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Old 09-18-2012, 01:55 PM   #81
exploring/carolina
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Update:

Have not had any issues with the Toyota/Gates 18423 heater hose, previously mentioned in this thread, that replaced the original Ford PCV hose @ 110,000 miles in my 04 ZX3 2.3L with manual transmission.

The ZX3 now has over 130,000 miles one year later & running great!
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Old 10-14-2012, 08:30 AM   #82
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I had the same exact problem as a lot of people here, i traded a rotting out 98 vw golf for my 2003 zx3 and heard the hissing, my mechanic friend sprayed the intake manifold with cleaner and heard the change in idle and thought it was thought. my other friend and I took off the manifold and saw the cracked pcv hose, so we came on here, read this thread, bought the toyota hose, and will hopefully be putting it back together today.



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Old 10-14-2012, 08:44 AM   #83
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did they do away with this one the 08-11's? I'm having an idle issue and I cant tell of it's this hose or not. It's a small issue but it's there
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Old 11-12-2012, 11:56 AM   #84
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in these pcv hose replacement needed scenarios was the Check Engine Light ever on?
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Old 11-12-2012, 12:04 PM   #85
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...i ask because i've been experiencing (@107K) that too common "low idle-leading to-stall out" issue and thru research have found that it's probably the pcv hose and/or valve...CEL came on shortly after the problem started...haven't driven it since...just checking before i take the plunge! help, please
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Old 11-12-2012, 01:58 PM   #86
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Stalling out could be bad maf or a wire in the pigtail. Mine was trying to stall out at 3200
Rpm and i was a pigtails wire. If you're car makes hissing noise when you shut it off then it's the pc
Hose.
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Old 11-12-2012, 07:50 PM   #87
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wire in the pigtail?

hmm..maf...i'll try cleaning it...i did just replace the air filter after the stalling out started...maybe some dirt damaged it. about the wire in the pigtail tho..? i'm sorry but i don't know what you mean by that...please explain.
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Old 12-14-2012, 12:55 PM   #88
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First I want to thank everyone for the posts. I had to replace my PCV hose and this forum was a huge help.

Unfortunately, after I replaced the hose, my idle is too high, (1100). I've checked for vacuum leaks and double checked everything. I took it to a shop for a 1 hour diagonstics and they did not find anything. When I replaced the hose, I didn't put on new intake gaskets, so I decided to try new gaskets for the intake and also a new PCV value. Still high idle. I replaced the TPS today and it is still a high idle. It feels like the rpm hangs or doesn't return to normal while I'm driving.

I am getting a code, P0507 (high idle) DUH!

Any help and suggestions would be great.

Thanks
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Old 01-31-2013, 04:57 PM   #89
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When removing the Intake, did you have to do anything with the fuel lines? releive pressure/disconnect any?


for math-rulez- try cleaning the MAT sensor by the filter with some electric parts cleaner, and TB butterfly and reset ECU/battery.
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Old 04-02-2013, 09:32 AM   #90
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I'll ask this here because it seems to be the right place for it.

My 2005 Ford Focus ZX5 is showing a P10171 CEL code. It ran okay for a while, but now I've noticed that it has a rough idle and sometimes it starts hard (but only in colder weather). Anyway, I've had a K&N cone filter on it for at least 50K miles.

I took it into the dealership and they replaced the O2 sensor and MAF. They also cleaned the injectors. The tech says that the MAF isn't reading right with the filter on. I bought a new one and he said it shows the same issue, but it runs just fine with the filter off of the car.

I asked them about the PCV valve and he told me that he checked it and that's not the problem. He also said the fuel pressure looks good. They want me to put a stock air filter on and see how it runs then. I found the part online for cheap and have it, but haven't tried it yet. IT doesn't make sense that a more restrictive air filter would solve the issue.

After reading this, I'm wondering if it really is an issue with the PCV, but since it's a pain to get at, they didn't really check it.

Thoughts?
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