Possible Heater Matrix Leak

[Richnd1974]

Hi All
So the suns out, out comes my R4 for a run around as my daily driver for a couple of days and just noticed traces of coolant on the floor mats, seems to be coming from the heater matrix - thoughts please, what could be the problem and how easy is it to remove it to take a look.. I am hoping it's a pipe clip or pipe that needs replacing.
Cheers
Richard

 

[Lobster]

I have exactly the same issue. I've been meaning to have a look at it but have kept putting it off although I can't see it being that big of a job. Only seems to drip intermittantly too, started doing it on the way to Thenay last summer but then hardly anything on the way back. Noticed earlier that there appears to be a small leak from the bottom hose as well. Suppose I'd better investigate properly...

 

[Richnd1974]

I was thinking should I run some radweld through the system see if it resolves and give me a temp fix..

 

[petak]

Mine heater matrix was leaking at valve for hot/cold
You can read it here
http://www.renault4.co.uk/forum/threads/what-have-i-done-r4-gtl.3996/page-15#post-50245

But to repair it you must remove cooling water pipes, dashboard and heater with ventilator. Quite job!
Good luck!