How do you replace a PCV valve on 1998 Nissan Altima?

Answer 1

Just did it.

It's front of the IACV on the intake manifold attached to the breather separator.

Take off the horn

I had to take off the Power Steering pump hoses, both of them. A mess for sure before you can get a plug into the hose from the reservoir. You will also have replace the copper washers on the high pressure side.

Loosen the power steering pump loose by taking off it's top bracket and loosing the bottom one (you'll need a 14mm swivel socket to get that one) .

Take sensor wire off of the pump. You will need to that from underneath

Slide the pump so you take off the inlet goose neck off the pump (watch for that O ring that seals it when you take it off and that is aligned when you put it back on).

Then you can move the pump out of the way.

Take off all the IACV assembly plugs.

Then you have drain about a gallon of coolant out because you have to take out the engine cooling sensor (deep well 19 mm socket)

The breather separator should be in view. The PCV is attached to it pointed toward the inside of the engine. I had to take off the separator with a 10mm 1/4 inch socket and 6 inch extension.

Once you have it loose. You should be able to take off the spring clamp the secures PCV to the hose and CAREFULLY pulling off. Pull the separator/PCV out and change the PCV like normal. I cleaned out the separator with throttle body cleaner.

Then do it all in reverse. Remember with the pump hose you have to put new copper seals on the high pressure side and get the GOOSENECK INLET O RING BACK ON STRAIGHT..

Now for my story. Not only was the PCV bad , the hose was cracked so I had to remove the IACV assembly. Not a big deal 4 10mm bolts, getting a new gasket was a problem. Then with a lot of cussing using 3 different kinds of needle nose pliers I finally got the old hose off. You will see what I mean.

Anyway it runs a lot better now. I will fork over the money the next time. There is a reason why a mechanic charges you some bucks for it.

Hope I gave you a clue and the best of luck. It's not your dad's PCV change on this particular vehicle.

If you are really good and lucky here is a YouTube on it. It's a 2001 that he working on, but it's the same place http://www.youtube.com/watch?v=WWUv_s6XJ_I&feature=fvst