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Old 01-02-2005, 02:35 AM   #51
bwojdyla
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I had about the same result when I clean my MAF. I don't know what to tell ya. If its not throwing codes its really hard to figure out. Perhaps get a shop manual and go through the troubleshooting secion.

As far as the PCV goes, trace all the vacuum lines to make sure they are all okay, leak could be somewhere else you know.
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Old 10-04-2005, 01:51 PM   #52
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I justed changed this hose also since it had pretty much collapsed at the bend coming out of the back of the engine. I've had issues with stumbling, hesitation, etc...I thought it would solve my issues....

Granted, the car runs much better but still I get slightly lumpy idle and the engine hesitates going downhill with CC on and at steady speed...STILL!

Don't know man..I'm ready to give up on this car.
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Old 11-01-2005, 07:28 PM   #53
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Can someone explain where the vacuum hose is located in the engine? Keep in mind I know nothing about cars.
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Old 11-02-2005, 08:32 AM   #54
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stand in front of the car, if you're looking at the throttle body, the vacuum hose runs into the manifold under the throttle body, it makes a turn around the right side of the engine.
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Old 04-01-2006, 05:17 PM   #55
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if thats the case , where is he pcv located on a 2005 duratec 2.0L i would like to check this out on my car
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Old 08-05-2006, 07:57 PM   #56
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Though this is an old thread, I just wanted to thank bwojdyla for posting this - I had no idea and when I looked that hose was indeed collapsed. I replaced it and the car runs sooooo much better. I too have an idle issue with AC on, but this really did help out a lot. Thanks again and especially thank you for the pictures and part number - very helpful!!!
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Old 08-11-2006, 05:29 PM   #57
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Yup, I got bit by this gremlin this week. 59,000 on my ZX3 and the hose was collapsing, hurting milage and causing rough performance. I spliced in a vac connector with a couple of hose clamps since local dealer didn't stock the part. Thanks to all for posting this, saved me a lot of headache and $$$$.
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Old 08-13-2006, 08:15 AM   #58
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Well, now I'm thanking you for the 2nd time - it just happened to my other Focus as well. I checked the hose and sure enough; now this one collapsed also. I was in a hurry to get to the Ford dealer since I only had 10 minutes to get there before they close (and I made it), but I didn't take the part # with me and the parts guy couldn't get me the right hose. Asked him if I could just get on a pc with internet and I'd show him the part # from your post here, and he let me. Pulled it up and showed him, no problem getting the hose after that and he mentioned he thought it was cool we had forums to discuss these types of issues.

One side note: this parts guy did show me a similar hose with a heat shield on it, which I found interesting - it cost almost twice as much, but it didn't look like that was the exact one I needed. You would have thought they'd have come out with an updated hose for this issue, but then again; why kill their own cash cow? I have to say that I do like my Foci, but it's interesting that just about everything that goes wrong with one of them also goes wrong with the next one - including this hose.

Thanks again man, this solved my problem on both my cars!!!
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Old 08-13-2006, 10:59 AM   #59
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Thank you all! My car has had the same problem, after today, with your help i think i've finally won the battle!
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Old 08-18-2006, 08:57 AM   #60
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I have a 2000 SPI Focus and I was getting a rough idle also. Last year I put in new plugs and wires so I did not think that was it, but after reading on here the Bosch Platiums were a bad idea. I replaced my plugs this week with Autolites and I also changed my fuel filter. No more rough idle!

But I was also having touble with it dying at stoplights, I thought it was fixed, but no. Now running fine at idle after 30 seconds or so stopped at a light it might still die. I replaced the elbow on the end of the PCV valve hose as it had a huge hole in it and I could hear it sucking, it cost $13.00. Now it's great again, $6 for the plugs, $8 for the filter, $13.00 elbow and $10 in tools as I had none and I fixed it myself!

For me the stumble had nothing to do with PCV, but the dying sure did. Just thought I would post in hopes of helping someone else out.
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