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Author Topic: COOLANT LOSS  (Read 1452 times)

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greenman

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COOLANT LOSS
« on: 17 September 2010, 11:51:45 »
Checked coolant level yesterday.o.k. started up this morning coolant level check came on.Took about a pint to top up.Ran the car about 20 miles no loss of fluid.Before run no drips under car and no obvious signs of leak.Any ideas?
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Proz

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Re: COOLANT LOSS
« Reply #1 on: 17 September 2010, 12:07:28 »
Could be the HBV ... very common .
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Proz

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Re: COOLANT LOSS
« Reply #2 on: 17 September 2010, 12:12:29 »
My HBV went and i found a leak coming down behind the drivers side wheel ... with the car running and warmed up try changing the heater from hot to cold whilst looking for any kind of leak .
If your is 2.2 petrol the HBV is drivers side rear of the engine bay , funny saucer shaped thing .
Check it for leaks or staining  :y
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greenman

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Re: COOLANT LOSS
« Reply #3 on: 17 September 2010, 12:20:36 »
whats does HBV stand for?
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Proz

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Re: COOLANT LOSS
« Reply #4 on: 17 September 2010, 12:27:23 »
Sorry ... Heater Bypass Valve  :y
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Jimbob

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Re: COOLANT LOSS
« Reply #5 on: 17 September 2010, 12:27:38 »
Quote
whats does HBV stand for?

Heater Bypass Valve
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PhilRich

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Re: COOLANT LOSS
« Reply #6 on: 17 September 2010, 12:33:12 »
Now once more with feeling everyone......


HEATER BYPASS VALVE!!!!!!! ;D ;D ;D ;D ;D :y
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alpacino

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Re: COOLANT LOSS
« Reply #7 on: 17 September 2010, 13:16:16 »
can i ask is this expensive to fix ??? as my posts im having samish problem
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Proz

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Re: COOLANT LOSS
« Reply #8 on: 17 September 2010, 13:54:05 »
I think they can be awkward to get to but a new one from Vx is around the £30ish mark .
Just make sure that that is what the problem is though  :y
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greenman

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Re: COOLANT LOSS
« Reply #9 on: 17 September 2010, 15:17:53 »
Checked HBV dry and no stains around it.Drove 10 miles,once again no coolant loss.Mystery!
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alpacino

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Re: COOLANT LOSS
« Reply #10 on: 17 September 2010, 16:25:19 »
anyone have a picture of where it is located on a p  reg 2.5 v6??
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neilr

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Re: COOLANT LOSS
« Reply #11 on: 17 September 2010, 16:29:29 »
I dont have a picture but its hard to see as its behind the plenum at back of engine l/h/s looking form front of car. you need to take off scuttle to see properly.
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PhilRich

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Re: COOLANT LOSS
« Reply #12 on: 17 September 2010, 16:46:55 »
Quote
Checked HBV dry and no stains around it.Drove 10 miles,once again no coolant loss.Mystery!


 

You might simply have had a stubborn air lock which has now bled itself? Keep an eye on the coolant level for a while to be sure though  :y
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alpacino

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Re: COOLANT LOSS
« Reply #13 on: 17 September 2010, 16:54:44 »
is it a easy job to change hbv ?
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dbug

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Re: COOLANT LOSS
« Reply #14 on: 17 September 2010, 17:30:35 »
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is it a easy job to change hbv ?
Get plenty of plasters mate :y
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