Underheating
Forum rules
One question per topic.
Petrol engine related faults, like injectors, error codes, overheating.
You can post more topics if necessary, but only one question per topic.
One question per topic.
Petrol engine related faults, like injectors, error codes, overheating.
You can post more topics if necessary, but only one question per topic.
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My Name: Gibbo300
- Posts: 13
- Joined: Sun Feb 04, 2018 2:53 pm
- Model: C3 2002-2005, Original shape model
- Year: 2005 (05)
- Engine Size: I dont know
- Fuel Type: Petrol
- Mileage: 80000
- Gearbox: Manual 5 speed
- DPF: No
- LHD or RHD: RHD (UK)
Have changed thermostat and bled the system via the 2 bleed screws but still only shows 1 or 2 bars lit up on the temp guage and the heater only blows warm air not hot. Any ideas ?
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My Name: C3CAR
- Posts: 2815
- Joined: Wed May 04, 2011 10:01 am
- Model: C3 2002-2005, Original shape model
- Year: 2002 (02)
- Engine Size: 1.4 (16v)
- Fuel Type: Diesel
- Mileage: 140000
- Gearbox: Manual 5 speed
- DPF: No
- LHD or RHD: RHD (UK)
- Engine name: DV4 16-valve diesel (90 PS)
- Has thanked: 220 times
- Been thanked: 109 times
Hi Gibbo300Gibbo300 wrote:Have changed thermostat and bled the system via the 2 bleed screws but still only shows 1 or 2 bars lit up on the temp guage and the heater only blows warm air not hot. Any ideas ?
Was there a problem before you changed the thermostat?
Have you bled all the air out after you filled it using a header tank, as shown in this Citroen C3 Coolant topic?
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My Name: Gibbo300
- Posts: 13
- Joined: Sun Feb 04, 2018 2:53 pm
- Model: C3 2002-2005, Original shape model
- Year: 2005 (05)
- Engine Size: I dont know
- Fuel Type: Petrol
- Mileage: 80000
- Gearbox: Manual 5 speed
- DPF: No
- LHD or RHD: RHD (UK)
Hi. I changed the thermostat in case it was stuck open but has made no difference. Have now plugged a obd reader in and the temp gets up to 90 degrees but the heater is still luke warm. I have bled the system but not using the header tank method as shown. Will have to try that. Maybe the heater matrix is blocked and needs a flush out as when I turn the heater blower on its initially hot but then goes to warm.
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My Name: C3driver52
- Posts: 2013
- Joined: Sat Apr 30, 2011 7:40 pm
- Model: C3 2002-2005, Original shape model
- Year: 2003 (03)
- Engine Size: 1.4 i
- Fuel Type: Petrol
- Mileage: 79984
- Gearbox: Manual 5 speed
- DPF: No
- LHD or RHD: RHD (UK)
- Engine name: TU3 (75 PS)
- Has thanked: 146 times
- Been thanked: 78 times
Hi, did you manage to flush the heater matrix and get the heater working again?
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My Name: Gibbo300
- Posts: 13
- Joined: Sun Feb 04, 2018 2:53 pm
- Model: C3 2002-2005, Original shape model
- Year: 2005 (05)
- Engine Size: I dont know
- Fuel Type: Petrol
- Mileage: 80000
- Gearbox: Manual 5 speed
- DPF: No
- LHD or RHD: RHD (UK)
Not had a chance to do it yet. I don't think it's that though. The gauge still only shows 1 bar lit up as if the thermostat is open all the time.
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My Name: Missing Lincs
- Posts: 844
- Joined: Mon Mar 05, 2012 9:29 pm
- Model: C3 2002-2005, Original shape model
- Year: 2004 (04)
- Engine Size: 1.1
- Fuel Type: Petrol
- Gearbox: Manual 5 speed
- DPF: No
- LHD or RHD: RHD (UK)
- Engine name: TU3 (75 PS)
- Location: United Kingdom
- Has thanked: 46 times
- Been thanked: 35 times
Are the hoses to and from the radiator getting hot?
If at first you don't succeed, destroy all the evidence and pretend you never tried 
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My Name: Gibbo300
- Posts: 13
- Joined: Sun Feb 04, 2018 2:53 pm
- Model: C3 2002-2005, Original shape model
- Year: 2005 (05)
- Engine Size: I dont know
- Fuel Type: Petrol
- Mileage: 80000
- Gearbox: Manual 5 speed
- DPF: No
- LHD or RHD: RHD (UK)
Hoses are hot so I have put cleaner in the system to see if that helps.
