Glow Plug Light stays on

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Diesel engine related problems
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My Name: nicko

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Posts: 4
Joined: Sat Mar 24, 2012 8:48 pm

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Hi Guys!

Just gotten myself another C3 HDI 16v as my other one will turn over but won't start, looks to be a nightmare ECU issue, so unless a miracle comes along it will be going on ebay as a non runner - shame cos mechanically its pretty sound.

Anywayyy, I have just picked myself up a 2005 C3 hdi 16v Exclusive - lowish mileage. The car is great, but the engine pre-heat glow plug light stays on. How should I go about diagnosing and fixing?

Many Thanks
Nick
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My Name: Arfur Dent

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Posts: 3423
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)
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Hi Nick
The car is great, but the engine pre-heat glow plug light stays on. How should I go about diagnosing and fixing?
I would look for voltage at the glow plugs to see if they are actually being powered while the light is on.

This can help break down the fault to glow plug/relay or ECU fault.

You can check for voltages at the relay (behind the bumper), look for input and output voltages, you will see if there is a constant signal to energise the relay (suspect ecu) or no input but you have an output (suspect relay).

If you change the relay, change all the glow plugs at the same time too ;)


Glow Plugs fitted in the head - above the n in 'Citroen'
Glow Plugs located on a Citroen C3
Glow Plugs located on a Citroen C3
Glow plugs out of the car
Glow Plug removed from a Citroen C3
Glow Plug removed from a Citroen C3

If you need the relay, have a look at this link to ebay the same relay was fitted to several makes, over the years.

The C3 HDi glow plugs are available as a set from this link to brand new parts.
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My Name: gixer1100

Member
Posts: 1
Joined: Thu Mar 05, 2015 8:21 pm
Model: C3 2002-2005, Original shape model
Year: 2004 (54)
Engine Size: 1.4 (16v)
Fuel Type: Diesel
Mileage: 100000
Trim Level: Exclusive
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)

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Hi Nick. Did you get to the bottom of this problem? I've got the same issue. Thanks
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