Coolant leak near firewall...(DOUBLE-SOLVED)! :) update

[406Break]

Hi all,
My pug has developed a leak.
Its the heater connections in the engine bay.
Does anybody know whats holding the coolant in the tubes.
O-rings or some special stuffing? What size, don't want to drain the system before having the rights parts.

[8Jb9]

I've replaced those two water hoses - replaced one, then turned out I also had to replace the other. Consider replacing them both, as one dripping on the other will mask any leak that one has as well.

As I recall the part you order will have all the right O-rings included, and the securing clip is what keeps it tight at the firewall. The other end is secured with a hoseclamp to the water distributor on the engine block (for the two V6's at least).

In the picture you can see the retaining clip that holds it secure to the fitting. Remove that one and it will come off without too much resistance.

Wasn't a bad job, but of course a bit messy. I drained the system first. If your coolant is sufficiently new you can perhaps route a hose from the drain point on the radiator and engine into a suitable coffee filter and collect it.

[406Break]

Got the price offer from my local pug stealer. 31€ for one, 35€ for the other...66€ for the set.

[406Break]

Moneyless like I am, decided to take the hoses off to see what diamete o-rings would fit.



Rough measure:
OD: 25-26mm
ID: 20mm
Thikness: 2,5-3mm

Will be using new o-rings. OD: 26mm; ID: 19mm; Thikness: 3,5mm

Let's hope they work

[dirtydirtydiesel]

Could you see any reason for the leak in the old o-ring ie: a split, if so then it should work a treat
A good tip while your doing this is to smear a small amount of red rubber grease around the o-ring before installing

Best of luck DDD.

[406Break]

Have been driving for a week now.

Changed the o-rings, put some lubricant on the pipe-ends, put the hoses back and DONE

NO LEAKS

[406Break]

One down, one to go...


No.5 has a crack in it. Ordered a new one 38€ with TAX. Not too expensive for a OEM part

[406Break]

Got the part, now to find the time to change it.

[406Break]

Coolant leaks NO MORE happy camper

[steve_earwig]

Ah, nicely done! 38 Eurines is pretty cheap, maybe they made too many...

Btw what are the fixings each end? Are they solid with an O ring?

[406Break]

Ah, nicely done! 38 Eurines is pretty cheap, maybe they made too many...

Btw what are the fixings each end? Are they solid with an O ring?

Yes. Those were 31,5x4 "sort of special PSA products" too.
Pipe OE nr. 1341 C3, o-rings OE nr. 1340 55. (3 pcs needed)

Pipe + o-rings = 38 + (1.5x3) =42.5€ for parts.

[rightclickfix]

hi lads, I've got a leak on a hose that sounds like the one mentioned in this thread. Its the left hose going into the bulk head that apparently links to the heater matrix. I'm doing an average of 100 miles a day 5 days a week atm and need it fixed asap. I'm keep topping it up daily to stop it over heating so need to get the o-rings asap or do I take it to a local garage? If you can link me to the right o-rings it may speed up the process as a garage may not have them in stock given the age?
oh its a 406 rapier hdi if that helps?

cheers
Andy