|10-05-2012 05:43 PM|
|ChaosWarlord26||Have you read the entire thread? Because it sounds like you have checked everything but the possible vacuum leaks the thread is about.|
|10-03-2012 08:40 PM|
|evilmonkeytamer||im having a horrible miss in my engine. replaced the plugs, wires, and coil. took the injectors off and checked them and they were all spraying good. any more ideas? the car only has 80,000 miles. 2000 model split port 2.0|
|10-02-2012 04:03 PM|
Yes. It's called a PCV hose. Do not ask for a crankcase ventilation hose. You'll get the wrong one. I went through a hassle with rockauto because they had it listed in the wrong category and I got stiffed with the wrong one. You want this.
It's the newer version. It's mounted under the plastic intake manifold on the back of a Zetec. They wear out and collapse, or just split altogether. Do a search and you'll see plenty of pics. https://www.google.com/search?num=10....1.Gp0CtY_4Hhc
|10-02-2012 10:28 AM|
|09-08-2012 04:03 AM|
Ive got a 01 with ztec 259648 miles same idle il be fixing but first battery causea weak batt willcause alot of problems shuttin stuff off. I will be lookin for leak as well thanks for yhis helpfull thread
|07-04-2012 03:16 PM|
|GeeGee||I recently purchased a 2008 Focus SES and it has a rough idle. If you all noticed most of the intake parts are plastic....ya! So I started looking at the connections and found one of them appeared to be secure but it was actually cracked and loose. Fortunately it had a male type plug so I wrapped tape around the outside and inserted it back into the manifold and wrapped wire around it to hold it in place....It idles Great!. I couldn't believe how easy that was...you all might want to check for cracked fittings!|
|04-06-2011 07:33 PM|
Okay so i bought my first Ford and it was my 2001 focus ZX3 5 speed.Love it !!!!!!Lots of fun to drive then last week i did the "stupid" and ran it almost out of gas since then it has had a rough idle but also noticed about a couple days before that there was like a hissing/sssshhhhh noise.So i did some research and put gas treatment in then that didn't work so i got some trottle cleaner and cleaned the throttle body.That massde it run a little smoother now back to a rough idle at stop lights,like it's gonna die and rpms go down to about 750.
Engine light came on so went to the autozone and some 19001 code came about oxygen sensor.
I love my focus and of course the gas mileage and the zoom zoom of it.
so this weekend my son and i will try the z hose thing.But if any other clues plz let me know.
|10-27-2008 03:01 AM|
|sunyfoci||i replaced the hose behind the engine below the tb but im not seeing the second hose you posted pics of whereabout on the zetec engine is that located assuming it is on the dohc|
|10-26-2008 07:19 AM|
this thread from 2004 would have given you a short cut to finding the problem
thats how I found my problem:
this looks like a very common, overlooked, and underdiagnosed problem
and some mechanics will run you up a big bill replacing perfectly good engine components before they get it right
|10-26-2008 07:04 AM|
Nice to find an older post where the problem was solved and explained thoroughly.
First off.....I don't think a rough idle is "normal" on any stock Focus. Of course when you modify the engine in any way, all bets are off.
Finding most vacuum leaks is fairly easy. If you suspect one (rough idle is one symptom), with the engine idling, lightly spray around the intake manifold and all the vacuum hoses.....with carb cleaner. If there's a leak anywhere, the engine will speed up. Avoid spraying the spark plugs and wires, as well as the exhaust manifold area.
You can pinpoint the exact leak with this method.....carb cleaner is flammable, so be careful.
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