by iso188 on May 21st, 2009

iso188

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When i start my truck and shut it off,i hear a knocking noise coming from the passenger side dashboard.Sounds like someone is in there knocking.After i start driving it goes away.But when i shut it off it starts knocking again.all of my gauges read fine.

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Answers. 5 helpful answers below.

  • by Kizz miazz on May 21st, 2009

    Kizz miazz

    It sounds like pre iginition.
    http://en.wikipedia.org/wiki/Engine_knocking

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  • by Talamasca on May 21st, 2009

    Talamasca

    Had any heating or a/c problems lately?

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  • by Go know thyself is THE RED QUEEN on May 21st, 2009

    Go know thyself is THE RED QUEEN

    Carburator chugging?

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  • by straight-shooter on November 20th, 2009

    straight-shooter

    zoransim is most likely correct. Purge all the air from your cooling system or tell the rodent in your glove box to go back to sleep

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  • by zoransim on May 21st, 2009

    zoransim

    It may help to try clearing your cooling system from unwanted air, sound like you at some stage pour some water in your system without bleeding unwanted air
    to do this you have to open you radiator cap start you car and and run on for some time 10 minutes should do this will get the air out of cooling system wich creates this presure knocking sound whic probably comes from the car heating pipes or second radiator which is located (most of the times under dasboard ,,,it may just help worth trying,i had simulare problems on my F150

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You're reading When i start my truck and shut it off,i hear a knocking noise coming from the passenger side dashboard.Sounds like someone is in there knocking.After i start driving it goes away.But when i shut it off it starts knocking again.all of my gauges read fine.

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