Maybe if you power wash it, you'll be able to find It

 

yea i know, finally hunting season is over and i can go wash it. but seriously is that it or no.

 

I know my 02 F150's pcv is actually in the intake manifold, so its a PITA to replace. I think the 2000 4.2L the PCV is on the passenger side of the engine, way back on the valve cover, It is a little larger of a hose than the one in the pic you posted. good luck

 

ol thanks ill have to check again.

 

The PCV valve is on the passenger side back valve cover (1999 4.2). Check that area, and follow the hose to the front of the throttle body. There is an elbow PCV hose thats tucked under there. If I had a camera I'd take you a pic. Before changing mine, you could hear a noticable sucking sound. Even when I sprayed carb cleaner in the attempts to find the vac leak, the idle would not change. It's tucked up there pretty well.

 

o thanks i will have to check on thursday, i have school mon-wed so i cant check it.

 

in my case the grommet around the pcv valve needed to be replaced..(2.99 part from autozone) if you give the pcv valve a tug, it should fit in the grommet firmly.... if it slides out easily then replace it... while you're replacing the grommet you might as well replace the pcv valve as well...it's about 5.00 and will make your truck idle smoother

 

well disregard that last post i just checked under the hood and i found it. i am just going to replace whole thing valve, gromets, hose , elbow and all. just to be safe.

 

1. PCV Valve Elbows on the tube there is 2 elbows near the pcv itself and one under the throttle body. They rot. Cause 0171 0172 0173 0174 as well as misfire codes.

2. Lean codes can also be caused by carbon deposit buildup on the inside of the lower intake. Each lower intake port has an EGR internal valve like thing. It gets built up and causes misfires and lean codes.

3. O2 Sensors do go bad. The upper two are the ones that matter. If you are going to replace them, replace the two on the exhaust manifold. The other two are more for sensing heat. If the rear two need replaced, chances are your cat's are toast and so are the first two.

4. If you have access to an Actron 9150 or 9145 Scanner, it will test all of your sensors including the O2's. Will also show you if injectors are working properly and sending the right signals to the PCM. It checks all of your major sensors. You could have just a bad sensor as well.

5. I will also share with I've seen vacuum leaks on the vacuum harness. The 4.2 has a vacuum harness and there is a red line that goes to the fuel pressure regulator sometimes will get a whole burned in it. Depends if you have the plastic or metal intake.

If you need more help, let me know. I can help you. J

 

well guys i decided to take my truck the shop today. i don't have the time to fix it myself. work is starting to pick up. i told the guy what code i had, but he might want to scan it again and then fix it. i also told him to do a tune up, replace plugs, plug wires and the fuel filter. is there anything else i should tell him to replace. i just changed the oil and tranny fluid a few weeks ago.

 

I just changed my transmission fluid (including torque converter drain). I started the engine after adding 5 qts. of fluid to pump it through. After the job was done I got a P0174 code. I reset the code and it hasn't come back yet. I am thinking that the starting of the engine with low fluid might have caused the system to "see" a low vaccuum or something. Anyway, this is just my observation and experience. The 0174 hasn't come back yet.

 

the guy just called me and told me the problem. turns out there is 2 vacum leaks. one is the intake gasket in the back drivers side. the other is the egr valve. so to fix these problems and change the fuel filter, plugs and wires. its gonna cost my right at $600. if the egr valve doesn't need replacing it will be around $500. what do yall think.

 

That is not it. It's on the other side. Here is a link of a pic on my truck that shows the PCV valve. The asterisks below mean v 6 f 1 5 0 . c o m.
http://www.***********/forums/showthread.php?t=8556

 

woohoo. just got my truck back. it idles ALOT smoother than before. it didn't cost as much b/c he didn't have to replace the EGR valve. sorry for this post im just glad to have my truck back. i missed it the whole week.

lata

 

Did he tell you exactly what was done to repair it?

Feedback after a sucessful repair is always good. Keeps everyone else up to date on what causes certain problems.

Steve