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Corsa Sport » Message Board » General Chat » audi A4 coolent system problem -ongoing - still not fixed » Post Reply
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sparcost3 |
posted on 22nd Jan 15 at 19:17 |
yesterday i had no flow through the system (no return to header tank) and the radiator and bottom hose stone cold. | |
sparcost3 |
posted on 21st Jan 15 at 19:19 |
quote: that pipe was full of air, after testing flow through the radiator i filled it up with kettle water and ran it but it was still clod althogh now feels pressured. im thinking even though the thermostat is brand new, would it be worth removing all together to see if the radiator then gets flow? there is still no water returning to header tank even with a brand new waterpump | |
sparcost3 |
posted on 21st Jan 15 at 19:17 |
quote: no i am not loosing any coolent | |
sparcost3 |
posted on 21st Jan 15 at 19:16 |
quote: whats a plenum chamber ? i removed those 2 pipes next to the battery and proved there is flow through the matrix when conecting to a hose. however.... there seemed to be no flow coming out of those 2 hoses into the matrix even when revving engine? very strange | |
sparcost3 |
posted on 21st Jan 15 at 19:13 |
quote: did that yesterday, runs through totally fine. drove to work and felt the radiator after a 20 mile drive and the whole thing was stone cold...... top pipe hot and bottom pipe cold. that bottom pipe conects directly to the thermostat and even though ive replaced it it cant be working?? is it ok to remove it altogether and see if i get flow through the system without a thermostat? | |
Mattb |
posted on 20th Jan 15 at 21:49 |
Really does sound like you have an airlock. Take the plastic trim of the plenum chamber (the big mofo over the battery etc) there are two hoses that go into the heater matrix around the center of the bulkhead, one of these has a hole in. With the engine running, Loosen the spring clamp and pull the hose back, but not off so the hole is past the pipe for the matrix. This will bleed any air out the matrix. This is extremely common when the coolant system hasn't been vacuum bled. | |
carl roper |
posted on 20th Jan 15 at 20:45 |
Take the pipes off and run a hose through it to check? | |
sparcost3 |
posted on 20th Jan 15 at 20:35 |
quote: yep think so carl need to remove bumper to get it off not like on a corsa so maybe at the weekend or a weekend when its not -5..... | |
baza31 |
posted on 18th Jan 15 at 10:49 |
:lol: | |
sparcost3 |
posted on 18th Jan 15 at 10:19 |
Cheers for the replies lads I will try this todau | |
GB123 |
posted on 16th Jan 15 at 21:56 |
Check the door hinges | |
_Allan_ |
posted on 16th Jan 15 at 20:44 |
Ensure the rear seats are folded flat. | |
Brett |
posted on 16th Jan 15 at 19:16 |
and cross your fingers | |
pow |
posted on 16th Jan 15 at 17:17 |
And Jack the nose up in the air, have to do that to older 6 cylinder bmws | |
Steve |
posted on 16th Jan 15 at 10:35 |
And rev it too find that helps force out locks | |
ShEp |
posted on 16th Jan 15 at 09:35 |
Run it for 45mins with the header tank cap off and the heaters on full blast. | |
Steve |
posted on 16th Jan 15 at 09:14 |
The problem is until the stat gets hot enough it can stop the water getting into the radiator side of the system, but because there is no water round the back of the thermostat because of air it doesn't get hot enough, leading to catch 22. | |
SteveoBC |
posted on 16th Jan 15 at 09:12 |
quote: i was going to say water pump first as my dads one went (plastic impeller broke off so no pressure) but im going to think the same as the other steve here Must have an airblock in the system somewhere | |
IvIarkgraham |
posted on 16th Jan 15 at 01:16 |
are you losing coolant? | |
Steve |
posted on 15th Jan 15 at 19:25 |
have you bled it properly? | |
richardworrall |
posted on 15th Jan 15 at 18:27 |
can you disconnect a top pipe and blow the water through the system or hear air escaping as you do it? | |
carl roper |
posted on 15th Jan 15 at 17:38 |
Is the radiator blocked? Doesn't sound likenit flowing through it anyway | |
sparcost3 |
posted on 15th Jan 15 at 17:32 |
hi everyone, sorry its not corsa related.. but i was wondering if anyone can shed any light on my problem with my audi a4 estate daily. |