Focus 1.6 Zetec Engine 'hunts'

Honest John Back Room » Technical matters
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Fri 14 Jan 2005 19:29
Focus 1.6 Zetec Engine 'hunts' - Roly93
We have a fairly new 1.6 Focus, and it has an unusual anomaly.

Namely, when it is cold it starts fine and also when it is hot it starts and ticks over fine.
However when it is 'warmish' ie left for say 2 hours after having been Hot, when you start the engine, it starts okay and you can drive off okay, but if you leave it to idle, the engine will not settle to a staedy idle. Instead the engine just hunts or oscillates between say 750 and 1400 revs.

Any ideas ?
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Fri 14 Jan 2005 20:24
Focus 1.6 Zetec Engine 'hunts' - toolslinger
dear roly

no ideas but my 2002 1.6 zectec does exactly the same.
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Sat 15 Jan 2005 14:28
Focus 1.6 Zetec Engine 'hunts' - GroovyChick{P}
My 1.8 Zetec Focus did the same thing but more so when cold. I mentioned this when I took it in for a service and they did some sort of engine management upgrade on warranty. Touch wood it's behaved since!

GC
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