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Old 07-04-17, 03:01 PM   #1
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Default Some help from the gurus plz :-)

I bought a 207 cc 1.6 petrol 88 kw from 2007 for my wife the other day. While driving the car home i started getting a sweet smell in the car from outside while windows were open. Did a lot of reading and came to the conclustion that there was an antifreeze leak. Followed my nose and came to conclusion that thermostat housing was leaking somewhere. There were some antifreeze leak marks on exterior pipes. Ordered new part online. Part is exactly the same and fits perfectly except it had one extra pipe fitting. I blanked that out with a silicone plug which did the trick. Now here is where my problems start

I took a picture of pipes before removing thermostat not to forget....Unfortunatly my 6 year old daughter deleted the pics :-(

Have I reconnected pipes correctly?

2nd question :

I filled up anti freeze to minimal, opened heating inside car (not my AC) to max and started car. I saw immediatly that antifreeze started coming back into holder. Car worked for maybe 3 minutes, tempreture gauge inside did not move and all of a sudden went to MAXIMUM and got message to stop car. Fan started working. I immediatly turned car off. I have tested the electrical plugs of both sensors and i do get a current reading.

What am I doing wrong? Or is it the whole housing unit? I did try to find answers on the forum before asking, but did not find any.

Also when i drained old antfreeze, there was no oil mixed with it. So i take it that there is no cracked cylinder head or gasket blown.

Once again thanks to all that can help me out...

Last edited by henk; 08-04-17 at 04:39 PM.
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Old 07-04-17, 05:26 PM   #2
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Hi...you have an air lock in the cooling system....Im not familiar with that engine but if you top up the reservoir and with the engine off try squeezing the bottom hose and see if that
pushes the air to reservoir...that works on most ive worked on....
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Old 07-04-17, 09:45 PM   #3
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there is usually a bleed valve where the heater pipes go through the bulkhead.
looks like a tyre valve cap
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Old 08-04-17, 07:14 AM   #4
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on my 1.4 vti there is also another bleed screw on top of the therm housing
just behind the vacume pump.look down and you should see a black plastic cap.
its not a tyre cap its got a cross on it for a large flat screw driver.
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Old 08-04-17, 08:59 AM   #5
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Hi noddy-hol

I have done that. I have "pumped" all the pipes. every time i pump i see the anti freeze going back into reservoir.

I have also bled the system " according to service book " both on thermostat and heat exchange pipe. What I do find strange, (according to service book) is that when you bleeding system, at heat exchange pipe (Where it goes into car heating system) it starts flowing out freely and its supposed to flow out freely on thermostat bleeder too. It doesnt. even if i leave bleeder off... yet with car working it does flow freely through that bleeder.

This morning car was cold, started it up and within 1 min......from gauge showing 70 it shot right up to Red area maximum and fan started working right away and got warning to stop car....
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Old 08-04-17, 09:03 AM   #6
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Hi Matty..

Yep there is and I have bled it there. Its free flowing when open to bleed.
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Old 08-04-17, 09:08 AM   #7
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Hi marrygold

Yes indeed there is. As i told noddy-hol, I have opened it up to bleed. According to service manual its supposed to also flow freely before tightening screw with engine off. It doesnt. Yet with engine running , it starts free flowing...I found out the hard way with antifreeze shooting up into face :-)

Im almost tempted to refit old thermostat housing just to check. I dont think it has to do with new housing part having a blanked off fitting as it is sold as being for my 207 cc
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Old 08-04-17, 09:12 AM   #8
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Hi.....is the temp sender in the housing...did the new housing come with one?if it did replace with the old one....sounds now like a faulty temp sender..i doubt if 1 min of running will overheat ,...I might be wrong tho..
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Old 08-04-17, 09:21 AM   #9
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Yes indeed it did come complete with a new one fitted. Give me a couple o minutes and ill let you know if it makes a difference....
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Old 08-04-17, 09:33 AM   #10
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Quote:
Originally Posted by noddy-hol View Post
Hi.....is the temp sender in the housing...did the new housing come with one?if it did replace with the old one....sounds now like a faulty temp sender..i doubt if 1 min of running will overheat ,...I might be wrong tho..

Nope....changed the new temp sender with my old one....started engine....less than i minute, temp gauge went to max and fan started immediatly

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