Engine turning but not starting. Quick tip

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Think: Diesel engine, diesel fuel system, diesel injectors and glow plug tips
My Name: johnsiddle

Member
Posts: 2
Joined: Sat Feb 04, 2017 12:17 am
Model: C3 2002-2005, Original shape model
Year: 2002 (02)
Engine Size: 1.4 (16v)
Fuel Type: Diesel
Mileage: 200000
Trim Level: Exclusive
Gearbox: Manual 5 speed
DPF: Yes
LHD or RHD: RHD (UK)
Engine name: DV6 16-valve diesel (92 PS)

Post

Just had an interesting fault.
I bought some new cases for my keys as the buttons had broken on them.
I fitted the original key and checked the doors unlocked, but later when I went to use the car it would turn but not start.

After a lot of hair pulling I found that embedded in the body of the original key case is a small rectangular black chip about a cm by 6mm and with no legs so it looks just like a piece of plastic.

It appears this is what triggers the immobiliser and allows the engine to start, so make sure you transfer this chip over as well as the key blade its self if you buy any of these key cases.
Regards John
:oops: :oops:
Citroen C3 2002 early immo chip location for non starter after fob change
Citroen C3 2002 early immo chip location for non starter after fob change
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My Name: Arfur Dent

Guru
Posts: 3417
Joined: Sat Jul 23, 2011 3:47 pm
Model: C3 2002-2005, Original shape model
Year: 2002 (52)
Engine Size: 1.4 (16v)
Fuel Type: Diesel
Mileage: 100000
Trim Level: Exclusive
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)
Engine name: DV4 16-valve diesel (90 PS)
Has thanked: 307 times
Been thanked: 119 times

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Thanks, it's the immo chip and there are pictures of the chip and the fob in this fob fix topic.

Without a paired immo chip you can't get past the immobiliser and the injectors won't let fuel pass.
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My Name: johnsiddle

Member
Posts: 2
Joined: Sat Feb 04, 2017 12:17 am
Model: C3 2002-2005, Original shape model
Year: 2002 (02)
Engine Size: 1.4 (16v)
Fuel Type: Diesel
Mileage: 200000
Trim Level: Exclusive
Gearbox: Manual 5 speed
DPF: Yes
LHD or RHD: RHD (UK)
Engine name: DV6 16-valve diesel (92 PS)

Post

Thanks Arfur,
when I had the fault, I thought it was an engine problem and initially didnt think of the key fob so only searched for an engine fault.
It was only when getting desperate that I retraced my steps with the key fob.
The Haynes I have did not mention the chip so I didn't think.

Thanks for your reply.
Regards John

:oops: :oops: :oops:
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