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Gallagher99, Senior Vehicle Technician
Category: Car
Satisfied Customers: 3333
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ford focus 1.8 w reg now and again engine will rev when i use

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ford focus 1.8 w reg now and again engine will rev when i use the brake pedal have changed the coil pack new ht leads and plugs any ideas many thanks paul.
Hi there Paul
Does the revs take a while to come down if you rev it from stationary
Does the idle rise when you stop at junctions
Regards ***** *****
Customer: replied 3 years ago.

yes you got it in one.

Hi Paul
Ok the fault lies with a split /collapsed breather hose at the under side of the inlet manifold
The reason the vehicles idle rises /takes a while to come down is that the engine is drawing in undetected air
(Basically the air glow sensor doesent. See this so the PCM /ecu cannot adjust the fueling for smooth idle
The hose is avaiable from your local ford parts department and isn't expensive from memory it is around £25 (would need to clarify this as it's been a few years since I have fitted one )
and takes 5 minutes to install
If you need anymore help or advice on this issue Paul please let me know
If you are completley satisfied with my answer /advice
Kind regards ***** ***** and have a nice evening
Any Postive feedback or bonuses are greatly appreciated
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Customer: replied 3 years ago.

many thanks brian will get on with it at w/end and let you know any special tools needed.

No worries Paul

No special tools needed think there may be 2 small clips but from memory it just pushes on

Refards Brian
Customer: replied 3 years ago.

Job done brilliant service thanks paul

Hi there Paul no worries

If you ever need any future help or technical advice please let me know

Regards Brian