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Old 24-05-2019, 06:50 PM   #1
Ezkaton
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Join Date: Aug 2016
Posts: 10
Default 2007 Focus LS Zetec - Engine Systems Fault

Hi all,

Hoping somebody can assist in diagnosing an issue I'm having with my car.

As the title suggests, I have a 2007 Focus LS Zetec and I've been getting this 'Acceleration Reduced - Engine Systems Fault' message. It's not always, and generally ONLY when the engine is cold.

For a while it was totally fine until I had a passenger in the front seat, and zing! Engine Systems Fault! Which is immensely weird as the car doesn't have any kind of seat electronics... From what I can gather it doesn't even bitch if someone is sitting there without a seatbelt on.

Anyway, once the error hits, often I find myself driving until the car is at running temp, then either pulling over or waiting until I'm stopped at some lights to turn the car off and start it up again - then it's fine. Sometimes also if it's cold I can start it around 3-6 times and it will come good.

I don't suppose anyone has any suggestions or can point me in the right direction?
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Old 24-05-2019, 09:04 PM   #2
GTLEGEND
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Technical Contributor: For members who share their technical expertise. - Issue reason: The quality of information he provides is in depth and highly valued by those posting questions. Valued Contributor: For members whose non technical contributions are worthy of recognition. - Issue reason: Every advice post I visit where OP are seeking advice for their new vehicle, he is there and adds valuable support and advice for rectifying the problem. Really is a Legend. 
Default Re: 2007 Focus LS Zetec - Engine Systems Fault

You need the vehicle scanned for DTC fault codes when the vehicle is faulting to give some sort of direction on the cause. It could be due to many factors..
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Old 25-05-2019, 09:28 AM   #3
Ezkaton
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Default Re: 2007 Focus LS Zetec - Engine Systems Fault

Okay, I assume this is different to OBD and I can't use my OBD2 scanner to find the fault?
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Old 25-05-2019, 11:08 AM   #4
11ford11
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Default Re: 2007 Focus LS Zetec - Engine Systems Fault

Start with scanning for codes
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