Renault Scenic dies in the rain?
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Thread: Renault Scenic dies in the rain?

  1. #1
    Fellow Frogger!
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    Default Renault Scenic dies in the rain?

    RENAULT Scenic 2002

    The kids rang me the other night the Scenic died in the rain.
    Towed back to student digs.
    I had a look and as the daughter said the fuel pump was silent.
    Hot wired the pump and it worked.
    Checked the TDC sensor and changed some relays , fuses in bay all good but won't start.

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    oddly no engine warning light on the dash?
    getting it towed back home to sort it.

    Wonder if it will show a fault when I scan it but why no dash warning light?

    Any ideas?

  2. #2
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    The dash warning light might be a pre existing problem.
    Berridale likes this.
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    i will see if i can find it ,but i seem to recall someone having a problem with the plug socket connection at the tank pump ,i had a 405 with no power to pump and ended up damaged wire under the carpet ,,in that case the carpet was quite soggy ,pugs

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    i will see if i can find it ,but i seem to recall someone having a problem with the plug socket connection at the tank pump ,i had a 405 with no power to pump and ended up damaged wire under the carpet ,,in that case the carpet was quite soggy ,pugs just did the search and it appears we have both been down this road before in 2017

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    Scenic Mk I common problem after heavy rain, or washing car. Water drains down onto engine cover and fills sparkplug holes with water. To check, remove plastic engine cover and remove coils, easy stuff.
    I had occasional missing which stopped after engine warmed up, and was amazed when I went to change sparkplugs and found the plugs had been covered in water, judging by the rust level marks. Surprised that it had actually run at all.
    A possibility.

    Cheers.
    Berridale likes this.
    2004 Scenic I 2.0 auto (Hers)
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    Water in the spark plug wells wouldn't cause the fuel pump not to have power to it.

    I figure the rain may have something to do with it.
    Where is fuel pump relay, by the battery?
    Relay " A"?
    Will check for spark to see at what point the fault begins.
    Maybe nothing at the relay so no fuel pump or ignition?

    Car not arrived back yet on a truck.
    Last edited by Berridale; Yesterday at 02:50 AM.

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    Quote Originally Posted by Berridale View Post
    Water in the spark plug wells wouldn't cause the fuel pump not to have power to it.
    Sorry, I didn't realize the fuel pump wasn't working, I thought you had just tried to eliminate it.

    Sounds like you are on the track of checking ignition feed. Good idea.

    Cheers.
    Berridale likes this.
    2004 Scenic I 2.0 auto (Hers)
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    Car not arrived today, tomorrow.
    The daughter sent a picture of the relay/fuse panel.

    Facing into the engine bay there are on the RHS three black relays.
    To the left centre a violet and a orange larger relay.
    LHS are large fuses.

    *The centre black one is the fuel pump, can someone confirm this?
    This relay what else does it link to?
    Injection ignition?

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    Hi Berridale ,
    You might know this or I have misinterperated your earlier post, but if the engine does not start or if it stalls the fuel pump is turned off by the ecu. All cars ! So when checking it you must turn off the ignition then turn it on again, and the pump is energised for only about 30 seconds to bring the fuel pressure up to spec. If the engine starts it keeps going but if it does not get to a minimum RPM then the pump is turned off.

    So bear this in mind when checking the relay and pump. Most likely to be the spark but nothing is certain with cars. Is the timing belt OK. The assumption doing a no start check is that the mechanical parts are working as they should. So check that first. A weak spot is the timing belt etc.
    Jaahn
    Last edited by jaahn; Yesterday at 10:05 PM.

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    Jaahn,
    timing belt all good .
    Correctly, As you say the pump only operates for about 30 seconds, then turns off.

    Pump should prime before the starter is engaged but doesn't
    In my case the pump doesn't come on at all, not energised.

    What i did was hot wire the pump with a battery by the rear seat, pump works OK.
    The car wouldn't start, so its something at the front of the car, maybe relay not energised?
    You then think either/or both the injection and ignition not energised as well as fuel pump?

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