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Posted

Hi, I have Citroen Xantia 1.9td 1997 P reg and I've discovered a leak in front passengers seat around the footwell. The liquid looks like coolant/antifreeze, and I suspect it's leaking from radiator (heater matrix). My question is, how should I go about replacing the heater matrix, do I need to remove whole of interior front panel, if so how should I go about doing that?

 

Any useful help or advice will be much appreciated.

 

Thanks,

 

Alex

  • 5 months later...
Posted

hi this is real broblem with the xantia i have a 1994 td if it`s the same as mine the water is rain coming in by the heater air intake to fix mine i cut up a 1gall clear plastic container put it over the air intake and the front carpet dried up

the air intake has some finger sticking up that the air to get into the heater

hope this helps you arch

Posted

Hello,

 

If it looks like antifreeze and smells like it to, than the problem is with the radiator. There's a sure way to test it. Select the temperature to cold a blast the fan, than do the same with hot temperature, if it starts to leak, than the radiator is faulty. In the Xantia I, I think you have to take apart the entire dash board, to replace the radiator. It's not an easy job.

 

Good luke

  • 4 weeks later...
Guest Xantia Pilot
Posted

I have experienced this problem, and would expect that the level of coolant in your reservoir is falling. This is a danger signal Don't let it fall too far, or the engine can overheat.

And don't make up lost volume with water, because that will increase the stress on the seals in the heater matrix. I use 50% glycol in my radiator as an anti-boil strategy, for that very reason.

For me, this leak happened in summer, and I was able to implement a temporary fix by isolating both sides of the heater matrix by inserting industrial valves into the rubber lines.

After a 3 month rest, the flimsy seals in the heater matrix had (apparently) reseated, and the leak has not happened again.

The pressure in the cooling system peaks AFTER the engine is turned off, because heat stored in the head continues to transfer into the coolant - enough so to cause localised boiling, which expresses itself as pressure throughout the system. Hence the move to 50% glycol to prevent those hidden pressure excursions.

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