I'm guessing you have the 4.2L V6?

The PCV elbow is back near the firewall and plugs into the valve body. It's a tiny L-shaped rubber piece that often has these small heater lines looped around it. Look at the lines that plug into the air ducts just upstream of the throttle body and trace it back to where I'm talking about and you'll see it. You can pull up on it and it will pop right out of the valve body.

I kind of doubt that's the cause but for this code it's best to take care of all the cheap easy things first such as the maf and pcv valve. My guess is your egr ports and clogged. If I were you I would buy a can of Seafoam and pour it into the brake booster vacuum line to clean out your intake manifold. There are lots of youtube videos out there on how to do this.

 

Which engine?

The PCV line on my 03 4.2 doesn't use an elbow, it runs from the valve cover to the side of the throttle body with a straight-in shot. The V8's have an elbow, just follow the line from the PCV valve around the back of the engine, there will be a 90 degree elbow where it connects to the back of the throttle body.

CB, you are talking about what's at the PCV valve itself, I'm talking about what's at the other end of the line that connects to it.

 

Hi Outlaw - PLEASE! Do NOT do this ^^^.

To clean the EGR and TB properly it needs to be removed from the engine, disassembled and hand-cleaned.

Seafoam is garbage - nothing more than Naptha and pale oil with some isopropyl alcohol (IPA)- Nothing listed in the MSDS will remove carbon - the smoke you see is the oil burning off - nice way to clog cats, foul plugs and booger O2's.

MSDS: http://seafoamsales.com/wp-content/u...seafoam_EN.pdf

Side note: according to the MSDS, this is the exact same formula that's also in their Trans Tune product. LMAO ! Can you imagine putting this useless, potentially dangerous Coon-Poo in yer Tranny????

Same Stuff, different can - Now, if THAT doesn't give you cause fer concern, I dunno what to tell ya. Are folks really that dumb? Nah ....

And if yer not careful folks have hydrolocked their engines doing this. WORST ADVICE EVER.

Just Search fer posts from Labnerd fer a full dissertation on the crap.

EDIT: there are a few in here: https://www.f150online.com/forums/4404711-post2.html

Another: https://www.f150online.com/forums/4592870-post9.html


TB cleaning:

https://www.f150online.com/forums/ar...ttle-body.html

http://www.fordf150.net/howto/throttlebodyclean.php

Perhaps someone will post up EGR port cleaning, lol ...

As fer Elbow pics - Jbrew has a bunch:

https://www.f150online.com/forums/3773772-post12.html

And more here: https://www.google.ca/search?rlz=1C1...EOsag#imgdii=_


Here - I'll page him fer yall ... hope this still works - haven't had to use if fer a while ....




MGD

 

Here is the procedure I used on my old 4.2L and it ultimately fixed the problem:

https://sites.google.com/site/fordf1...P0171P0174-Fix

My isolator bolts and gaskets were fine (although if you're going to do this you definitely want to replace them while you're at it, but my egr ports and IMRC valve ports were really gunked up. As for my seafoam suggestion, I only meant for the OP to give that a shot before using the procedure I linked to above. (BTW people have been using Seafoam and suggesting it on forums like these for many, many years and I've never seen such a negative reaction to it being suggested. Haha) It may not do a great job as an oil solvent but it won't blow your engine up.

 

Yes it will, if you hydrolock it!

If you want to PAY for a proper intake cleaning, take it to a shop that uses BG or Motorvac. The equipment to do this properly meters the chemicals.

 

I definitely respect y'alls opinion but I can't believe I've never heard that it could do that! When I had lean codes everyone and their grandpa was telling me to seafoam it. I know some people who Seafoam gas, oil, and intake regularly, like every other oil change. Welp, now I know!

 

Jbrew.....! The cape crusader.


It worked, my belt buckle began flashing.

 

What's your warm idle rpms ? That can tell yuh if you have a leak somewhere. If your rpms are over 750, then yes, you have a leak, - probably within the PCV system. The elbow in the back is usually the culprit. Your 2001 isn't the same as the elbow in this pic , -it's similar.

 

Yea, those posts are probably a waste ^^^^ , since we don't know what engine we're working on here. Still a mystery, going on page 5.

 

I would never put Seafoam in the oil, and I will only use it in the gas in a small engine with a carburetor. Keep it out of fuel injected vehicles and carbureted vehicles that have a catalytic converter.

If you want a gas additive that cleans injectors and helps with combustion chamber deposits, use Techron or Gumout with Regane. If you need intake tract cleaning, the SAFEST way is a BG or Motorvac job. I have this done with each spark plug change, the cost doesn't bother me.

 

Holy Smokes!!! Sorry guys! I finally got my Ninja running and was out enjoying the AZ weather. Yes I have the 4.2 6v engine.

 

I haven't read the article on Seafoam yet, but just about everybody I know uses it on their Bikes. I don't use it on my truck.

 

Jbrew I will have to check the idle rpms. It sounds normal when Idling just not something I have ever looked at. Could tell you right away the idle rpms on my Bike tho...lol

 

Sorry for all the posts . I was trying to get caught up and answer any questions that where out out there.

 

If you have the V6 and it's like my 03, the PCV valve is in the top of the passenger side valve cover at the back near the firewall. The line that comes off it runs forward, then into the passenger side of the throttle body. It doesn't have an elbow per se, but it does need to be inspected for cracks and mushy spots.