99 explorer xlt v8

The pcv is located under the intake manifold and sucks fumes out of the lifter valley. Unfortunately, the intake manifold has to come off to service it.

This is a picture of the 4.0sohc engine upper intake the pcv valve is located at the back center of the engine just below this intake.

PCV Basics
PCV stands for Positive Crankcase Ventilation.
All car engines have a PCV valve and it is located on top of the motor's valve cover. There is a vacuum line attached to it. It pulls out of the valve cover and if you shake it, you should hear a marble knocking inside it. If you shake it and don't hear anything, it's bad. It costs less than 5 bucks to replace.


Location
* 4.0L is located in the valve cover near the brake booster
* 5.0L is located behind the intake manifold (engine rear)

NOTE-Most people that are asking actually want to know not only where is it but also how do you get at it to replace it.

Often answers say that you need to dismantle the intake manifold to get to it.
This is a major and unnecessary approach, for example, on the 2000 Explorer with a 5.0 V8

Below is an additional suggestion on how to access a PCV valve on an 2000 5.0 V8 Explorer

The PCV valve is on the rear of the intake manifold (the intake manifold is also on top of the crankcase so PCV valve has direct access to crankcase)

To replace valve and/or its bushing:

• Disconnect one battery terminal, unbolt/unplug the PCM cable (Powertrain Control Module connector located on the firewall) and firewall ground connection, depress underneath tab and slide the main cable connector (located to the right of PCM connector) off its mount.

• Move the cables to the right and now you can easily reach down behind the intake manifold to the PCV valve

• Service valve and its bushing if needed, reverse actions to reassemble

Hope this helped (remember comment and rated this). Good luck.

Look under the intake manifold on the backside of the throttle body. If its turbocharged, you will have to pull the intercooler out to get to it.

the PCV valve is is typically located in the valve cover near the brake booster-4.0L pushrod V6. On a 5.0L V8 engines, the PCV valve is located at the back of the intake manifold.

it located behind intake manifold, the intake manifold must be removed to get to valve, once you remove intake you will see pcv valve, dumb place for it i know,good luck.

What throws everybody is that the pcv valve does not insert into the valve cover as it does most cars. This one on the 1999 explorer is located directly behind or in back of the engine on the top of the manifold. You can spot this easier if you take off the covering(four screws) on manifold then you will see two hoses that connect to a plastic pcv valve (that's what threw me). this should help.

The PCV valve for a 5.0L is located below the upper intake manifold in the rear. It is locate in the lower intake manifold in the rear right below the upper intake manifold. It is really hard to see but if you get a mirror you can probably see it.

Normally located on top of the valve cover.