Focus idle issue... SORTED!
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From: Fast Ford
If you disconect the MAP sensor the car will hunt for idle.
Also the engine has a little feature where it holds the revs for a split second while you change gears to make it smoother. Disconect the map sensor and you loose this feature, you WILL notice it. You will be kangarooing everywhere if you have gotten used to it too
Also the engine has a little feature where it holds the revs for a split second while you change gears to make it smoother. Disconect the map sensor and you loose this feature, you WILL notice it. You will be kangarooing everywhere if you have gotten used to it too
I won't lie, pig of a job! Easy, but an absolute pig without removing the inlet.
Part number from ford is FMU 1337254 and I paid £12.15 for it.
The hope just pulls off, I removed the idle speed control valve (and if you have it) the wiring going to the MAP sensor.
A little bit of oil on each end of the hose to push it on and some patients. Will go on eventually.
This is a picture I took showing everything I removed
Think I've named it all.
Have fun
Part number from ford is FMU 1337254 and I paid £12.15 for it.
The hope just pulls off, I removed the idle speed control valve (and if you have it) the wiring going to the MAP sensor.
A little bit of oil on each end of the hose to push it on and some patients. Will go on eventually.
This is a picture I took showing everything I removed
Think I've named it all.
Have fun
To dan, as it's only a breather pipe, any correct diameter pipe should do the job! Tbh, gaffa tape would be fine.
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From: Fast Ford
So it's not a vac pipe?
To be fair he only removed one clip and a couple of easily accessible bolts.
It is a pig to get at unless you've got a child's hands, particularly to push back on.
To be fair he only removed one clip and a couple of easily accessible bolts.
It is a pig to get at unless you've got a child's hands, particularly to push back on.
Last edited by DanW@FastFord; Dec 26, 2011 at 09:09 PM.
And yea it is quite fiddly, and I have small-ish hands. Although When I took my iscv off to check/clean it, the hunting got worse, so I try and refrain from removing things that aren't broken lol.
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From: Fast Ford
I popped the F20 fuse (was 10 amp) and disconnected the battery for good measure.
Left it for a while, then restarted the car. Let it tickover for a while, took it for a quick run up the road (god I wish my TDCi got up to temp as quick!!) and it ticks over absolutely perfectly!
Left it for a while, then restarted the car. Let it tickover for a while, took it for a quick run up the road (god I wish my TDCi got up to temp as quick!!) and it ticks over absolutely perfectly!
Virgin
Joined: May 2016
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From: Isle of man
I had same problem on my 09 focus sometime would hunt other times would almost stall or stall occasionally.
Checked all hoses and unions all ok decided to change out plugs as a start and on removal found 3 had callapsed to the point there wasn't any gap for a spark problem solved.
Checked all hoses and unions all ok decided to change out plugs as a start and on removal found 3 had callapsed to the point there wasn't any gap for a spark problem solved.
Virgin
Joined: May 2017
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From: Exmouth devon
Thanks for the breather pipe answer.replaced the longer split pipe with some rubber reinforced pipe cut slightly longer.plenty of room for a more gentle curve. cheers, again i had spent ages trying to find the fault, fine now!. regards Mike
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