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displaying posts 1 to 10 of 10
| Author | Subject: Changing thermostat with possible waterpump failure. |
 cd52
Seasoned Pro  Location: Edinburgh Registered: 03 Jun 2003 Posts: 3,550 Status: Offline |
Post #1
Having a cooling issue at the moment. Overheating while running, all fans are kicking in no waterleaks to be seen anywhere and there is no sign of water and oil mixing in the water tank or in the oil so hoping nothing major. Just no cooling of the water so possible thermostat or waterpump impeller failure I think.The question is, if I replace the thermostat and it turns out to be the pump, can i still bleed the system of air properly? |
 Posted 18th Sep 2010 at 18:46
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ablister
Senior User  Location: fife Registered: 30 Oct 2005 Posts: 522 Status: Offline |
Post #2
yes, it'll be fine. Engine doesn't need to be running when bleeding the coolant system________________________________________ 306 rallye, Richard Longman enginerc10gt |
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Posted 19th Sep 2010 at 16:00
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justinaccurate
Seasoned Pro  Location: Cov Registered: 29 Apr 2006 Posts: 14,425 Status: Offline |
Post #3
really? I always thought you had to get it to a certain temp till the fans kick in so you know the water is circulating and all the air is pushed out the system |
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Posted 20th Sep 2010 at 18:44
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cosmic spanner
Moral objector  Location: North London Registered: 11 Oct 2004 Posts: 10,399 Status: Offline |
Post #4
yeah "the way I was taught" you need to run the engine 'til the thermostat opens. ________________________________________ Democracy is two wolves and a lamb voting on what to have for lunch....Liberty is a well-armed lamb contesting the vote. Project é - my 306 project thread. |
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Posted 20th Sep 2010 at 19:37
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cd52
Seasoned Pro Location: Edinburgh Registered: 03 Jun 2003 Posts: 3,550 Status: Offline |
Post #5
It's going in for a waterpump and timing belt/tensioner change on Thursday anyway so I'll just let the garage do it all for me. \saves me any hassle. |
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Posted 20th Sep 2010 at 22:58
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ablister
Senior User Location: fife Registered: 30 Oct 2005 Posts: 522 Status: Offline |
Post #6
use a modified bottle to fit over the expansion tank then fill with coolant (there's a proper peugeot tool for the jo . Open up bleed screws (heater matrix pipes, 2 on thermostat housing and radiator) and shut them when all the air has escaped and coolant starts to flow through them. Engine is not running when doing this. ________________________________________ 306 rallye, Richard Longman enginerc10gt |
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Posted 22nd Sep 2010 at 02:58
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mabgti
NV motors  Location: Bham tunnel @7400rpm Registered: 28 Aug 2003 Posts: 9,127 Status: Offline |
Post #7
being three bleed points on the gti6 there isnt a need to run it to temp.. but better safe than sorry ________________________________________ Team Supercharged Gti-6NV Motorsport Automotive Performance Tuning 0121 448 7515 ECU Remapping/ DPF removal VAG/BMW Diag and Option Coding Peugeot Planet ECU coding/transponder programming etc www.nvmotorsport.com Facebook Page Project S6 |
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Posted 22nd Sep 2010 at 05:50
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cd52
Seasoned Pro Location: Edinburgh Registered: 03 Jun 2003 Posts: 3,550 Status: Offline |
Post #8
Seems to be sorted now. Turned out to be the pump in the end. Impeller failure, pump was still turning from the engine but the blades had worked their way loose from the shaft. Thank God it was nothing more complicated.Finally have it back on the road after nearly 4 weeks  |
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Posted 24th Sep 2010 at 04:43
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silky
Seasoned Pro  Location: Chelmsford, Essex Registered: 29 Dec 2002 Posts: 3,470 Status: Offline |
Post #9
ablister wrote: use a modified bottle to fit over the expansion tank then fill with coolant (there's a proper peugeot tool for the jo . Open up bleed screws (heater matrix pipes, 2 on thermostat housing and radiator) and shut them when all the air has escaped and coolant starts to flow through them. Engine is not running when doing this. Can you go through that again step by step for me please ? Got to change the rad on my GTI this weekend so will need to bleed the system, thought engine had to be running for this |
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Posted 24th Sep 2010 at 15:10
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cosmic spanner
Moral objector Location: North London Registered: 11 Oct 2004 Posts: 10,399 Status: Offline |
Post #10
silky wrote: ablister wrote: use a modified bottle to fit over the expansion tank then fill with coolant (there's a proper peugeot tool for the jo . Open up bleed screws (heater matrix pipes, 2 on thermostat housing and radiator) and shut them when all the air has escaped and coolant starts to flow through them. Engine is not running when doing this. Can you go through that again step by step for me please ? Got to change the rad on my GTI this weekend so will need to bleed the system, thought engine had to be running for this I have replied in your other thread  ________________________________________ Democracy is two wolves and a lamb voting on what to have for lunch....Liberty is a well-armed lamb contesting the vote. Project é - my 306 project thread. |
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Posted 24th Sep 2010 at 16:10
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