PCV, stands for positive crankcase ventilation. Since the piston rings cannot stop every bit of combustion gases from escaping past them into the crankcase(oil pan) area, there needs to be some way to safely vent that pressure, so that it wont build up and blow the seals out of the engine. The PCV valve does this, by applying a controlled amount of vacuum to give the combustion gases a way out and keep them from building up. EGR stands for exaust gas recirculation. The EGR valve opens at the appropriate time, usually on moderate acceleration to allow exaust gas to flow back into the combustion process through the intake manifold. It is a common myth that the reason is to "re-burn" exaust gas to use any remaining unburned fuel and improve gas mileage. Anybody who gives that explanation as to why they have an EGR valve, has no idea what he/she is talking about and probably should not be working on cars. Here is the real reason there is an EGR valve: Under certain conditions, esp when the engine is hot, fuel may actually burn too quickly, and thus not burn completely. In fact, spark knock or "ping" is caused by "pre-ignition detonation," the fuel actually ignites before the spark plug sparks. Pre-ignition detonation will cause an incomplete fuel burn, loss of power, bad gas mileage, and could even damage the engine internally. Under certain conditions you may want to slow the burn of the fuel, so that it is a more complete burn, and is at the right time. That is why you introduce exaust gases into the combustion process, to slow the fuel combustion just a little, so you can get a more complete burn, improve fuel efficiency, and reduce pre-ignition detonation. Here is a side point about pre-ignition detonation. Octane actually slows the burn process as well. That is how high octane fuels work, and why they reduce ping. The higher the octane, the slower and more completely the fuel burns. But with high octane fuels, you may want to consider where you are driving. If you are planning a trip to, or live in the mountains where the air is thinner, and there is less oxygen, you probably don't need a higher octane. The reason is that, with less oxygen, the combustion will be slowed in the engine already. Why slow it down any more? I hope this information helps.
location and replacement of pcv valve and egr valve on 2005 Ford Taurus se
PCV Valve is located on the Right Valve Cover.
Where is the pcv valve on 2007 dodge dakota 4.7 mag. Eng.and the egr valve also?
the pcv is located on the passenger side middle of the intake there is a hose making a 3 inch u turn the valve is on one end or the other, the egr is at the back center under the intake.
Stuck or bad PCV valve on the Valve Cover to the carb or throttle body. The other is the EGR valve. Most likely the PCV.
Contacted the dealer and the 02 does not have an egr valve The original question was "where is the PCV valve located? An EGR stands for "exhaust gas recirculation" which is different from a PCV valve "positive crank case ventilation". Each serves a unique and different function within the engine. Therefore the original question remains unanswered! daaaaa... The PCV valve is located on the back side of the valve cover. You will see the hose that the valve is connected to, running out from the back of the valve cover. The actual PCV valve is screwed into the valve cover, and the hose will have to be disconnected to access the valve.
on the back of the engine under the EGR valve and the hose can easily be traced from the pass side of the intake mannifold back to the pcv
They are both part of your emission system
What kind of valve? Exhaust valve? EGR valve? PCV valve?
upper right side back of the motor almost to the right and under the egr valve
To open and close a passage. Whether it is intake, exhaust, EGR, pcv, etc.
As you are looking under the hood the PCV valve is inline in hoses between the intake manifold tubes (Aluminum) right in front about center and the egr bolts onto the head (As you are looking at it) right side towards the back.
It might be that your pcv valve is plugged or the egr valve is sticking.
Pull upward on the hose that the PCV valve is in. The PCV valve will pull out of the hose. The PCV valve is located in the valve cover.
If the engine is smothe at lower speeds it probably is the tcc in the torque convertor. The egr and pcv both are on the upper engine behind the throtle body on your 3.8 engine.
Fuel filter.Fuel filter.
You're right - not always!For example, as per the "Related Question" below, the pcv valve on a 3.0 DOHC is down below the egr / upper intake manifold area.From the "Related Question" for the DOHC pcv valve, there are links to a variety of the model years and engine combinations covering a large number of Taurus / Sables.
The PCV valve should be under the intake manifold- pretty tough to get to w/o actually taking off the manifold. The EGR valve should be on the intake manifold itself. The O2 sensor should be threaded into the exhaust manifold(id by wire attached to it). Good Luck;)
Disconnect the PCV valve tube from the PCV valve.Disconnect the PCV valve electrical connector if it has one.Turn the PCV valve counterclockwise to remove from the valve cover.To install, reverse the removal procedure.
The EGR valve is located at the front of the h22a4 engine. The EGR valve is right beside of the front of the EGR valve.
The EGR valve is usually located on the top of the valve cover...it is usually a plastic part that connects to the valve cover with a rubber seal...there is an emissions hose leading away from it...the PCV valve is also located on the valve cover in a similar fashion, though it is a lot smaller...