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        General >> Give/Need advice to/from others >> Heater Air Locks
        
(Message started by: yangi on Dec 28^th, 2007, 6:20pm)

Title: Heater Air Locks
Post by yangi on Dec 28^th, 2007, 6:20pm

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)".

Title: Re: Heater Air Locks
Post by Snoopy on Dec 29^th, 2007, 8:00am

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 )

Title: Re: Heater Air Locks
Post by ren on Dec 29^th, 2007, 9:30pm

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

Title: Re: Heater Air Locks
Post by jonnycab on Dec 30^th, 2007, 3:33am

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 :)

Title: Re: Heater Air Locks
Post by yangi on Dec 30^th, 2007, 11:26pm

on 12/29/07 at 21:30:34, 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

Hi Ren

Got the Stat a while ago - September/October time - from Lifestyle Ford in Horsham. It was about 50 quid :o Along with a new water pump at 125! Wasn't a problem getting either at the time.

Title: Re: Heater Air Locks
Post by yangi on Dec 30^th, 2007, 11:31pm

on 12/30/07 at 03:33:36, jonnycab wrote:

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 ;D ) 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

Title: Re: Heater Air Locks
Post by ren on Dec 31^st, 2007, 3:21pm

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

Title: Re: Heater Air Locks
Post by jonnycab on Dec 31^st, 2007, 8:34pm

Hi ren :)....are you sure there isn't a problem with the head gasket ? :)

Title: Re: Heater Air Locks
Post by ren on Jan 1^st, 2008, 4:07pm

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

Title: Re: Heater Air Locks
Post by jonnycab on Jan 3^rd, 2008, 12:40am

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 ? :)

Title: Re: Heater Air Locks
Post by ren on Jan 3^rd, 2008, 9:43pm

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

Title: Re: Heater Air Locks
Post by jonnycab on Jan 4^th, 2008, 12:58am

Good luck ren ;)

Sorry yangi if your post seems to have been slightly hi-jacked....it wasn't intended :)

Title: Re: Heater Air Locks
Post by yangi on Jan 6^th, 2008, 6:34pm

on 01/04/08 at 00:58:14, jonnycab wrote:

Good luck ren ;)

Sorry yangi if your post seems to have been slightly hi-jacked....it wasn't intended :)

:) No Worries - all in a good cause ;D 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 ;)

Title: Re: Heater Air Locks
Post by ren on Jan 6^th, 2008, 9:55pm

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