Urgent help needed
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tonyhall38

Original Poster:

4,194 posts

246 months

Tuesday 8th July 2014
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Just got this email from Jan Dunk area 16..... Can anyone help?




Hi Tony, seeing as you are the man who knows everyone and everything I am asking for your help please! Mick and I are on the Aston tour in Northern Spain and he is having trouble with the car overheating. He has noticed that the off side radiator cooling fan is not working so he changed the blown fuse for it , and then off we went only to find that it had blown again! We have had to re-fill the radiator as it has been boiling up and making some weird bubbling sounds in the heater matrix, which maybe an air lock. Seeing as we are in the middle of nowhere with a load of Swiss idiots who haven't got a clue (same for the English unfortunately!!) we don't have a hope in hell of ever getting back to blighty! Unless that is you can put this onto Pistonheads to see if anyone out there has got an answer as to why this has happened but more as to how we can resolve it. PRETTY PLEASE!!
Oh if you do by anychance get an answer, will you be an angel and text me back as I have no idea when I will next be able to get into my emails.
Thanks as always
Jan xx

V8LM

5,560 posts

239 months

Tuesday 8th July 2014
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Stone stuck in the fan stopping it from rotating?

F1 NDW

1,116 posts

176 months

Tuesday 8th July 2014
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Tony,
If he wants to continue making progress tell him to turn the air conditioning off (it will be putting a lot of heat in to the condenser which is in front of the radiator). If he can then keep moving at over 30 mph he should be able to keep things going without boiling over. In fact the faster he goes the better will be the cooling. I should imaging his problem has occurred going up a steep pass slowly. He still has one fan going so he is with a fighting chance I would think. He needs to let things cool down before he goes topping it up with cold water.

Gmw76

104 posts

181 months

Tuesday 8th July 2014
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Not sure which car but cooling system will get benefit of the one fan remaining. As said air con off. The reason I ask which car, is there anything else supplied off the same fuse which could be blowing it? Must admit it is likely to be fan though. Very carefully and with everything switched of and cooled down a prod at the fan may reveal ceased or free. Free is no gaurantee of no fault but would prove jammed or not.

Mark

AMDBSNick

7,221 posts

192 months

Tuesday 8th July 2014
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Why don't you call Bamford Rose biggrin

NeinFondue

860 posts

186 months

Tuesday 8th July 2014
quotequote all
F1 NDW said:
Tony,
If he wants to continue making progress tell him to turn the air conditioning off (it will be putting a lot of heat in to the condenser which is in front of the radiator). If he can then keep moving at over 30 mph he should be able to keep things going without boiling over. In fact the faster he goes the better will be the cooling. I should imaging his problem has occurred going up a steep pass slowly. He still has one fan going so he is with a fighting chance I would think. He needs to let things cool down before he goes topping it up with cold water.
Good advise Neil... Speaking from experience? biggrin

tonyhall38

Original Poster:

4,194 posts

246 months

Tuesday 8th July 2014
quotequote all
AMDBSNick said:
Why don't you call Bamford Rose biggrin
Well I would but they need help now....not in 6 weeks....Tosser

F1 NDW

1,116 posts

176 months

Tuesday 8th July 2014
quotequote all
NeinFondue said:
Good advise Neil... Speaking from experience? biggrin
Marel, don't take any notice of the little blue twerp!!!

Neil1300r

5,771 posts

208 months

Tuesday 8th July 2014
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AMDBSNick said:
Why don't you call Bamford Rose biggrin
rofl

Tony, what model / car?


Jockman

18,414 posts

190 months

Tuesday 8th July 2014
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F1 NDW said:
Marel, don't take any notice of the little blue twerp!!!
Oi.....I'm trying to watch the Germans destroy Brazil here !!!!!! rolleyes

Neil1300r

5,771 posts

208 months

Tuesday 8th July 2014
quotequote all
Jockman said:
Oi.....I'm trying to watch the Germans destroy Brazil here !!!!!! rolleyes
They don't need to try!

tonyhall38

Original Poster:

4,194 posts

246 months

Tuesday 8th July 2014
quotequote all
03 db7 vantage

cayman-black

13,268 posts

246 months

Tuesday 8th July 2014
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Neil1300r said:
Jockman said:
Oi.....I'm trying to watch the Germans destroy Brazil here !!!!!! rolleyes
They don't need to try!
Right . A slaughter.

NeinFondue

860 posts

186 months

Tuesday 8th July 2014
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F1 NDW said:
Marel, don't take any notice of the little blue twerp!!!
You're right... What could he possibly know about Astons anyway? Tricycles on the other hand yes

zvezdah

103 posts

296 months

Wednesday 9th July 2014
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you could also run the heater, that typically helps with cooling

Gmw76 said:
Not sure which car but cooling system will get benefit of the one fan remaining. As said air con off. The reason I ask which car, is there anything else supplied off the same fuse which could be blowing it? Must admit it is likely to be fan though. Very carefully and with everything switched of and cooled down a prod at the fan may reveal ceased or free. Free is no gaurantee of no fault but would prove jammed or not.

Mark

Jockman

18,414 posts

190 months

Wednesday 9th July 2014
quotequote all
NeinFondue said:
You're right... What could he possibly know about Astons anyway? Tricycles on the other hand yes
Harsh, but well balanced yes

LMV600

57 posts

221 months

Wednesday 9th July 2014
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With the engine cooled down they should manually check for free movement of the blades , if they are lucky then they may find something restricting its movement ( stray plastic bag ) or binding against the plastic surround . Comparing turning resistance against the good fan may indicate a dodgy motor ( one turning more freely than the other ) which if the case will draw excessive current and pop the fuse .Fan motor failures are not unheard of , so this may be the case here . As already mentioned AC off and heater on coupled with reduced engine RPM may be enough to keep it relatively cool .

mikey k

13,074 posts

246 months

Wednesday 9th July 2014
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LMV600 said:
With the engine cooled down they should manually check for free movement of the blades , if they are lucky then they may find something restricting its movement ( stray plastic bag ) or binding against the plastic surround . Comparing turning resistance against the good fan may indicate a dodgy motor ( one turning more freely than the other ) which if the case will draw excessive current and pop the fuse .Fan motor failures are not unheard of , so this may be the case here . As already mentioned AC off and heater on coupled with reduced engine RPM may be enough to keep it relatively cool .
yes good advice, all I can add is upping the fuse to the next ampage size may get it to work long enough to get home (if it turns by hand)

GTDB7

958 posts

198 months

Wednesday 9th July 2014
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Popping the bonnet when cruising on smooth roads would help vent a lot of heat.

Bearing in mind the DB7 bonnet opens the correct way for a V12 engine ;-)

Any wind whilst driving will press the bonnet down, and of course there is the safety catch too.

Those bonnets are heavy buggars too so no chance of it being pulled open at all.

You can also manage to fully latch one side only and leave the other side open a little :-)

No answers to the problem but a means to let some extra heat out.

Also removing the 3 plastic covers helps too ;-)


Gmw76

104 posts

181 months

Wednesday 9th July 2014
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Do not up the fuse size!! find the problem or mitigate with other cooling ideas. You don't want a fire or burnt out loom as well.

Mark