🔧 Enhance Engine Performance with Motorcraft EV258 Positive Crankcase Ventilation Valve Review

I was having issues with emissions and decided to replace this pup and it was quick and easy to replace. There were no problems with the part.

The car idled very high, unstable. The PCV valve was clogged. He did his job and very well. The car idles well and runs just as quietly as when you bought it. Good product.

Easily fits 2003 Mercury Grand Marquis. The exchange took less than 2 minutes. It took me longer to assemble the pliers, put on the gloves and open the hood. I don't know how it works as I haven't started the car yet! (Update) 4 days have passed and it works as it should. Got to. It's blue, yo!

Note the original is black so if you can't find it in the engine bay, here's why. Worked great on my expedition. I had to use pliers/wrench to get the old one out because they kind of snap. Inserting the new one was easy enough that I was able to do it by hand, but you may need a wrench to grab the square piece. Be careful what you use for this - be kind to him.

Replaces my 2004 Lincoln Town Car. Something that is too often overlooked but can cause serious problems when it malfunctions, I always replace my PCV valve every year or so. While you can find a cheaper aftermarket replacement, I've always encountered smooth running issues due to slight differences in vacuum performance when opening and closing valves. As a result, I always stick with Motorcaft when it comes to parts like the PCV valve.