myeates
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| posted on 18/6/07 at 05:40 PM |
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VW Polo cooling problems
hi guys my VW polo has just started going wrong at the grand age of 16 with 170000 miles  (well got to die sometime) anyway it will keeps on
overheatin, but it doesnt do it all the time.
the first thing i see is the temp going up to 110º at which point i turn off, fan not going at this temp but even with the fan switched to go
constantly it still over heats, there is no thermostat in it at the moment as i thought that would cure it but it still has problems. its almost as if
the rad is not there sometimes as it can be running fine with the fan switching in traffic normally at others.
Mr RAC came out and had a look but said its fine as it wasnt overheating at that point and the head gasket is fine(think he thought i was crazy).
my second thought was that the water pump isnt working sometimes could this be the problem, there is no leaks anywhere.
sorry about my ramblings just wondering what is causing the intermitent problems.
any help greatfully received
regards
Mark
[Edited on 18/6/07 by myeates]
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bigrich
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| posted on 18/6/07 at 05:45 PM |
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i seem to remember from my dim and distant past the same problem on a polo we had in and the water pump impeller had parted from the shaft and
was'nt circulating coolant causing it to overheat and have a lukewarm heater
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A pint for the gent and a white wine/fruit based drink for the lady. Those are the rules
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rusty nuts
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| posted on 18/6/07 at 06:03 PM |
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Water pump impellers coming off is a common problem with polos. One clue is even when its overheating the heater will only blow cool air . Make sure
you fit a new thermostat at the same time. Fan not working could be?? because coolant is not circulating
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Humbug
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| posted on 18/6/07 at 06:12 PM |
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You could try turning things ar$e about face and going for a Locost rad 
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myeates
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| posted on 18/6/07 at 08:25 PM |
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bingo thanks guys at least you both said a similar thing will get new pump see if it sorts problem, hope so the cars got to last till locost is on
road then itcan die but not yet.
that is exactly what is happening i was sat in car while it was getting very hot with my hand over the vent saying this isnt 100 degree air then
thinking the gauge was wrong till it actually did get wet.
thanks very much
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big_wasa
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| posted on 18/6/07 at 08:37 PM |
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I had one where the stat would stick
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myeates
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| posted on 18/6/07 at 08:39 PM |
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no stat fitted, i took out to see it would fix it but didnt  looks like water pump tho
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Danozeman
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| posted on 18/6/07 at 08:44 PM |
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Sounds like water pump to me.. The impellors often come of Vw's.
Dan
Built the purple peril!! Let the modifications begin!!
http://www.eastangliankitcars.co.uk
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David Jenkins
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| posted on 18/6/07 at 08:57 PM |
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Better than a Mk4 Golf - apparently the flywheel has been known to un-rivet itself from the crankshaft... 
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myeates
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| posted on 23/6/07 at 09:22 PM |
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just got my water pump off to change (will be putting new one on anyway) and guess what? water pump looks ok the impeller is still intact is there
anything else it could be or could the impeller just be on its way out as the problem was intermitent
thanks again
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myeates
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| posted on 23/6/07 at 09:24 PM |
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just got my water pump off to change (will be putting new one on anyway) and guess what? water pump looks ok the impeller is still intact is there
anything else it could be or could the impeller just be on its way out as the problem was intermitent
thanks again
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rusty nuts
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| posted on 24/6/07 at 08:11 AM |
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The impeller is probably intact but spinning on the shaft . For some strange reason it can be an intermittant problem
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myeates
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| posted on 24/6/07 at 08:24 AM |
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ok did try to turn the impeller on shaft and couldne move it suppose it could be the heat
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