Rattling noise at 1800RPM....? Baaaaaad Fuel Economy

Discussion in 'General Motoring' started by Ben Lessani, Feb 23, 2004.

  1. Ben Lessani

    Ben Lessani Guest

    Hi all,

    I've recently got a 1998 R Peugeot 306 and I've noticed a rattling
    sound when I rev the engine (either cold or hot/stationary or moving).
    It typically happens around 1800 RPM and sounds like something is
    knocking.

    Some people have diagnosed the problem as either,
    - Big end bearings
    - Crank pulley
    - Heat shield (Pug dealer mechanic)

    I know for a fact that the problem isnt the heat shield, simply
    because I ran the engine without it attached and it was still doing
    the same thing.

    I ran the engine whilst underneath the car to look for obvious
    vibrating objects, such as the exaust - but there was no movement
    whatsoever.

    ALSO, I have noticed bad fuel economy on the vehicle, I recently drove
    from Glasgow to Manchester and I filled the tank before starting, then
    when I got here I filled the tank again. I worked out the amount of
    litres of fuel used combined with distance to be 41 mpg - and that is
    simply motorway driving. When I drive in town etc, I get about 15 mpg.
    Something seems horribly wrong with that.

    Any thoughts ?
     
    Ben Lessani, Feb 23, 2004
    #1
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  2. Ben Lessani

    Lostin1999 Guest

    poss Catalytic converter breakdown...

    only because my mums Renault Laguna had similar symptoms and that was found
    to be the cause (and by the improvement in its power and economy since
    seems proven!!!)

    HTH

    Mark..
     
    Lostin1999, Feb 24, 2004
    #2
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  3. Ben Lessani

    Ben Lessani Guest

    I might get that checked out, has anyone else had this problem before ?
     
    Ben Lessani, Feb 26, 2004
    #3
  4. Ben Lessani

    Coyoteboy Guest

    bad fuel consumption? My 1.1 205 takes a full tank for 350 miles if I'm not
    doing a consistent 57mph, at which point i get a nice 450 miles per tank but
    dont get anywhere in a sensible time :D

    J
     
    Coyoteboy, Feb 27, 2004
    #4
  5. Ben Lessani

    Ben Lessani Guest

    "My 1.1 205 takes a full tank for 350 miles"

    How big is the tank on your car though ? Mine has a suprisingly large,
    60 litre tank.




    Ben
     
    Ben Lessani, Feb 29, 2004
    #5
  6. Ben Lessani

    G.T Guest

    Hello,
    60 ? 205s should have a 50L tank, 44L main tank, 6L res. tank.
     
    G.T, Feb 29, 2004
    #6
  7. Ben Lessani

    DervMan Guest

    It's quite common, sadly.
     
    DervMan, Mar 7, 2004
    #7
  8. Ben Lessani

    Ben Lessani Guest

    how can i check it myself, short of going to a garage to get it done.
    its just had an mot and its emmissions were fine - i can only guess
    this would be an indicator of a fault.


    ben
     
    Ben Lessani, Mar 7, 2004
    #8
  9. Ben Lessani

    DervMan Guest


    It would be difficult! :( These things can go quickly, so it may be worth
    getting another emissions test done. If you've not had the car long, you'll
    likely not notice a deterioration in performance and fuel consumption...
     
    DervMan, Mar 7, 2004
    #9
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