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2005 Bentley gt continental

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Old 06-11-2018, 02:38 PM
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Unhappy 2005 Bentley gt continental

Hi guys,

Car is as mentioned above.

Recently had an over heating issue and diagnosed to cooling fan modules.

Replaced both cooling fan modules, both temp sensors, checked cooling fans and lubricated. Replaced top coolant hose complete with original bentley new part. Previous had blown off and jubilee clip had come off.

New correct coolant added.

Car was running fine and staying at 90c and fans kicking in.

left it for some time as away and returned to find when sat in traffic, it starts to overheat again. whilst driving at steady speed with air flow car is fine at 90c.
If take it for run and leave to idle, after about 10 minutes, the temp starts creeping up until in the red. fans are coming on but at slow speed intermittently.

now, here is the thing- when switch it off from over heating the fans come on alternately at full speed for about 20 mins .

the other thing I have noticed the car is making a whirring sound whilst switched off, like a pump running.

this whirring sound will start, even if the car has not been run for days and I walk past and try the door to check its locked.

I have tried a couple of independants and spent a small fortune replacing parts, and really gettting to the point of selling because I cant cope with this after 6 months of not being able to use the car properly and spending money.

any advice please
 
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Old 06-12-2018, 12:40 AM
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steve.2.lowe is an unknown quantity at this point
Do you have VCDS?
 
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Old 06-12-2018, 01:44 AM
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Hi,

Thanks for the reply

I should have today or tomorrow, ordered it last week.

Whats your line of thinking?
 
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Old 06-12-2018, 02:13 AM
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steve.2.lowe is an unknown quantity at this point
I've been through quite a few issues with a 2004 GT and VCDS helped to pin point the issues.
I have the part numbers for the fans from Audi bypassing the Bentley premium, 3D0959453F left fan and 3D0959453G for the right fan.
 
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Old 06-12-2018, 02:47 AM
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I am sure vcds will show issue. Let us know.
 
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Old 06-12-2018, 10:03 AM
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Scanning the ECU's will establish a baseline. Additionally, consider a load test on the left side battery (USA). Electrical management problems can be exacerbated by a seemingly good but weak battery, some of the symptoms hint at that.

Internet diagnosis is difficult. The overheating description suggests a faulty coolant thermostat. Regrettably, the part is not cheap, and than labor.
 

Last edited by 1eapplebaum; 06-12-2018 at 11:21 AM.
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Old 06-12-2018, 03:21 PM
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Thanks guys, appreciate the input.

I should have the diagnostic software in a day or 2 and I will be back!


Thanks again.
 
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Old 06-14-2018, 02:22 PM
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Over heating issues bentley gt 2005

Hi Guys,

I have got the VCDS and apart from all the other random faults related to battery disconnections, this is what its showing in relation to my problems


10 Faults found:
18331 - please check DTC MEMORY of ECU number 2
p1923-008-
18335 - Relay for Aux coolant pump (j496)
p1927 -004- open circuit -intermittant
18080 - coolant fan control 1
p1672 - 004 - open or short to ground - intermitant
18308 - coolant fan control 2
p1900 -004 - open or short to ground - intermitant
18104 - powertrain data bus
18359 - Radiator fan 2 (v177)
p1951 -002 - movement restricted / jammed - intermittant
18358 - radiator fan (v7)
p1950 - 002 - movement restricted / jammed - intermittent
16455 - sensor for ambient air temperature (g17)
p0071 -004 implausible signal - intermittant
19537 - engine temperature too low
03081 - 008 --intermittent
Readiness :0000 1001


Please bear in mind, the fans are not stuck because they run free when they want to and I have checked them both and they are completely free, yes they may have got stuck for some electrical issue but no physical issue with fans.

Also, I have now raised the car from the front considerably to fill the coolant after releasing into container to measure... I believe I managed to get 15 litres max even by lowering and raising the car several times and releasing the lower hose completely.

I have now refilled the car with air pocket removal device made out of a 2 litre bottle cut from the bottom and it has managed to take a considerable amount of more water and the air bubbles took at least an hour to clear.

Could it have had an air lock only ?!!

I have listed the faults exactly as they came up on screen.

Thanks for you help, guys


Hammond
 
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Old 06-14-2018, 03:29 PM
Kes
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Hi, i just wondering could this be caused by faulty circulation pump? I replaced mine month ago, it start making noise. It's located near wiper mechanism with 2 solenoid valves on top.
 
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Old 06-15-2018, 12:09 AM
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steve.2.lowe is an unknown quantity at this point
Clear the faults and take it for a drive. Following that check again to see what faults are re-registered.
 
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Old 06-16-2018, 09:59 AM
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Very sound advice from Steve. If this is your first scan since you've owned it, the first history can be misleading. Do a global code erase. Drive the car up to the overheat point again, then do a fresh scan. Se what comes back.
 
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