geosnooker2000
Well-Known Member
- Joined
- March 29, 2007
- Messages
- 298
- Reaction score
- 5
- City, State
- Somerville TN
- Year, Model & Trim Level
- '10 Eddie Bauer V8 4x4
So, thanks to all the help here, I got my front diff swapped and new front axles installed. Drives great and is quiet again, so that was the problem. But now...
I went in to autozone to get that stupid CEL checked out to see why it still thought I had a cyl.#8 misfire when I changed the plugs and wires about 2 weeks ago and it solved my rough/weak engine. But that's not what it says now... it says P0171. (fuel system too lean - cylinder bank 1). It does NOT throw the accompanying P0174 that I see so much talk about, just the P0171.
AutoZone jumps to the conclusion that I need a new intake manifold gasket. I'm not going there just yet before I check it out with my bros here first!
First off, here is what has happened lately, in case any of this is pertinent.
1) First code 3 weeks ago was a P0308
2) changed plugs and wires
3) ran great again, but soon started (see unholy roar thread) roaring.
4) took it to my Indy shop guy to see if he could diagnose - he said get it to a muffler shop ASAP because I needed new Cats (4 of them)
5) did that ($1092 ... woo hoo...) and then "roared" my way home to change do the front end diff and axles myself ($)
6) finished that this morning, and took it to AutoZone thinking it was gonna be the P0308 again, but no.
Now, from what I understand, this could be from a vacuum leak - which brings up a question I had while changing out my front diff. The tube that goes out of the top of the diff, is that supposed to be connected to anything (Like, is that a vacuum hose)? Because my original one was not. it came down with the pumpkin, and I thought "oh crap! I forgot to disconnect that before I lowered the pumpkin!) But then I noticed it has a plastic cap in the end of it and while it is completely covered in dirt and grease buildup, it looks like the cap is solid. Of course, that makes no sense. Why would Ford put a hose coming out of the pumpkin that leads to nowhere? But point being, if it WAS hooked up to something, it was doing no good for many many thousands of miles.
Anyway, dirty air filter, dirty MAS (231k miles on this truck), any other simpler ideas before I start tearing the top of the engine off?
I went in to autozone to get that stupid CEL checked out to see why it still thought I had a cyl.#8 misfire when I changed the plugs and wires about 2 weeks ago and it solved my rough/weak engine. But that's not what it says now... it says P0171. (fuel system too lean - cylinder bank 1). It does NOT throw the accompanying P0174 that I see so much talk about, just the P0171.
AutoZone jumps to the conclusion that I need a new intake manifold gasket. I'm not going there just yet before I check it out with my bros here first!
First off, here is what has happened lately, in case any of this is pertinent.
1) First code 3 weeks ago was a P0308
2) changed plugs and wires
3) ran great again, but soon started (see unholy roar thread) roaring.
4) took it to my Indy shop guy to see if he could diagnose - he said get it to a muffler shop ASAP because I needed new Cats (4 of them)
5) did that ($1092 ... woo hoo...) and then "roared" my way home to change do the front end diff and axles myself ($)
6) finished that this morning, and took it to AutoZone thinking it was gonna be the P0308 again, but no.
Now, from what I understand, this could be from a vacuum leak - which brings up a question I had while changing out my front diff. The tube that goes out of the top of the diff, is that supposed to be connected to anything (Like, is that a vacuum hose)? Because my original one was not. it came down with the pumpkin, and I thought "oh crap! I forgot to disconnect that before I lowered the pumpkin!) But then I noticed it has a plastic cap in the end of it and while it is completely covered in dirt and grease buildup, it looks like the cap is solid. Of course, that makes no sense. Why would Ford put a hose coming out of the pumpkin that leads to nowhere? But point being, if it WAS hooked up to something, it was doing no good for many many thousands of miles.
Anyway, dirty air filter, dirty MAS (231k miles on this truck), any other simpler ideas before I start tearing the top of the engine off?
