Peugeot 405 Series II Heater Cores - Discovered by Alan S on ""
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  1. #1
    Local Tyrant gibgib's Avatar
    Join Date
    Mar 2000
    Sunshine Coast, Queensland

    Default Peugeot 405 Series II Heater Cores - Discovered by Alan S on ""

    Technical Article - 405 Series II Heater Cores

    Credit to: Bill McNamee
    Source: Peugeot Association of Canberra magazine - ROAR
    Their main site is:


  2. #2
    pur-john, not pew-john! peujohn's Avatar
    Join Date
    Jul 2002
    Lilydale, Melbourne


    A good article. It explains that instead of removing the entire dashboard to get access to the heater core, you can remove the glovebox and get in that way instead. The instructions are for Series II, but I know that you can do the same with the Series I. The Haynes manual, and some Peugeot repairers, say that you have to remove the entire dash - TAKE NOTE - you definitely don't have to. If your repairer says he's going to remove the dash to replace the heater core, take the car somewhere else. Removing the core thru the glovebox is not a big job at all.

    The article says that it's rare for a Series I heater core to fail, but I thought it was quite common.

    John W

    1979 Peugeot 504 GTI 2.2 litre 5 speed - 72 kW at the wheels

    1974 Peugeot 504 TI
    - now on the road

    2009 Peugeot 407 HDI wagon - family car

    Previous: 2005 407 HDI manual sedan, 1980 504 GL, 1990 405 Mi16, 1977 504 GL Special, 1984 505 SRD Turbo

  3. #3
    1000+ Posts cruiserman's Avatar
    Join Date
    Aug 2002


    Works very well too. I did two yesterday. Took 2 out put one in anyway. I would still only recomend this job to those with a well stocked grog cabinet, and I recomend before during and after.
    '94 405 SRBT

    '82 CX 2400 Pallas 5spd

    '77 CX 2400 Pallas 4spd manual Import

    '76 CX Super

    '05 WL Statesman

    '92 HZJ80 Landcruiser

  4. #4
    Gone Fishin' Ray Bell's Avatar
    Join Date
    Jun 2001
    Burpengary and Murrumburrah, Qld and NSW


    I was there when Bill actually installed one of these in a Series II 405 last week...

    Then Owen Wuillemin mentioned a further potential problem to me tonight... that overtightening the inlet/outlet fitting can actually cause it to leak as much as undertightening.

    A real can of worms, this one...

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