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Author Topic: HBV Faulty?  (Read 1217 times)

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omegalord

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HBV Faulty?
« on: 12 September 2007, 17:54:35 »
Hi,

Changed my rovker gaskets and all running fine. Then it started to idle rubbish (solved in another thread) , but noticed today when the fans are just about to kick on to cool the engine there is smoke coming from the back of the plenum , smells like steam.

Will this be the reason the car was getting red hot inside as it was doing it? So will it be the HBV Valve kaput?

 :y
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TheBoy

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Re: HBV Faulty?
« Reply #1 on: 12 September 2007, 21:23:22 »
Definately worth checking.

Is it pressurising too much?
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omegalord

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Re: HBV Faulty?
« Reply #2 on: 12 September 2007, 21:57:06 »
I think it is yeah. I get a whiff of coolant every so often. It does seem to be running a bit hot and when the fans kick in and i open the door i get a right waft of hot air around my ankles as i step out of the car.

 :y
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TheBoy

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Re: HBV Faulty?
« Reply #3 on: 12 September 2007, 21:59:48 »
Quote
I think it is yeah. I get a whiff of coolant every so often. It does seem to be running a bit hot and when the fans kick in and i open the door i get a right waft of hot air around my ankles as i step out of the car.

 :y
If it is pressurising a bit too much, its possible you may get coolant weeping from various connections.  Is top hose getting very hard?
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Dazzler

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Re: HBV Faulty?
« Reply #4 on: 12 September 2007, 22:00:44 »
Scuttle off and have a look, certainly sounds like the HBV.
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omegalord

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Re: HBV Faulty?
« Reply #5 on: 12 September 2007, 22:31:24 »
Would the hgb valve really cause these problems?

Seems to be running hot
Aircon doesnt push out cold air , just cool
Footwell seems very warm sometimes
rough idling
water a orangey colour

Such a little thing cause so much trouble  ;D

It
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Dazzler

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Re: HBV Faulty?
« Reply #6 on: 12 September 2007, 22:35:52 »
Yep, orangey water is either due to the coolant getting far to hot or it's in need of replacement and the system needs a damn good flush out. All the others are relative to HBV failure. HTH.
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omegalord

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Re: HBV Faulty?
« Reply #7 on: 12 September 2007, 22:51:48 »
Right ok. So is it best to totally drain the coolant , then replace the hbv , then refill with new coolant?

 :y
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TheBoy

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Re: HBV Faulty?
« Reply #8 on: 13 September 2007, 08:11:42 »
Quote
Right ok. So is it best to totally drain the coolant , then replace the hbv , then refill with new coolant?

 :y
Won't harm :y

Not sure about warm footwell though...
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Dazzler

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Re: HBV Faulty?
« Reply #9 on: 13 September 2007, 12:09:28 »
A little system flush wouldn't go amiss whilst your at it ;)
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