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Ford focus idle issues.


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Hi Folks

I have a 2002 1.6 petrol Ford focus estate lx. I'm having idle issues. Usually it's ok when I start the car ( although lately the engine may surge when I start it up ) but when it gets up to tempreture, the idle will drop quite low when stationary. 

Engine runs lovely when driving along. 

List of things I've tried, to resolve the issue. 

New PCV hose & valve. ( Old hose collapsing at the elbow). 

Cleaned IAC valve. ( numerous times).

Removed and cleaned throttle body.

Other things I've done, which probably don't relate to the issue but might be worth mentioning. 

New spark plugs 

New air filter

New coil pack 

Any other ideas to help with this issue will be much appreciated!

I've done lots of research, and it seems alot of people have success at solving this issue by cleaning/replacing the above parts. No such luck for me! 

Again any help would be appreciated.

Thank you. 


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