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RPM slightly unstable

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Posted 07 February 2003 - 07:34 PM


    Fast & Furious

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  • PipPipPip
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Few weeks ago, I changed my Focus air filter with Pipercross air
filter, especially designed for Focus 1.8.

Performace wise, very2 satisfy. 1st & 2nd gear can really fell the
different when I use the original air filter. At 5th gear.. the car
still "kick" (even though I've already > 100 km/h) when I
accelerate & can easily over-take with 5th gear.

The only problem (I think it is not really a problem?).... I notice
the RPM is slightly unstable when I am on free gear. My concern
1) will it cause problem in the long term?
2) I understood that for Escape, Zetec engine will "self" adapted
to driver's driving style... is it the same case for Focus?

Fordies... your comment is very much appreciated.


Posted 14 May 2003 - 08:03 PM


    Fast & Furious

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Finally I got it right.

Initially I wanted to let the electronic system to re-adapt itself. It did the job but not to
100%, even after > 1 month.

Last week I checked with Ford mechanic if they can re-tune the engine to fully stabilize
the RPM. But according to him, Zetec engine is self-adapted & they can't tune it!!!!

Not satisfy with that explanation, I finally disconnect the battery & hope when I
re-connect the battery, the engine & electronic system will re-tune with the Pippercross
air filter. IT WORKED!!!!, within a day, my RPM is now back to normal (stable) & to my
suprise, the engine is now giving me even smoother ride!!!!

For Focus owner, if you make any changes, it good to erase the current set-up by
disconnecting the battery, rather than leaving the electronic system to re-adapt to the
changes. I think, this is valid for Escape also, b'coz Focus & Escape are using similar
engine family.