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A Word of warning about the PCV valves.

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Old 08-30-2010, 09:47 PM
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A Word of warning about the PCV valves.

I posted about this in the V10 forum, but I wanted to let everyone here know to check their PCV valve.

I had my mileage dropping real bad earlier this year. I changed the plugs, and they had some deposits. Not bad, but some. My mileage and power came straight back.

Over the next few months, the mileage again sent slowly bad. I was to the point of 8 MPG higway at 65 mph.

I decided to do the plugs again, and they were heavily encrusted with ash deposits. I suspected light amounts of oil, and checked the PCV valve. It had gone the way of the wind.

No codes showed. My PCV is the type with a wire and electrical sensor on it.

After the new plugs and the PCV, It runs better than it ever has. No more very slight roughness. Lots more power, and the mileage is right back.


Check your PCV and plugs if your mileage is dropping!!!


Bion
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Old 08-30-2010, 09:52 PM
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Nice find, Bion. I bet that will help a lot of people.
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Old 08-30-2010, 11:04 PM
TYZ78F150 TYZ78F150 is offline
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I went to autozone one day to get oil and filter for my 5.4, and had the kid look up one for it and he said they don't have one? I haven't tried again, but will now. Thanks
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Old 08-30-2010, 11:13 PM
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BTW, for the 2004 and 2005 owners, The PCV Valve is the blue plastic tube affair sticking out of the middle of the passenger side valve cover.

To get the hose off, You need to reach around it and there is a yellow tab sticking out. catch it with your fingernail and pull it away sideways about 1/4 inch from the connector. Do this while you are pulling them apart lightly.

To get the PCV valve out, it is sort of camlocked into the valve cover. Grab it firmly and twist counter clockwise about half a turn. It will come right out.


I wanted to post this since it is so different from the 2000-2003 models, and it took a bit for me to figure out without buggering up the connector or anything else.

You can get them from Rockauto or your dealer. Napa, Autozone, Advanced, and Pep Boys all said the same thing. No reference for it. Even when I gave them the ford part number off the side.

Here is a pick of the valve:

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Old 08-30-2010, 11:41 PM
Shepherd2 Shepherd2 is offline
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That's just crazy.I worked at a dealership for over 10 years and never even knew those things existed. If they can find a way to make something so simple so complicated ...
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Old 08-31-2010, 01:49 AM
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Someone "rep" Bion for me please. I gotta spread it around...
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Old 08-31-2010, 04:17 AM
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Someone "rep" Bion for me please. I gotta spread it around...
Done.
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Old 08-31-2010, 12:50 PM
TYZ78F150 TYZ78F150 is offline
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Thanks alot housedad. I changed all my plugs about 2k ago. I think I'll go ahead and change the pcv, it does act like it has a very slight miss, especially on start up.
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Old 08-31-2010, 02:11 PM
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So what is the wire for?

Perry
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Old 08-31-2010, 03:39 PM
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Someone "rep" Bion for me please. I gotta spread it around...
Done!

This should be a sticky in the V10 forum, I'll raise it to Art...
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Old 08-31-2010, 04:02 PM
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That's bizarre, I never knew they made a PCV valve like that.
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Old 08-31-2010, 05:52 PM
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Wow. Thanks for the rep points, guys.

I'm just glad to share to prevent someone else from having the problems.
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Old 08-31-2010, 06:49 PM
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Went to the ford dealer today to buy a PCV. (2003 V10). Apparently they used two types, heated VS non heated. Mine has the heated type (there are small coolant lines going to it) and they had to order it.
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Old 08-31-2010, 07:10 PM
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Where is the one for the 2000 V-10? Is it also in the valve cover?

Bob
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Old 08-31-2010, 07:49 PM
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Quote:
Originally Posted by housedad View Post
I posted about this in the V10 forum, but I wanted to let everyone here know to check their PCV valve.

I had my mileage dropping real bad earlier this year. I changed the plugs, and they had some deposits. Not bad, but some. My mileage and power came straight back.

Over the next few months, the mileage again sent slowly bad. I was to the point of 8 MPG higway at 65 mph.

I decided to do the plugs again, and they were heavily encrusted with ash deposits. I suspected light amounts of oil, and checked the PCV valve. It had gone the way of the wind.

No codes showed. My PCV is the type with a wire and electrical sensor on it.

After the new plugs and the PCV, It runs better than it ever has. No more very slight roughness. Lots more power, and the mileage is right back.


Check your PCV and plugs if your mileage is dropping!!!


Bion
Just wondering if you noticed a difference in oil consumption?
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