Sense its a GT I am going to assume it has a 3100 engine and the PCV is under the intake. You can replce it but unless you have over 150000 miles on it you probably don't need to. They hardly ever give any problems on those cars. If I am not right about the engine let me know and i`ll give you the you need. Ray
On my '99 Grand Prix GTP SuperCharged. + Standing in front center of the car + Remove the plastic cover + On TOP, the back right hand corner, there is a small flat plate with 2 small bolts on it. + Remove 2 bolts, lift up Plate and Gasket + Remove Spring + Remove PCV with O-ring + Put O-ring on new PCV and put PCV back in hole + Put Spring back in hole on top of PCV + Replace Gasket and Plate + Tighten down the 2 bolts + Put Plastic Cover back on and tighten nut. I would change it(PCV) out every time I changed the oil. PCV's only cost about $2.50 and keeps your car motor from building up too much pressure and keeps your car from getting oil leaks. Also I personally use Mobil 1 oil. Now drive it like you stole it! Dexter
Every Grand Prix GT I have ever seen had the 3800 engine in it, usually supercharged, that's why its called a GT. The standard run-of-the-mill SE models have the standard 3100 engine in them. BUT,...if you buy a car new, DIRECT FROM THE FACTORY, then a person could order their car with either engine! If you got the money to burn, a person could have General Motors drop a V8 in their SE or GT model
There is a great write-up with pics on how to change the PCV valve at: http://macgp.clubgp.com/howto/pcv/pcv.html Hope this helps. G
The PCV valve is located under the MAP sensor on a 1990 Pontiac Grand Prix. The MAP sensor is in the upper plenum.
In the valve cover at the right front corner
The PCV valve on a GTP is inside of the supercharger housing. For detailed pics and instructions see the following web page. http://macgp.clubgp.com/howto/pcv/pcv.html . "G"
The PCV is a small metal cylinder the is plugged into the top of the valve cover and has a 1/2" coming out the other end.
It is the Positive Crankcase Ventilation (PCV) valve.
For pics and instructions for the Grand Prix GT check out. http://macgp.clubgp.com/howto/engine/pcv/gt/pcv.html . "G" It is in the intake behind the throttle boly.
between throtle body and firewall
The PCV valve is located in the valve cover
Yes, a person can get a diagram of the PCV valve location in a 1989-1999 Mercury Grand Marquis. This diagram would be located in the maintenance books found in auto part stores.
depending on which motor you have 2.0 in the valve cover 2.5 at the rear of the drivers valve cover
The PCV valve is found in the valve cover on the passenger side.
on a 1998 Pontiac gan am ,they do not have a pcv valve.
The PCV valve on a 1999 Astro should be located on top of the valve cover. It plugs in and can be easily replaced.
Under hood, center, upper engine area, mounted in front valve cover
it is on the rear valve cover.very hard to get to..The pcv valve is not visible on a 3800 series II engine, which I presume you have in your Grand Prix, because it is located under the MAP sensor. You will find that at the front of the engine, where the serpentine belt is located. Unplug the connector to the MAP sensor and then you will have to unclip the sensor itself. You will then see pcv valve underneath.3For a 3800 normally asperated check out the following website for pics and instructions. http://www.scacgp.com/mods/gt_pcv.htm."G"
Try this link for location and procedure to change:http://macgp.clubgp.com/howto/engine/pcv/gt/pcv.htmlHope this helps!Slim
The PCV valve for a 1999 Regal 3.8 is located on the top of the valve cover. The valve pulls out to replace it.
4.0L does not have a PCV valve, it uses an orifice in the rear of the valve cover.
The PCV valve on a 1999 Bravada is located near the oil filter. It is on the passenger side of the engine compartment.
PCV Valve LocationI just changed mines recently. Remove the top cover. It should be located on the left side (passenger side) next to the fuse box. It has a plastic covering that reads sensor. Look for the wiring. That's correct if its a Grand Prix GT. If you have a Grand prix GTP supercharged engine, the PCV valve is under the black plastic engine cover which comes off by removing the oil filler plastic tube and lifting up and forward. Look to the back right corner of the intake manifold when standing in front of the car and you will see a small metal cover with two bolts. Inside is a gasket, a spring, and the PCV valve. Be careful and keep it clean.
The 1999 Chevy Geo Metro 1.0 liter engine PCV valve can be found on top of the engine. The PCV valve will be behind the air cleaner housing.
The PCV valve on a 1999 GMC Jimmy is located on top of the engine, on the left side. It connects the valve cover to the intake manifold.