"STOP" light on 405 - HELP!

Discussion in 'Peugeot 405' started by sid, Jul 15, 2005.

  1. sid

    sid Guest

    1.9 non turbo diesel (1996 estate)

    I posted a message some time ago about "STOP" light not working.

    Shortly after I posted message about dash lights then they started working
    80% on start up (After oil change and a bit of Gunk spray clean up on engine
    block may have caused this - who
    knows? Weather as been very hot as well)

    Bit worried now as the "STOP" light comes on with the temp warning light at
    irregular intervals when the engine is running and up to normal temp - in
    fact showing 80C. (Peugeot handbook states 90c for normal temp) Fan operates
    when at 80c and even when engine switched off /ignition on, will operate
    down to under 70c.

    It does switch off at a lower temp as I waited for 15 minutes and the fan
    did start but stopped after a few minutes. Unlike my earlier 405 it does not
    run on for 12 minutes after ignition switch off.

    Could this just be a faulty sensor/faulty temp gauge or maybe water pump
    problem? Rad water
    level is ok, no sign of overheating, and no cap lift off to discharge
    water. No sign of bubbles in water etc.

    Are the temp sensors colour coded? where on engine block?

    Would it be prudent to have a compression test just to see if the head
    gasket is going - (New head gasket and only done 7000 miles since renewal)
    No sign of any oil leakage.

    Thanks for your help
     
    sid, Jul 15, 2005
    #1
  2. sid

    Reaf Guest

    Did you check the oil?

    hehe
     
    Reaf, Jul 15, 2005
    #2
  3. sid

    Reboot Guest

    Is there a 2 wired brown sensor switch on the thermostat housing ?
    If yes then there is a control unit to control the cooling fans & temp
    warning light.

    It is likely that the sensor as developed a bad connecton or failed, making
    the control unit to go into backup mode.
    ( i.e. fans running all time & warning light on )

    It is the same setup as the Xantia xud ( not HDI )with aircon.



    Hope this is any help to you, regards......
     
    Reboot, Jul 15, 2005
    #3
  4. sid

    sid Guest

    op is that I have just changed the oil - level is ok
     
    sid, Jul 17, 2005
    #4
  5. sid

    sid Guest

    gave the brown connector a wiggle and the fan stopped - could be a bad
    connection or going faulty -will get a spare for the scrappie. removing the
    connector makes the fan go into "Full speed " mode

    Hopefully problem sorted

    Many thanks for your help.
     
    sid, Jul 17, 2005
    #5
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