Coolant Light Flasing - Astra Sport and Astra Owners Club - Mk1 | Mk2 | Mk3 | Mk4 | Mk5 | Mk6 | Astra Van | 888 | VXR

turboed · 16-03-2006, 20:30

Anybody know of any common faults where the coolant light keeps coming on and going off at all differnt times. I had the air con re gassed 4 months ago and havent used it recently but noticed today when I got out with the engine running I heard the small air con fan spinning up. Anybody had this?
Astra coupe Z20 LET EDS phase 3

BYRON · 16-03-2006, 20:36

what engine you got?

Have you physically checked the coolant level in the header/expansion bottle?

turboed · 18-03-2006, 18:39

Yes the leval is correct and flows fine once up to temp and the cool running stat opens, very stange that it flickers more when cold

glen · 18-03-2006, 21:42

i had the same sort of problem and when i had it checked it was the water pump leaking!

BYRON · 19-03-2006, 13:36

My computer flashed up that the Coolant level was low on Tuesday, and to my surprise the header bottle was almost empty....strange as Im positive it was all there on the previous saturday.
Then last night the light computer flashed it up again! Checked the level this morning and it was fine.

Reckon a trip to vxl maybe in order.

2TS · 20-03-2006, 13:33

Could also be bad fuel. If you plug in a tech 2 you may get fault logged "fuel trim sensor". Mine did the same yet cooling system was ok.

Could also be a vacuum leak. Check al vacuum lines.

BYRON · 20-03-2006, 13:44

flashed the warning up again this lunchtime...checked the coolant and it was fine.
The day I ignore the warning will be the day there really is no coolant!

dazerc · 22-03-2006, 15:53

had this light come on intermitantly on my car and the engine temp gauge showed 0 even though the car was hot. replaced the engine temp sensor and it cured it. this was after my vaux dealer replaced the stat but not the sensor that goes into the stat

16-03-2006, 20:30	#1
turboed AS Newbie Join Date: Sep 2004 Location: London Drives: Car mods and hitting little white balls Posts: 81	Coolant Light Flasing Anybody know of any common faults where the coolant light keeps coming on and going off at all differnt times. I had the air con re gassed 4 months ago and havent used it recently but noticed today when I got out with the engine running I heard the small air con fan spinning up. Anybody had this? Astra coupe Z20 LET EDS phase 3 Last edited by turboed; 17-03-2006 at 18:41.

20-03-2006, 13:33	#6
2TS AS Newbie Join Date: Jan 2006 Location: South Africa Posts: 29	Could also be bad fuel. If you plug in a tech 2 you may get fault logged "fuel trim sensor". Mine did the same yet cooling system was ok. Could also be a vacuum leak. Check al vacuum lines. __________________ "More torque less talk" 07-Astra OPC 04-Astra Coupe

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16-03-2006, 20:36	#2
BYRON AS Obsessed Join Date: Jun 2003 Location: Hants Drives: '58 BMW 120d MSport Posts: 6,515	what engine you got? Have you physically checked the coolant level in the header/expansion bottle?

18-03-2006, 18:39	#3
turboed AS Newbie Join Date: Sep 2004 Location: London Drives: Car mods and hitting little white balls Posts: 81	Yes the leval is correct and flows fine once up to temp and the cool running stat opens, very stange that it flickers more when cold

18-03-2006, 21:42	#4
glen AS Regular Join Date: Feb 2006 Location: TAMWORTH Posts: 102	i had the same sort of problem and when i had it checked it was the water pump leaking!

19-03-2006, 13:36	#5
BYRON AS Obsessed Join Date: Jun 2003 Location: Hants Drives: '58 BMW 120d MSport Posts: 6,515	My computer flashed up that the Coolant level was low on Tuesday, and to my surprise the header bottle was almost empty....strange as Im positive it was all there on the previous saturday. Then last night the light computer flashed it up again! Checked the level this morning and it was fine. Reckon a trip to vxl maybe in order.

20-03-2006, 13:44	#7
BYRON AS Obsessed Join Date: Jun 2003 Location: Hants Drives: '58 BMW 120d MSport Posts: 6,515	flashed the warning up again this lunchtime...checked the coolant and it was fine. The day I ignore the warning will be the day there really is no coolant!

22-03-2006, 15:53	#8
dazerc AS Fanatic Join Date: Jan 2004 Location: Wiltshire Posts: 1,484	had this light come on intermitantly on my car and the engine temp gauge showed 0 even though the car was hot. replaced the engine temp sensor and it cured it. this was after my vaux dealer replaced the stat but not the sensor that goes into the stat

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