Fix for Check Engine light codes: p0401, po171 and po174 - Page 2 - Ranger-Forums - The Ultimate Ford Ranger Resource


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  #26  
Old 06-09-2009
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you can buy a scanner from most of the parts stores. some are better than others, or you can get one from a matco or snap-on dealer, very pricey though.
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  #27  
Old 06-10-2009
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Quote:
Originally Posted by 02oregonedge+ View Post
If it's going flat you need to change the elbow, or it's going to do what mine did and get a hole in it from too much heat..
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for sure elbow change time, if its that weak its gonna start to leak really soon.
Thanks guys.
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  #28  
Old 06-10-2009
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That elbow seems to be a weak point for sure, from all the posts on this thread.

That same part gave out on me a few years ago, and the CEL did, indeed, come on.

I was lucky, because when I popped the hood, I heard a distinct "hissing" and managed to trace it to the split elbow.

Rather than going to the dealer for the part, I fabricated a repair on the spot, using a copper plumbing elbow and a couple of appropriately sized sections of heater hose that slipped over the elbow, the plastic vacuum hose and the engine nozzle with a tight fit.

The repair has held up - the only shortcoming is that the heater hose softens over time, but that is probably no more or less than what the original piece undergoes, so I just replace the hoses when needed.

Seems to me the deterioration of that elbow has a lot to do with the tremendous amount of heat it's subjected to, the friction of the upper rad hose rubbing against it, and the soft rubber compound it seems to be made of.

In any event, it's a pretty simple fix for a problem that can cause so many drivability problems - glad you got it traced and fixed.
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  #29  
Old 06-11-2009
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well i got both codes now and i looked at the elbow the correct one this time lol and i have a small crack in it....

so where did you guys get your replacement? local hardware store?

edit: just turned the truck on and its going flat lol
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  #30  
Old 06-11-2009
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well i got both codes now and i looked at the elbow the correct one this time lol and i have a small crack in it....

so where did you guys get your replacement? local hardware store?

edit: just turned the truck on and its going flat lol
Dealership, PM me and i can mail you one if you want
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  #31  
Old 06-11-2009
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Dealership, PM me and i can mail you one if you want
I might just have to take you up on that...and get some 06 corners while I am it.
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  #32  
Old 06-11-2009
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damn i should of waited longer lol all well im fixing it now
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  #33  
Old 06-11-2009
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that thing was a ***** to get off i ended up ripping it completely in half then i had to take a knife and cut it longways to get off lol

P.S i need to reset the CEL right?
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  #34  
Old 06-11-2009
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interesting, my truck is throwing only 1 lean code. i'll have to check that elbow. glad i found this thread. thanks for posting!
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  #35  
Old 06-11-2009
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I think this thread should be sticky'ed, cause it seems like it's another notorious ranger problem....
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  #36  
Old 06-12-2009
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Originally Posted by PwrRngr View Post
interesting, my truck is throwing only 1 lean code. i'll have to check that elbow. glad i found this thread. thanks for posting!
mine was just throwing one code at first also
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  #37  
Old 06-12-2009
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Originally Posted by 02oregonedge+ View Post
I think this thread should be sticky'ed, cause it seems like it's another notorious ranger problem....
There is a TSB on it... LOL
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  #38  
Old 06-27-2009
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i get the code for insufficient flow and sometimes excessive flow. i replaced the dpfe and egr and the codes wont go away. i put some cheap stp fuel cleaner in the tank, and the codes finally left. this was a year ago, and the codes have come back. the cleaner won't work anymore.

i checked the elbow, and it doesn't go flat, and there doesn't seem to be any visible cracks or holes. should i replace it anyway? any thoughts to what else it could be?
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  #39  
Old 03-22-2010
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anyone know if the p/n F8UZ-6762-AA is still current for this hose? The dude at the dealer had no idea what I was talking about. Fordparts.com calls it the "elbow-crankcase vent tube" and it's 17 bucks, but I'm not sure if it's the right part. Any ideas would be great thanks.
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  #40  
Old 03-22-2010
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i can't find the elbow piece, my truck has been running horrible lately, thanks 04blackedge for posting that tip about unplugging the battery then turn the headlights on. That is really cool to know.

If anyone can help me locate this little elbow thing that would be great
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  #41  
Old 03-22-2010
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How many inches of vacuum is normal at idle?
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  #42  
Old 03-22-2010
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How many inches of vacuum is normal at idle?
18-22 in vac at idle
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  #43  
Old 03-22-2010
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Quote:
Originally Posted by lownrangr View Post
anyone know if the p/n F8UZ-6762-AA is still current for this hose? The dude at the dealer had no idea what I was talking about. Fordparts.com calls it the "elbow-crankcase vent tube" and it's 17 bucks, but I'm not sure if it's the right part. Any ideas would be great thanks.
I actually ended up buying a silicone elbow online today so I won't have this happen again.

Quote:
Originally Posted by andddrew says View Post
i can't find the elbow piece, my truck has been running horrible lately, thanks 04blackedge for posting that tip about unplugging the battery then turn the headlights on. That is really cool to know.

If anyone can help me locate this little elbow thing that would be great
it's right about where the yellow circle is, behind the rad hose.
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  #44  
Old 03-22-2010
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I got 18 inches of vacuum. checked the elbow and it's got a 3/4'' crack in it. Where can I get a new one and what is the part number?
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  #45  
Old 03-22-2010
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Quote:
Originally Posted by lownrangr View Post
I actually ended up buying a silicone elbow online today so I won't have this happen again.



it's right about where the yellow circle is, behind the rad hose.
Hey so i dont know if my engine is different then yours, but i can't seem to find that tube in the engine.



i just took a quick picture of my engine can someone lead me in the right direction.... btw i dont know where the throttle box is or how to take it off
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  #46  
Old 03-22-2010
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you have a 3.0
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  #47  
Old 03-22-2010
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oh wow so this can't be done on a 3.0?
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  #48  
Old 04-21-2010
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Just wanted to say thanks. You guys ROCK!!! I had done everything from new plugs, new EGR, new fuel filter, cleaned the MAF and replaced the Differential Pressure Sensor and it still idled rough hot and threw the codes. Went and replaced the elbow yesterday and SHAZAM!!! No more codes and it idles great. Thanks again!
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  #49  
Old 07-26-2010
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Since there is a tSB on it is it a free fix? my elbow is collapsing. wish i would have known this sooner ive replace 4 dpfe sensors for insufficient flow. Good advice though!
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  #50  
Old 08-10-2010
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Trent, This should probably be a sticky somewhere. I love showing people this when i'm at the parts store. They are like WTF!?! Most people sadly spend $100's of dollars before they figure this out. Thanks to Jazz921 and Toreador4x4 I saved a lot of money on my old black truck.
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