ZETEC Engine stumble - SOLVED

[Benporat]

Originally Posted by HawkeyeFLA

Not familiar with that hose. Which engine do you have?

Ford Focus LX 2004 (assembly Spain)
engine:
zetec SE 16V 1600cc

[DirtyDeeds]

Originally Posted by subtleshift

quick question, my idle bogs just like you guys are explaining, but i have an SVT...does anyone know if this is a fix for an svt too...if it wasnt late right now id check it out myself!

Yes, the SVT also suffers from this problem. The PCV hose on the SVT is a different configuration, but has the same issue as a standard Zetec.

[copper67440]

Originally Posted by copper67440

This information is awesome. 150,000 miles and I have been living with the CEL going on and off for a while, stumbling at idle, irratic idle, stalling, sloooooow a take off, It's gotta be the hose. I'm going to check asap.

well I checked and it looks good, did change the pcv valve, old one was rusty, CEL still on... disconnecting the battery next.....

[drunkinmonkey]

my car had a rough idle it would go from 1000rpm down to 300 rpm almost stalling i had to keep reving it for it to not stall...the other day i installed an new CAI and problem solved....i assume a shoty stock intake?? idles nicely around 500 rpm now

[X-Rated]

Great thread, didn't even think about that hose, will have to check it out today. I was thinking more on the lines of the throttle position sensor for the rough idle at a stop(in drive). Like most here, mine would wanna die as I am coming to a stop, it would idle way down(somewhere around 3-400 RPM's and then jump back up to 700 with a surging idle. Like I said earlier, it will be checked out today but if that's not it I'm gonna have to hunt for a TPS for an automatic(most parts listings only show for a manual tranny) which could make for a difficult search without going to the dealer.

Any thoughts on the the TPS(throttle position sensor) would be helpful, and FYI, I work at a parts store and that's why I know about the the TPS listings. Might even have to pull mine off to get a look at the part # on it.

UPDATE: I, like the rest of us in this thread, have a collapsed PCV hose. Soon as I get the part we will see if it cures the problem.

@ copper67440: You have my sister for an avatar...LMAO!!!

[hermitt]

I Just wanted to say a big THANK YOU to the OP.

After coming across this thread last night I just today found the bad hose that has for a few weeks been causing a rough idle and stalling when coming to stops on my 2002 Focus. It will be fixed this weekend, but for now a little duck tape has my car idling smooth again.

Thanks again. Hermitt

[PlasticRacer]

i too must confess, that i have been having the same problem and have been side steppin it, but now that i've seen the light(thank u jebus!!) i'll get to it

[PlasticRacer]

HA!! funny, i'm reading back over this thread and people just started floodin in with the same problem, and thanx to bwojdyla, we've all been given the inspiration we needed to do something, this man better hav gotten some rep points for this

[NetroFlyer]

My newest employer sold me their oldest delivery car...
2002 ZX3 Zertec with 165,000 miles...
$1500.00 ( $100.00 every payday, every two weeks)
It ran PERFECT the first week...
Then I decided to clean it up a bit...even under the hood...
On the way home from the car wash, (I've already read that entire thread), it lost power gradually, the CEL came on, eventually having to "floor it" to get home..like only running on one cylinder...

I'll be checking this "hose thing" first tomorrow, and I want to take a few pics of some "under-the-hood-thingy's" that I want identified...

Looking forward to some help from all you guys...

[Benporat]

Check coil too!