Not all that difficult, just a few and some time in the garage. I like wrenching so that is not a problem. But it is cheap aka free and it helps me "eliminate" potential issues. Besides from what I am told my 3" intake and the Edge don't play nice together....I'm sure I won't miss the ~2HP it was giving me

 

- I run my stock cold air intake since it didn't make a difference in 0-80 times running my 3". The only difference is , I don't have the sucking noise under the hood when I nail it.

I sure do like the looks of the Edge, but I would have to go with the XCal 2 for a canned power tune.

 

Does th 4.6 use the elbow F65Z-6762-BB. I went to Ford today and My PVC system is just on hose #6c324 on the left side from the PVC to the back of the TB. On the right side there is a hose and two elbows that are#6758 they go to the TB right under the IAC.( The numbers are from the Ford dealers parts dept computer) They didnt have either one I had them order both for me. The one on the right side changes idle when I really spray carb cleaner on It.I hope thats it.

 

Yea , the elbow closest to the IAC is usually the problem. Some of these systems are little different in set up, but still, that elbow has been the most common issue in the past (for lean codes.)

 

Well I am throwing in the towel and heading to the stealership this afternoon to see what they say is the problem. P0171 & P0174 are the codes, I'll let you guys know what they find that I couldn't.

 

You never found the problem ? I suppose you've checked everything by now , I'll read the thread again - Did you go over every hose and gasket w/propane. That really works.

 

I never did try propane, I've never done it nor seen it done, so I didn't really feel comfortable "learning" on this. Things I did try:
-Sprayed every known vacuum line I could with carb clean, no change
-Replaced fuel filter, no change
-Cleaned MAF, no change,
-Checked PCV elbow, 3 times, no holes
-Cleaned out TB and all ports, no change
-Checked intake for any leak points past MAF, none found


It might end up being the intake gaskets themselves. I'd rather just not throw a bunch of money into replacement parts. I'll have the dealer use their tools, see what they find, then I'll replace it. Basically I need to do this quick rather than spend the time hunting it out myself over the next couple of weeks. Maybe it is something easy like the DPFE or maybe it is more involved, low fuel pressure perhaps.. I have to take the truck in for emissions testing and I need to make sure it is code free!

 

Did you check the fuel pressure and regulator by chance? It could be an upper intake gasket. Idunno , the chances aren't that good for both lower intake gaskets going at once.

Check your IAT grommet as well..

 

IAT grommet was good as well, no leaks there either, at least none that I could tell. I did not check the fuel pressure or the regulator, those things, for the time being are out of my basic diagnostic skill. Like I said, unfortunately time is running out and I just need the problem fixed quickly. My fault for taking to o much time really. I don't necessarily plan on handing the dealer a bunch of money to fix the problem, I more or less just want to know what the problem is, then I will determine whether or not I want to fix it. The service manager is a good friend from high school, so I am not to worried about getting the honest truth and usually a discounted price.

 

Yea , that's good that you know him. Tell them everything you've done. At a 800 RPM idle , I'm thinking you have a leak up top somewhere , but then again, it doesn't have to be - That was pretty contradicting

But like Bluegrass posted in the beginning of this thread. If the tech takes the time going thru the tables, trims and history, they'll find the problem..

Well, Good Luck and post back what they find.

 

Well I'm back, the quote $1030. I walked. They said it was the lower intake leaking and that it needed a lower intake and gaskets due to corrosion found from pinpoint tests. $411 for the intake, $40 something for gaskets, $20 for coolant and then 5.5 hours of labor. They couldn't tell me for sure the intake was cracked, they just said it was a good possibility. Unfortunately my friend from high school had the owner lurking over his shoulder so he couldn't cut me a break. I told them I would have to go back and think it over, besides they didn't have the parts there. Now my question to you is, is it just gaskets or do these intakes crack over time. I have about 125k on the odo. Mostly used for commuting, Nothing hard on the motor other than towing a boat. If the gaskets are really no big deal to change out, I'll do them myself, just curious about a cracked intake. and why there would be lean codes on both banks.

 

What motor do you have ? Plastic intake ehh. Well , I'll tell where mine went - right up front by the water jacket and the corrosion pitted both heads . I didn't have a problem when I replaced mine , I just decided to do it a couple years ago. But the gaskets where pretty much shot @ the front.

I'm surprised you have both codes. Personally , the job is a little time consuming , but pretty much straight forward. If you can change the plugs - you can do this.

 

Nailed it right on the head jbrew, well that's at least where the tech pointed it out as being the problem area. I have the 5.4 So is it just gaskets then or do I need the $400 intake as well? Impossible to tell? Is there a better aftermarket version out there? Is this a Haynes manual type job, or can I find a diagram/exploded view on the net somewhere?


Scene of the crime, or grime...they said that the oil build up there was where the leak was.

 

If it is cracked - I would fix it personally - Well, it depends where it was cracked. You could hit up a salvage yard for that or car-part.com if needed.

It is plastic right ? 99's were aluminum, 01's were plastic, I'm not sure about the 2000 ?

Haynes or Chilton's will have the procedure. I have up to 99 on the computer in the shop if you need it.

I had to repair my heads w/aluminum filler - yours might not be that bad.

 

Thanks jbrew. You thinking my heads are going to be bad too?? They never mentioned that, probably another charge to tack on later when they get you in a bind.