve close to the intake manifold below the intake air sensor, there is a tube running to it from the engine to recirculate exhaust air with fresh air, there is a clamp holding it to the air intake that you need pliers to remove, then you need to turn counter-clockwise 90 degrees to remove, do the reverse to install. to make it easier to access remove the upper intake. The pcv valve is not visible, however, you can identify it by the 3" inch long rubber hose that connects to the steel line running into the bottom of the intake. I have the part and am going to replace it soon, although Ford really makes it difficult to remove it - pcv valve is located just under the throttle body. remove air cleaner assembly from throttle body and you will see a u shaped hose running horizontally. Answer:My 2000 Mercury Sable with a 24V DOHC 3L Duratec tripped the diagnostic trouble codes P0171 and P0174 (system too lean banks 1 and 2). I pulled off the 2 rubber elbow boots on the vacuum lines leading to the air intake covers and they were deteriorated (ripped apart as I removed them). Although they were 90 degree angle boots, I replaced them with 45 degree boots I found on a Taurus at the junk yard. The "check engine light" came on again on the 3rd trip. Ran my finger under the barely visible rubber elbow on the vacuum hose under the housing containing the MAF sensor (I presume the hose leads to the PCV valve) and felt a split in the rubber. To avoid the hassle of taking off the air intake manifold, I wrapped that section of hose tightly with electrical tape. I erased the codes with my scanner and haven't had a problem since. My next steps would have been to check the EGR valve and sensor, DPFE sensor, PCV valve, and air intake manifold gasket.under the air intake on the drivers side
follow the pcv valve tube from under the air intake manifold
down to the left
i found mine and removed it with a 22mm deep well socket
after removing the wiring loom plastic screw and the plastic shield about the throttle cable to gain hand access
the pcv valve turns 180 degrees cc wise and pulls out
good luck
2003 Taurus SES w/DOHC 3.0L V6I was doing a tune up and had to remove the upper intake manifold to access the coil and rear bank of plugs. Since I had the upper intake off, I changed the PCV valve. However, it may be possible to do it without taking the upper intake manifold off.The PCV valve is located underneath the injector wiring harness and next to the coolant hose. All of this stuff is underneath the upper intake manifold/throttle body assembly. The PCV valve is mounted horizontally and sticks out toward the driver side front wheel. It has a straight rubber hose about 3" long that completely covers the PCV valve so that you cannot tell what it is. That 3" rubber hose connects to a black plastic tube that runs out of the gallery underneath the injector wiring harness and turns toward the throttle body. There, the black plastic tube connects to a molded rubber elbow that is clamped to the underside of the throttle body.
That molded elbow and black plastic tube are distinctive and will lead you straight to the PCV valve. The black plastic tube easily pulls out of the molded rubber elbow as it is not clamped. Follow the black plastic tube under the gallery and just pull the straight rubber tube that it attaches to. It will easily slide off the PCV valve as it is not clamped there either. At this point you will be holding the black plastic/straight rubber tube assembly in your hand and the PCV valve will be clearly visible (at least it was with the upper intake off).
The PCV valve is sufficiently tucked into the pocket formed by the injector wiring harness and coolant hose that you can't really get pliers in to turn it 1/4 turn CCW for removal. The injector wiring harness is fairly rigid and you cannot move it out of the way without removing the injectors. However, it is not as bad as it sounds. The PCV valve has a square flange on it that is a perfect fit for a 7/8" deep well socket. Put that socket on an extension and it makes a nifty PCV removal/install tool. You may need to use a ratchet handle to turn the old PCV valve out if yours is stuck, but mine came out easily. I stuck the new PCV valve into the socket and inserted it by hand into the recess and was able to give it a 1/4 turn CW with just my hand turning the extension. I slid the black tube/straight rubber hose assembly back on with no issue and finished my tune up.
If you attempt this without removing the upper intake, then I assume you will have more difficulty, but it may not be that bad. The 7/8" socket and extension work excellent as a PCV removal/install tool, so it may work well enough to allow the PCV to be replaced without removing the upper intake. It's at least worth a try.
AnswerIt is not external on the 8 cylinder SHO. If you have the "P" Vin engine (32 valve) then you will not find a positive crankcase ventilation valve on it. Ford does not recommend servicing it.Where is the PCV valve on a 2005 ford explorer?
on a v6 it is located on the backside of the left valve cover on a v8 it is on top of the left valve cover
Where is the pcv valve located on a 1988 Cadillac DeVille?
Directly behind the power steering pump. There is a 5/8th hose, pull up from valve cover.
How often should the PCV valve be replaced?
* It should be specified in the owners manual, and if not, they are relatively cheap ($3-$8) so you could do it when you do a tune up. Check it by popping it off with the engine off (it is located on the top of the engine usually and connected by a small hose) and shake it. It should rattle. If not, it is clogged and needs to be replaced. Here are more opinions and answers from FAQ Farmers: * PCV valves are probably the easiest and cheapest part of keeping the engining running smoothly. They should be changed annually or at least every 2 years. * How often? NEVER. Trade secret among mechanics is take it off every 10-15k miles and soak it in gasoline or other solvent to remove all the gummy oil deposits left by venting the crankcase.All it is is a check valve that is activated by the amount of vacuum a motor creates. I've never bought a new PCV valve for any of the cars I've owned since I started driving 35 year ago. Back then of course,you could work on your car unlike today.Lift the hood and you can't even see the road where as before,you could climb inside under the hood and still have enough room to work.Now you HAVE to bring your car back to the dealer to have it worked on because of all the sensors,valves,computer modules etc etc.People...it's a scam! Save your money on a new PCV valve and just use a little gas from your lawn mower to clean the one you have. * The pcv should be replaced every 35,000 miles. Just cleaning the pcv is not enough. The part that fails on the pcv is the spring and cleaning it will do nothing. This part is cheap and can have a significant impact of gas mileage and on how smooth the car runs. Not the place to be cheap.
Where is the PCV valve located on an 2001 Impala 3.8L engine?
------------------------------------------------------------ The PCV is right above the pullies on the front of the engine. There is a sensor right above it (MAF sensor?) Get the kit from the dealer: Part #17113515 What is the function of the PVC valve ? Does it control or block out NOx vapors which pass through the exhaust system and affect the tests results of the auto Emissions Inspection program? it's the MAP sensor the pcv's function is to clear crankcase vapors that blow by the piston rings HC not NOx. the EGR recirculates exhaust gases to cool combustion chamber temps and reduce NOx emissions.
Where is the PCV valve on a 1994 Chevy Lumina with the 3.1 liter engine?
The PCV valve is located in the rear valve cover next to the firewall. It can be reached and changed without rotating the engine forward although it is a bit of a struggle.
Where is PCV for 1999 olds intrigue located?
oN the 3.5 L V6 model It appeares to be under the silver casing on the F. Right side as you are looking at it. I havnt attempted to pull it out yet but it looks like one thogh.
Where is the PCV valve located on a 2003 Nissan Frontier PU supercharged?
the PCV on your 2003 Frontier S/C is on the passangers side Rocker cover(valve cover)
Why inlet valve is bigger than exhaust valve?
because the inlet valve has to hold back pressure from the gas pump where as the exhaust valve has nothing to hold back but the compression of the ignited fuel and such a force is applied at the face of the valve. the face of the valve is in the cylinder so the force is a push not a pull meaning a bigger exhaust valve is not needed because the valve dose not have to fight back to keep it's self closed.
Where is PCV valve on 98 jetta?
Take a look at the following Flickr photo. This is a '97, but the PCV is located in the same spot on the '98.
http://www.flickr.com/photos/roy_vanegas/2921211470/in/set-72157607808188158/
How do you fix a stripped spark plug hole on a 96 geo tracker?
Repair kit availale at most auto parts stores
Where is the PCV Valve on a 2003 Dodge Durango?
The PCV valve is located in the valve cover, on the 4.7L it is in the side of the oil filler housing.
Where is the PCV valve located on a 2003 Toyota Matrix?
The PCV valve is usually on top of one of the valve covers.
Where is the PCV Valve on the 2000 Camry 4 cylinder engine?
The pcv valve is located in the valve cover on the top of the motor. It has a black hose connecting it to the intake manifold.
Check engine ligt is in reference to an emissions problem. Your struggles may or may not have any relation to it.
Is the PVC valve on a 1998 Chevrolet Prizm where you add freon?
The PCV,Positive Crankcase Ventilation Valve is to keep down crankcase pressure by way of venting the engine. Freon is the refrigerant that allows an air conditioner to cool properly. There is not any connection between the two.
Why won't My truck will not turn over when I turn the key?
Your truck will not turn over when the key is turned if the battery is dead, the ignition switch has failed, or the starter is bad. All can be readily repaired at a local mechanic or dealership.
it is a connecting rod that has seized on the crank / broke and went thru the block
