307 110 HDI grinding sound when cold

Discussion in 'Peugeot 307' started by swebb99, Dec 16, 2007.

  1. swebb99

    swebb99 Guest


    My 307 SW HDI 110 has started making a strange grinding/rumbling sound
    when cold. I noticed it when pulling out of a car park and I thought
    there was a branch under the car or the plastic cover under the engine
    had dropped off and was dragging. It sometimes makes the noise when
    stationairy and out of gear also. It usually doesn't do it when the
    car just started but withing 10-50secs. I've noticed turning the air
    con on or lights can make it work. The sound only lasts for a short
    while, no more than 1 minutes and doesn't occur again until the car is
    started from cold.

    Once I caught it making the noise I had time to open the bonnet. It
    sounded like the noise was coming from the area around the belt
    driving the alternator. I noticed when the noise was being made that
    the tensioner on the belt moved around a lot more !

    I popped the car into a peugeot garage to get the crankshaft pulley
    checked as I'd heard that these can give way. They had a quick look
    and said it looked find and the belt tension was fine. The engine
    sounded fine when they looked because the car was warm.

    Any idea's ?
    swebb99, Dec 16, 2007
  2. swebb99

    Chrs Guest

    Replace the belt tensioner which i think you will find that is the
    problem..also replace the drive belt at the same time.
    Chrs, Dec 17, 2007
  3. swebb99

    Nigel Guest

    I would go for the pulley personally. Any signs of metal filings
    around the cover adjacent to the pulley?
    Nigel, Dec 17, 2007
  4. swebb99

    Gary G Jones Guest

    I had a grinding sound from my 406 HDI, it turned out to be the alternator
    bearings destroying themselves.
    New alternator and all was well again.
    Gary G Jones, Dec 18, 2007
  5. swebb99

    swebb99 Guest

    Thanks for the idea's guys. I've had to drop the car into the garage
    again. Last night on the motorway I could here a clicking like a relay
    in the glovebox, it clicked every now and again very quickly on/
    off(??) at the same time I noticed the front lights gave a flicker
    like they were either being dipped or turned off for a fraction of a
    second. It only seemed to do this about 70 and below that the clicking

    The grinding noise now only seems to happen when the car is moving in
    gear or out and still only when cold.

    I've asked the garage to check out both problems, they may be related.

    As for the Pulley the first time I took it in they had a quick check
    for metal fillings and didn't find any.

    Puzzled :(

    Hopefully they will spot something today when they start the car from


    swebb99, Dec 18, 2007
  6. swebb99

    Chrs Guest

    if they start it from cold ?or get some kid that starts it and dont
    listen for the noises
    Chrs, Dec 18, 2007
  7. swebb99

    swebb99 Guest

    Yes well they tried it this afternoon and didn't hear anything so I'm
    going over tomorrow morning to see if I can show them what the problem
    is !
    swebb99, Dec 18, 2007
  8. swebb99

    swebb99 Guest

    Typical went to the garage this morning to demo the problem and it
    didn't do it, well hardly, not enough to really track it down, just
    heard a few slight clicks and knocks which from under the bonnet
    sounded like the alternator ... arrrggggg

    Seems the be worse the colder it is, which makes me think is bearing
    swebb99, Dec 19, 2007
  9. they had the car in the garage overnight?
    Marc Amsterdam, Dec 19, 2007
  10. swebb99

    swebb99 Guest

    Yes because they wanted to run it from stone cold. There was a small
    noise for a short time but nothing like the racket it sometimes makes.
    swebb99, Dec 19, 2007
  11. swebb99

    Chrs Guest

    It sounds like a alternator bearing, when it gets hot it will make a
    very loud noise,getting ready to go BANG.remove the fan belt and start
    the engine up to see if the noise has gone.if not it could be water
    good luck finding it ..
    Chrs, Dec 19, 2007
  12. swebb99

    Brian Guest

    Been offline for a bit, so I may be too late to answer this.
    What year is the 307? They changed the crankshaft pulley early on (pre
    52 reg), and the new type does not disintegrate, it is very similar to
    the XUD type, you know the type I mean Chris????
    Anyway, this type also has a different alternator pulley with some
    sort of freewheel device built into it. I understand that this can
    give up, and cause noise. This could also affect the drive to the
    alternator, which in turn could cause relay issues.
    The tensioners normally don't give a problem on this model.
    Brian, Dec 30, 2007
  13. swebb99

    Chrs Guest

    Yes after many times trying too get one,then getting one and finding
    out it was the wrong one,but in the end i got one and replaced it with
    out any problem ,(just got to do the fan belt up a little bit more as
    it makes bit of noise first thing)well i hope it is the fan belt lol
    Chrs, Dec 31, 2007
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