The Dispatch | Expert | Scudo Hub

GD

Member

Registered: 2025-07-19

Posts: 2

No glow plugs light on 2004 1.9D

Hi, new to the group so bare with me.
2004 Fiat Scudo 1.9D.
First thing in the morning when turning on the ignition l have no glow plug light and it won't start.
If I hotwire the glow plugs it will start but smokes horrendously!
If I drive it for a bit then stop and restart the glow plug light comes on and it runs like normal. If I don't start it first thing and leave it parked in the sun till midday it will probably start like normal, but not always. After the initial start it will start like normal even if left on site all day. When the glowplug light doesn't come on and I start it the temperature gauge doesn't work either.
So far I've replaced the temperature sensor and glowplug control box.
Anyone else had this problem?

kenbw2

Administrator

From: Preston

Registered: 2017-11-26

Posts: 1,585

Re: No glow plugs light on 2004 1.9D

Sounds odd. I believe the later 1.9Ds have "electronic advance" where the timing of the fuel is slightly adjusted for cold starts. There's a basic ECU somewhere

If not the glow plug control box then that would be my next suggestion

There's likely a better fix, but you have one option of adding a button in your cab that allows you to bypass all the systems and send a feed to the glow plugs

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2000 Citroen Dispatch 1.9TD XUD9 Camper Conversion
1999 Citroen Dispatch 1.9D DW8 Disassembled Camper Conversion
1996 Peugeot 806 1.9TD XUD9 Spare vehicle
1998 Citroen Synergie 1.9TD XUD9 Snapped timing belt

GD

Member

Registered: 2025-07-19

Posts: 2

Re: No glow plugs light on 2004 1.9D

Yes there looks to be an ECU on the wing behind the glow plug control box. I was a bit miffed when I spotted it as the whole idea of getting this van was to be electronics free after the hassle I've had with my 2016 Citroen relay! Before the Relay I had an 2002 Expert that had over 250k on it and it never missed a beat.
It definitely seems temperature related. I was thinking of changing the MAF sensor next incase this was sensing temperature as well.

kenbw2

Administrator

From: Preston

Registered: 2017-11-26

Posts: 1,585

Re: No glow plugs light on 2004 1.9D

The pre-2000 are the only ones that are 100% ECU-free - there's the DW8 and DW8B, with the -B having the electronic advance and the MAF added

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2000 Citroen Dispatch 1.9TD XUD9 Camper Conversion
1999 Citroen Dispatch 1.9D DW8 Disassembled Camper Conversion
1996 Peugeot 806 1.9TD XUD9 Spare vehicle
1998 Citroen Synergie 1.9TD XUD9 Snapped timing belt