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 Posted: Sun Oct 27, 2019 7:11 am |
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Joined: Jul 11, 2011
Posts: 95
Trade Rating: 0
Location: Kent
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Hello, me again!
The heater controls in SWMBOs old 1.4i 2000 206 seem to work other than nothing gets hot or even warm from the vents.
A mate reckons "common fault.....a bit of plastic breaks on them" but as to what???
Any pointers?
I'm planning to do a coolant flush and new radiator shortly, maybe that'll sort it?
Cheers
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| ..........I can\'t help it I just like French cars! | |
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Posted: Sun Oct 27, 2019 4:36 pm |
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Joined: Feb 07, 2010
Posts: 2718
Trade Rating: +6
Location: UK
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Pull the heater controls off, it will be a clip on the back. As long as it manual control, not auto climate control. Does the control feel loose?
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Posted: Sun Oct 27, 2019 9:38 pm |
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Joined: Jul 11, 2011
Posts: 95
Trade Rating: 0
Location: Kent
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Thanks will try that and report back.
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| ..........I can\'t help it I just like French cars! | |
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Posted: Mon Oct 28, 2019 8:09 am |
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Joined: Jul 11, 2011
Posts: 95
Trade Rating: 0
Location: Kent
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Not pulled the controls out yet but SWMBO reports "the heater gets warm if the engine gets hot". What she means by that is if the wate in the expansion bottle gets low. Rad is leaking but I've got a new one. Hoping as I say a good flush might cure rather than it being something else. Water in expansion bottle is pretty "brown".
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| ..........I can\'t help it I just like French cars! | |
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Last edited by clicon357 on Tue Oct 29, 2019 5:01 am; edited 1 time in total
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Posted: Mon Oct 28, 2019 8:17 pm |
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Joined: Feb 07, 2010
Posts: 2718
Trade Rating: +6
Location: UK
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Ypuve lost me on your last pst, but if youve got a dodgy radiator that might be your problem!
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Posted: Mon Nov 11, 2019 9:35 am |
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Joined: Jul 11, 2011
Posts: 95
Trade Rating: 0
Location: Kent
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An update. Went to change the radiator. All looked good size wise comparing new to old. Ran a cleaner through the system before draining down. Took the old rad off and flushed out lots of old rusty crud. Went to put the new rad on and realised it needs another of the little rubber blanking caps/jubilee clips for one of the unused ports.
Put the old rad back on for now. Filled up with coolant and bled.
Running as before but still no heat from the heater.
Is it worth changing the thermostat?
As an aside as I was topping up the expansion bottle I spilt water down over the auxilliary belt and the annoying whine that's been there for years disappeared. Came back soon enough though, guess the water acted as a lubricant? Suspecting maybe the alternator tensioning pulley as if, with the engine running I squirted water at that from a plant sprayer the noise stopped.
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| ..........I can\'t help it I just like French cars! | |
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Posted: Tue Nov 12, 2019 7:56 am |
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Joined: Jun 19, 2010
Posts: 1600
Trade Rating: +4
Location: South Bucks
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Air lock in the heater matrix possibly. Or it's the heater controls and it's failing to open the vents to allow the warmer air out.
What temp is the engine getting to? A 206 thermostat gets stuck open so fails to warm up as quick as it should. It should get to normal operating temps in about 2-3 miles of normal driving (5-6 mins?). It is taking longer then you might need a new one of those too.
And yes, if you spray water on the tensioner and it stops the noise, you need a new tensioner.
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| Down to just the 1.4 HDi. Cayman Green 2.0i CC sold. | |
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Posted: Tue Nov 12, 2019 11:05 am |
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Joined: Jul 11, 2011
Posts: 95
Trade Rating: 0
Location: Kent
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| gazza82 wrote: |
Air lock in the heater matrix possibly. Or it's the heater controls and it's failing to open the vents to allow the warmer air out.
What temp is the engine getting to? A 206 thermostat gets stuck open so fails to warm up as quick as it should. It should get to normal operating temps in about 2-3 miles of normal driving (5-6 mins?). It is taking longer then you might need a new one of those too.
And yes, if you spray water on the tensioner and it stops the noise, you need a new tensioner. |
Thanks. Went out with an infra red laser thermometer. Ran the engine for 15 minutes, revved it a bit to get the temperature up. It wasn't that cold to start with:
Temperature gauge sitting at 90degC - halfway
Where the thermostat fits to the block, block side at about 90-95degC. Rubber top hose immediately after the stat 70degC. Top hose where it enters the rad 65degC.
Bottom hose cold by comparison, 30degC
Rad itself cold all over to the touch
Hoses on the bulkhead to the heater. Top one with the bleed screw 30degC. Bottom one 50degC.
Put heater on inside car, lukewarm.
Just to note it didn't feel tbh like there was water in the top hose to the radiator. Easy to squeeze and not "firm".
Could this be a thermostat issue?
Just got a new one to fit and it says 89degC on it.
Cheers
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| ..........I can\'t help it I just like French cars! | |
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Posted: Wed Nov 13, 2019 8:02 am |
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Joined: Jun 19, 2010
Posts: 1600
Trade Rating: +4
Location: South Bucks
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Could be a stuck thermostat but it also sounds like it's got air in the system if top hose is soft ..
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| Down to just the 1.4 HDi. Cayman Green 2.0i CC sold. | |
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Posted: Wed Dec 04, 2019 8:47 pm |
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Joined: Jul 11, 2011
Posts: 95
Trade Rating: 0
Location: Kent
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Update. Changed the radiator (leaking) and thermostat (all red rust). Got up to temp and stat opened with a "whump" taking all the water from the expansion bottle. I rapidly topped up of course. Top hose on rad getting nice and hot. Fan coming in as it should.
I assume the stat stuck closed was why I only managed to drain 3L of coolant off originally when the book says 6?
I bled the top hose to the matrix and water coming out nice and hot but still no heat in the cabin. Matrix change next!
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| ..........I can\'t help it I just like French cars! | |
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Posted: Wed Dec 04, 2019 8:48 pm |
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Joined: Feb 07, 2010
Posts: 2718
Trade Rating: +6
Location: UK
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I always take the thermostat out when draining coolant on a system. Good to see your getting somewhere though
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Posted: Thu Dec 05, 2019 10:12 am |
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Joined: Jun 19, 2010
Posts: 1600
Trade Rating: +4
Location: South Bucks
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| clicon357 wrote: |
| I assume the stat stuck closed was why I only managed to drain 3L of coolant off originally when the book says 6? |
You can only get it all out but turning the block upside down! 
| clicon357 wrote: |
| I bled the top hose to the matrix and water coming out nice and hot but still no heat in the cabin. Matrix change next! |
Did you have the heater controls on hot when you refilled/bled it? If not it may still be air-locked.
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| Down to just the 1.4 HDi. Cayman Green 2.0i CC sold. | |
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Posted: Thu Dec 05, 2019 11:15 am |
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Joined: Jul 11, 2011
Posts: 95
Trade Rating: 0
Location: Kent
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| gazza82 wrote: |
| clicon357 wrote: |
| I assume the stat stuck closed was why I only managed to drain 3L of coolant off originally when the book says 6? |
You can only get it all out but turning the block upside down!
| clicon357 wrote: |
| I bled the top hose to the matrix and water coming out nice and hot but still no heat in the cabin. Matrix change next! |
Did you have the heater controls on hot when you refilled/bled it? If not it may still be air-locked. |
I had the heater set to hot and running on the highest setting as I was bleeding at the top matrix hose. To no avail unfortunately!
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| ..........I can\'t help it I just like French cars! | |
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Posted: Tue Dec 10, 2019 10:39 pm |
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Joined: Jul 11, 2011
Posts: 95
Trade Rating: 0
Location: Kent
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Update...
Car overheated on the school run. Top hose came away from the new thermostat housing I fitted last weekend. Not seen it (the old stat) yet or spoken to him but think the housing on the stat I fitted, split.
I was at work but BiL kindly replaced the thermostat and housing and topped up. His first guess was head gasket but now thinking water pump.
The water in the expansion bottle btw is clean as in not oily as far as I can tell.
Any suggestions?
Cheers
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| ..........I can\'t help it I just like French cars! | |
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Posted: Thu Dec 19, 2019 6:31 am |
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Joined: Jul 11, 2011
Posts: 95
Trade Rating: 0
Location: Kent
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Timing belt and tensioner done.
Water pump done, old steel impeller had disintegrated, new impeller is alloy. This can't have helped!
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| ..........I can\'t help it I just like French cars! | |
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