Hi
The car is not fitted with hydractive suspension. The temperature in summer time most of the time will not raise over 30 Celsius and on top of it , it happens also at the winter. The hiss comes from the engine area and it is accompanied with a click sound that is typical to a relay or a valve
Zohar
Xantia - Hiss sound long after parking the car
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Re: Xantia - Hiss sound long after parking the car
Xantia 2.0 16V Automatic make year 2000 LHD
Citroen C4 THP Automatic make year 2009 LHD
Citroen C4 VTS 2.0 16V make year 2006 LHD
Citroen C4 THP Automatic make year 2009 LHD
Citroen C4 VTS 2.0 16V make year 2006 LHD
- myglaren
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Re: Xantia - Hiss sound long after parking the car
Could it be the purge cannister activating randomly?
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Re: Xantia - Hiss sound long after parking the car
Is the purge cannister valve is powred when the car is parking i.e. when the car key is not in the ignition switch ?
Thanks
Zohar
Thanks
Zohar
Xantia 2.0 16V Automatic make year 2000 LHD
Citroen C4 THP Automatic make year 2009 LHD
Citroen C4 VTS 2.0 16V make year 2006 LHD
Citroen C4 THP Automatic make year 2009 LHD
Citroen C4 VTS 2.0 16V make year 2006 LHD
- myglaren
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Ooops.
Previously:
2009 Honda Civic :(
C5, C5, Xantia, BX, GS, Visa.
R4, R11TXE, R14, R30TX - x 4922
Re: Xantia - Hiss sound long after parking the car
Well, that is the question - perhaps it is being activated when it should not be due to some fault in the electronics.
Re: Xantia - Hiss sound long after parking the car
If by purge cannister valve you mean the valve that goes from the charcoal cannister to the intake manifold then no - that should never operate when the engine is stopped.
The whole reason for the cannister is to capture petrol vapours from the tank and store them rather than letting them escape - operating the purge valve when the engine is not running to suck the vapours in and burn them would just allow them to escape.
So if it's the purge solenoid operating after the engine has been off for 8 hours it can only be due to a fault. The purge solenoid would only cause a click though, unless there was a lot of pressure in the tank there wouldn't be a hiss.
So the fuel pump priming is still the main suspect as it would both click and hiss (the flow of fuel) and is able to run when the key is off - but it also shouldn't be operating that long after the key is off unless there is a fault.
To be honest if the car and engine are working fine I wouldn't be worrying about it.
The whole reason for the cannister is to capture petrol vapours from the tank and store them rather than letting them escape - operating the purge valve when the engine is not running to suck the vapours in and burn them would just allow them to escape.
So if it's the purge solenoid operating after the engine has been off for 8 hours it can only be due to a fault. The purge solenoid would only cause a click though, unless there was a lot of pressure in the tank there wouldn't be a hiss.
So the fuel pump priming is still the main suspect as it would both click and hiss (the flow of fuel) and is able to run when the key is off - but it also shouldn't be operating that long after the key is off unless there is a fault.
To be honest if the car and engine are working fine I wouldn't be worrying about it.
Simon
1997 Xantia S1 3.0 V6 Auto Exclusive in Silex Grey
2016 Nissan Leaf Tekna 30kWh in White
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1997 Xantia S1 3.0 V6 Auto Exclusive in Silex Grey
2016 Nissan Leaf Tekna 30kWh in White
2011 Peugeot Ion Full Electric in Silver
1977 G Special 1129cc LHD
1978 CX 2400
1997 Xantia S1 2.0i Auto VSX
1998 Xantia S2 3.0 V6 Auto Exclusive
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Re: Xantia - Hiss sound long after parking the car
Hi
Is there any temperature sensor that is used by the ECU to "know" is priming is needed ?
Thank
Zohar
Is there any temperature sensor that is used by the ECU to "know" is priming is needed ?
Thank
Zohar
Xantia 2.0 16V Automatic make year 2000 LHD
Citroen C4 THP Automatic make year 2009 LHD
Citroen C4 VTS 2.0 16V make year 2006 LHD
Citroen C4 THP Automatic make year 2009 LHD
Citroen C4 VTS 2.0 16V make year 2006 LHD