Overheat and Leak... which came first + Part ID Needed

[mayk19]

My Bongo had various overheeting issues on Sunday, Wonder if anyone can point me in the right direction appreciate your help...

Driving Bacup to Sheffield, got to Matram roundabout after doing 65/70 for 20 mins and temp shot up and Hadon alarm started sounding, the low water alarm didin't sound. The temp dropped as soon as I started mooving again, like I was getting water through the system but hovered a little high in the que at Motram... there was a smell of coolant water but temp came down to 1pm on the dial.
Then had to climb the Snake pass heading to Sheffield, again temp started sounding at summit. So I pulled over and let it cool a littel, once again though, the temp dropped straight back to 1pm on the dial as sooon as I started rolling. On the final climb out of the Snake to Sheffield the temp went high again, the low level alarm never sounded.

As I pulled up on my drive I noticed a leek from, I think, one of the metal pipes for the rear heating (mostly removed by Wellhouse). Finally the low level alarm came on when I re-started the engine.

Questions are, did the leek cause the overheating OR did the overheating force the corrision in the pipe to leek... Why did temp go so high in the first place (trouble free all season this year)... Radiator OR thermostat need replacing ?

Amazingly a bit of plumbers tape has stopped the leek enougth for me to nurse him to the garage for repairs, I want to replace the pipe that is corroded, can any one ID this pipe and does anyone know where I can get a replacment part ?

Many thanks for Help.


Leek is at the point where the Red pipe T-section is, can see the bit of plumbers tape on the hole !

[munroman]

Hi Simon, no idea of cause and effect, but I would point out that 'someone' has been at that part of the cooling system, there is a factory hose clip halfway down a pipe where it shouldn't be, double clips on one connection, and a replacement hose going into the 'T' junction.

[mayk19]

yeh, A garage replaced a lot of pipes with new silicone ones, also, this is a wellhouse conversion so the rear heeting system was mostly removed by them. The Leak is actually a hole in the metal pipe at the T-Junction.

ta

[bongomadness]

Hi there try jas they are in guilford and they get their bongo parts from japan. I ordered all my heating pipes and hoses from them. Also if you look for the link here it will give you the part numbers from the diagram
http://www.lushprojects.com/bongopartsm ... mgno=.html hope this helps and good luck with getting yours sorted
Jayne

[mayk19]

many thanks Jayne / Kris !

[mayk19]

Thanks Kris, ID'd it S09A6122YA 612D1 PIPE,WATER

Cheers.

[bongomadness]

Thanks Kris, ID'd it S09A6122YA

thats what just went in ours. £83.00 plus vat so not a cheap pipe also to be safe we got the other 3 hoses .....a total of 158 quid plus 25 for the stat and probably another 100 for mechanic.
That big metal water pipe is not easy to get out either.
Sorry to be giver of bad tidings but at least you know what expense is involved.
Good luck with it.
Jayne

P.s its Jayne really....Kris never goes on computers.I just put Jayne and Kris so he felt good lol

[missfixit70]

Thanks Kris, ID'd it S09A6122YA

thats what just went in ours. £83.00 plus vat so not a cheap pipe also to be safe we got the other 3 hoses .....a total of 158 quid plus 25 for the stat and probably another 100 for mechanic.
That big metal water pipe is not easy to get out either.
Sorry to be giver of bad tidings but at least you know what expense is involved.
Good luck with it.
Jayne

P.s its Jayne really....Kris never goes on computers.I just put Jayne and Kris so he felt good lol

that was expensive , less than £50 from bongo bits - http://www.bongobits.co.uk/Main.asp?Pag ... Query=pipe

[321Away]

Before you subimt yourself to the nightmare of extracting that pipe (not a patch on trying to remove the aircon 1 that runs along the other side of the vehicle mind you!) i'd pull off the pipes and try re-securing them as i've seen a few cars dripping from that point that just needed the hose re-seated and secured.
julian

[mayk19]

thanks for advice Julian... is it tough to get to ? Its got a hole in it (you can see it) right at the elbow, I was hoping I could trim some off and move the pipe up but there is no way Unless I can get a T-Adapter of some sort... but thats going to be really custom.

[missfixit70]

Bearing in mind your rear heater is disconnected, you don't need the T piece. Where the black hose on yours loops, is just looping the heater supply & return which is not necessary, this can be blanked & is in fact blanked on those few bongos that left the factory without rear heating/ac fitted, as can be seen here on lushprojects diagram - http://www.lushprojects.com/bongopartsm ... 1of02.html - which shows the rear heater returns pipe work along with the ac pipework that runs under the passy seat, it's actually blanked at he rear of the passy seat as you can see by the inset diagram upper right.
I've blanked mine there & on the T piece where yours is leaking - http://www.igmaynard.co.uk/bongo/forum/ ... 0&start=45 - you may be able to cut the T piece back to good metal & reconnect the heater supply hose that goes over the starter motor there, making sure there're no sharp edges?
It's probably worth replacing the pipe though, if it's corroded in one place, chances are there's gonna be more along it's length.

[mayk19]

cool, thanks for the advice... Its in the Garage on Friday, I'll discuss with the engineer then.


Still can't figure out if there is another problem with the heating OR it was this leek that caused the issues...

[missfixit70]

Sounds to me like it's pressurising/airlocking - hence the low coolant alarm not going off, as the level isn't dropping. The fact that you smelt coolant probably indicates it pressurised & blew out of the header tank pressure cap.
The big question is where did the air get in? was it because of a weep that allowed air to be sucked back in when it cooled? or is it more serious & the head/gasket is suspect?

[mayk19]

good points.. (Although scary).. Not driven it since the weekend, checked the water level last night and it was down towards the bottom of the header tank but no water had escaped from the bunged up hole (dry towel under it to check).

If water blew out of the pressure cap...doesnt air replace it ? or is it one way ?

[missfixit70]

good points.. (Although scary).. Not driven it since the weekend, checked the water level last night and it was down towards the bottom of the header tank but no water had escaped from the bunged up hole (dry towel under it to check).

If water blew out of the pressure cap...doesnt air replace it ? or is it one way ?

Should be one way, shuts as soon as it's blown off the excess, but it is a vacuum release as well I think if it' creates too high a vacuum when cooling as it's a sealed pressurised system. Even if it did suck in a bit in the header, it wouldn't then create airlocks unless the coolant level in the header had emptied, allowing the air into the pipework.
I've got the high coolant alarm add on that squeaks & tells me if it does blow out any coolant, which it did just as I got home from getting back from the bash Mine's pressurising every time now after months of weird airlocks etc, kept finding hose weeps & stuff to explain away the airlocks, but I suspect my head/gasket started going back in April at Southern Softies, if not before (as Maxheadroom correctly diagnosed & I was suspecting but hoping it wasn't) as I 've been having weeps all winter from the silicon hose joints - cause or effect? Probably never know for sure, mine's certainly never overheated in my 3 years of ownership.