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Topic: Heater Air Locks (Read 845 times) |
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yangi
Newbie
Had Cossie for 9 months - now time to spend money!
Posts: 33
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Heater Air Locks
« on: Dec 28th, 2007, 6:20pm » |
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Hiya
Looking to try and get to root of 'yet another' Cossie Heater problem!
Heater was working fine until the summer when a hose split. Obviously lost most of the water but sorted it out. Didn't notice lack of heat until winter set in. Just had new water pump and thermostat fitted (seperate issue), but still heater is lacking in....... heat!
I think it could be airlocked and gonna tackle it tomorrow - got my clear pipe ready!
But when JohnnyCab says (see below) he removed the small pipe from the expansion tank, does he mean one of the two small return pipes, or the overflow pipe? I would assume one of the return pipes - but we all know about assumption 
Any advice pls
"Before refilling the system, I pulled off the small pipe on the expansion tank & pushed a three foot length of TRANSPARENT tubing into it up to about six inches. I then gaffa taped the other end to the under-bonnet so the top was two & half feet above the expansion tank (a couple of feet would probably be ok, it was just that this was the length I had). Next I re-filled the cooling system up to the max mark on the tank. I then started the engine (expansion cap off, but not sure it really matters)".
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Snoopy
Administrator
Very old.BAD tempered and missing friends.
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Re: Heater Air Locks
« Reply #1 on: Dec 29th, 2007, 8:00am » |
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On the cossie I think there are two pipes going to the expasion/ reserviour tank,
On the 2.3 used by Johnny there is only one ... I personally would suggest you use the LOWER of the two and clamp the other one off . BUT others might know more than me on this one . ( Ussually the case )
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ren
Full Member
95 N 2.9 24v Cossie Estate
Posts: 480
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Re: Heater Air Locks
« Reply #2 on: Dec 29th, 2007, 9:30pm » |
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did you sort the air lock,__where did you get the
thermostat from,__was it easily souced,_or was it
a long wait on delivery,__what was the cost,
regards
ren
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Jonnycab
Senior Member
Former owner of 2.3 Ultima Facelift saloon
Posts: 3900
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Re: Heater Air Locks
« Reply #3 on: Dec 30th, 2007, 3:33am » |
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Not sure about the cossie, but as long as it's a return hose that runs from a high point in the system (top rad pipe) to the cap on the expansion tank then it will suffice.
Running the car with the rad cap off & facing up hill should expell most air, but creating this higher point will assure all air is expelled, as it creates a much higher point of gravity.....& we all know that air will always rise to the highest point 
Hope this helps 
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yangi
Newbie
Had Cossie for 9 months - now time to spend money!
Posts: 33
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Re: Heater Air Locks
« Reply #4 on: Dec 30th, 2007, 11:26pm » |
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on Dec 29th, 2007, 9:30pm, ren wrote:did you sort the air lock,__where did you get the
thermostat from,__was it easily souced,_or was it
a long wait on delivery,__what was the cost,
regards
ren |
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Hi Ren
Got the Stat a while ago - September/October time - from Lifestyle Ford in Horsham. It was about 50 quid  Along with a new water pump at 125! Wasn't a problem getting either at the time.
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yangi
Newbie
Had Cossie for 9 months - now time to spend money!
Posts: 33
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Re: Heater Air Locks
« Reply #5 on: Dec 30th, 2007, 11:31pm » |
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on Dec 30th, 2007, 3:33am, jonnycab wrote:Not sure about the cossie, but as long as it's a return hose that runs from a high point in the system (top rad pipe) to the cap on the expansion tank then it will suffice.
Running the car with the rad cap off & facing up hill should expell most air, but creating this higher point will assure all air is expelled, as it creates a much higher point of gravity.....& we all know that air will always rise to the highest point |
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Thanks JC
Forgot yours was 2.3 version
Did the 3 foot tube, got fair amount of air out - but made little or b****r all difference to the heat coming through the vents 
Guess next job is a thorough flush through (with some Coca Cola.... other soft drinks are available  ) and see if that makes any difference.
If not its either bite the bullet and fit new heater or suffer with luke warm 
Cheers all
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ren
Full Member
95 N 2.9 24v Cossie Estate
Posts: 480
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Re: Heater Air Locks
« Reply #6 on: Dec 31st, 2007, 3:21pm » |
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yangi
thanks for the info,i got a quote for the thermo
£55.10 inc local Ford not got in stock haveing to
wait till the 3rd to order,
did the jc 3ft tube after abt 15 mins engine boiled
over chucked abt 1 1/2 ltrs of coolant on floor.
ren
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Jonnycab
Senior Member
Former owner of 2.3 Ultima Facelift saloon
Posts: 3900
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Re: Heater Air Locks
« Reply #7 on: Dec 31st, 2007, 8:34pm » |
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Hi ren ....are you sure there isn't a problem with the head gasket ?
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ren
Full Member
95 N 2.9 24v Cossie Estate
Posts: 480
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Re: Heater Air Locks
« Reply #8 on: Jan 1st, 2008, 4:07pm » |
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jonnycab
didnt think i had,went to a garage 17/12 regards no heat
i/d possfault as matrix blocked,put holts rad flush in see if
it would move it,ran car till 19/12 went back had coolant
replaced with fresh had car raised at front to expel air,no
heat,saw yangys post with your clear pipe method and tried
that,still no heat.
have no sign of water in oil,previously only lost small amounts of water which i put as loss to a/c system,
regards
ren
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Jonnycab
Senior Member
Former owner of 2.3 Ultima Facelift saloon
Posts: 3900
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Re: Heater Air Locks
« Reply #9 on: Jan 3rd, 2008, 12:40am » |
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Hi ren, regarding the boiling over. Assuming that the HG is fine & water pump is working okay & the rest of the cooling system is free from blockages, then the matrix must be well & truely blocked 
How hot is the matrix out pipe when the engine is warm ?
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ren
Full Member
95 N 2.9 24v Cossie Estate
Posts: 480
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Re: Heater Air Locks
« Reply #10 on: Jan 3rd, 2008, 9:43pm » |
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had the h/g checked today at garage all ok
the in pipe is slightly warmish to the out,so dont think
heat is getting to matrix.
so we trying locate a thermostat see if that working
b/f changing the matrix
ren
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Jonnycab
Senior Member
Former owner of 2.3 Ultima Facelift saloon
Posts: 3900
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Re: Heater Air Locks
« Reply #11 on: Jan 4th, 2008, 12:58am » |
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Good luck ren
Sorry yangi if your post seems to have been slightly hi-jacked....it wasn't intended
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yangi
Newbie
Had Cossie for 9 months - now time to spend money!
Posts: 33
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Re: Heater Air Locks
« Reply #12 on: Jan 6th, 2008, 6:34pm » |
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on Jan 4th, 2008, 12:58am, jonnycab wrote:Good luck ren
Sorry yangi if your post seems to have been slightly hi-jacked....it wasn't intended |
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No Worries - all in a good cause Still haven't sorted mine - it's luke warm, so unless we get a real cold snap I can't be a*sed to go out there and look at it any more
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ren
Full Member
95 N 2.9 24v Cossie Estate
Posts: 480
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Re: Heater Air Locks
« Reply #13 on: Jan 6th, 2008, 9:55pm » |
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yangi
thanks for the understanding re the hi-jack,got the thermostat on saturday cost £55.10p,going to garage tomorrow see cost and when can fit,not able to put car
on jacks and do job myself.
ren
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