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Old 12-19-2009, 08:34 AM   #161
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Is the hose located in the same place on a UK Zetec?
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Old 01-21-2010, 03:11 PM   #162
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Good afternoon Gang...

Has anyone substituted the YS4z-6N664-BA with the XS4Z or Vice Versa? I work for Dorman Products and we have released the YS4Z into the aftermarket. Should be able to get it from major retailers if your OE dealer does not have it in stock or its backordered.

They are similar parts, except the XS4Z has insolation from the heat and the one end is shaped differently. Almost as if the 2000 Zetec has something to interefere with the XS4Z from working. See images:



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Old 01-21-2010, 04:43 PM   #163
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I'm going to check my hose tonight, every once in a while my car will stumble when it's idling for no apparent reason.

Question I have: would this hose being faulty cause fuel mileage to drop with the vacuum leak? thanks.
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Old 01-28-2010, 10:23 AM   #164
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Ever since I checked the hoses, maybe I cracked something else or cracked it more but now it stumbles every time you come to a stop like it wants to stall. She sputters slightly to get moving for the first few feet but then shes fine once driving. Looks like I'll be doing this repair asap.

Any comments on the gas mileage I posted above? I don't think my focus gets near the mpg it should.

Thnx.
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Old 03-10-2010, 10:36 PM   #165
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Yeah my replacement came with the foil and was waaaay thicker, but I still get some stumbling... Does anyone know what else it can be??
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Old 03-20-2010, 07:45 PM   #166
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Thanks for the hose mod!
I just replaced the starter and happened to notice that my hose was malted in two. And seemed very soft and pliable.
Went to Auto Zone and no part matched. Going back to the parts store to get the things you listed. You're a life saver! Car won't stay at idle without that hose...
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Old 03-26-2010, 12:11 PM   #167
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alrighty...so how hard is this to replace? seems like its back and under enough to be a pain. my car has had the bad stumble and cuts off if in park. looked at the hose with the car running, and it was pinched shut. so time for a new hose! and this is something ford should have in stock or no?
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Old 03-26-2010, 03:56 PM   #168
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hose wont be in stock... you'll have to wait a day or 2. And its very easy to replace, takes like 5 minutes. You can check your pcv valve while your there.
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Old 03-26-2010, 04:21 PM   #169
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alright so i went on fordparts.com, and they list it as a crankcase breather pipe and a part number of 6C342B. is this the right one? i put the part number in i saw here, and it doesnt pull it up???

edit: alrighty nevermind. went on my dealers website and had the part so i reserved it. they had 1 in stock so hopefully i can go pick it up tomorrow.
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Old 03-27-2010, 09:22 PM   #170
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so thats a no on this one. changed out the hose and its still doin the same shit. although the hose DID need to be changed. looks like i may be lookin at doin the IACV....woopity doooo.....ughh...
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