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Thread: Rough idle nightmare Reply to Thread
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Topic Review (Newest First)
11-03-2013 09:16 PM
jebiruph Don't know what work you've done so far, but these are the same symptoms I had on my 2004 2.3 pzev with a bad coil. Mine was running ok until I replaced the old platinum plugs with the copper 103s. With the 103s installed, I had rough idle and hesitation. After alot of swapping coils and plugs around, I found that one of the coils didn't work with the 103 plugs.
11-03-2013 02:31 AM
Okusfocous I apologize for taking so long to reply to all of your posts... Thank you all for your suggestions. They are much appreciated and very helpful.
10-30-2013 01:18 PM
cheap sleeper
Quote:
Originally Posted by Highball116 View Post
I second the PCV hose. On the Duratec it's a very difficult hose to see, but if you take a flashlight and look through the intake manifold at all angles, you'll see it smashed in there. You can also catch glimpses of it from underneath, but getting your hand in there to feel it is a task fit for Houdini. Ford apparently has a $600 deal on PCV valve and hose replacement, which they do with special tools while the manifold is still in place. Doing it yourself requires removal of the manifold, which is a process.

Toby
Wow that is crazy that the pcv is like that on that motor :/

Well at least you have a code now to narrow it down a bit.
10-30-2013 11:02 AM
Highball116 I second the PCV hose. On the Duratec it's a very difficult hose to see, but if you take a flashlight and look through the intake manifold at all angles, you'll see it smashed in there. You can also catch glimpses of it from underneath, but getting your hand in there to feel it is a task fit for Houdini. Ford apparently has a $600 deal on PCV valve and hose replacement, which they do with special tools while the manifold is still in place. Doing it yourself requires removal of the manifold, which is a process.

Toby
10-30-2013 02:20 AM
amc49 These commonly crack at the PCV hose under intake to leak. If problem mainly at idle/off idle.

Cleaning MAF by spraying with some sort of solvent and then letting it completely dry before powering it up usually works. Carb cleaner or dedicated MAF cleaner. Either works.
10-30-2013 02:17 AM
Okusfocous
Quote:
Originally Posted by waraya View Post
whats the code?
po411
10-30-2013 12:32 AM
waraya whats the code?
10-29-2013 11:41 PM
cheap sleeper Sorry about your trouble bro. :/ Tom would be the guy to follow, but it also coul be a short or a break in a wire at the batt or sumpm. So if you get to a point where you're running out of ideas to try, maybe just get a beer, go out to the car with a test light, and be in no hurry at all. I would start at the fuse box under the dash and go through every active fuse. If nothings weird there, I'd mozy on up to the underhood fuses. Def clean the maf too, though I would like to ask Tom if I may his way of cleaning one. Have you had someone wiggle wires by the battery while you sit in the car and watch for any change? Sorry for the long posts!
10-29-2013 11:38 PM
Okusfocous I don't know anyone off hand that has an xcal2, but I'll ask around and get back to you on that. I would be very grateful for your help... One more detail though... The stumble is always present during idle, but I noticed today that it's much more violent when my foot is on the brake at a red light or after prolonged driving. If I'm stopped at a red light and I shift into neutral it gets a little bit better. Does this point more toward a vaccum issue?
10-29-2013 10:47 PM
1turbofocus Do you know anyone you can barrow a xcal2 or 3 flasher from and we can do some datalogs and I will be glad to help at no charge

Tom
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