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Washed engine with hose now Service engine soon light is on help?

This is a discussion on Washed engine with hose now Service engine soon light is on help? within the General Help forums, part of the LSx Technical Help Section category; hey like title says I spray simple green on my engine and hosed it off... I stayed away from the ...

  1. #1
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    Washed engine with hose now Service engine soon light is on help?

    hey like title says I spray simple green on my engine and hosed it off... I stayed away from the PC... Ive done this before without having problems... didnt watch out for the air box could that cause something...it didnt come on until a few hours later after I washed and drove on it for a while... possible sensor went bad with water in it? should I take it to a dealer.. thanks guys

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    Either you got something wet or maybe just a coincidence. Before going to a dealer, go to Autozone and have them read the code(s) for free.

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    Kind of hard to tell you what to do if we don't know what the code is for. Borrow someones code reader or take it to Auto Zone.

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    ok Ill take it to auto zone tommorow... thanks guys... I let you know what they say and go from there

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    just a little fyi autozone in my area now charges to have this done..

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    You could disconnect the battery for like 10 minutes on the positive side of the terminals. Then again, im not sure, but i think it resets something in the computer and and the next time you go to inspection you might fail.

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    Cover up or remove as much as you can when cleaning the engine...cover the maf with a plastic bag or remove the lid/maf/bellow and block the TB opening, cover fuses...etc

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    Member keliente's Avatar
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    Quote Originally Posted by PureSpeed
    You could disconnect the battery for like 10 minutes on the positive side of the terminals. Then again, im not sure, but i think it resets something in the computer and and the next time you go to inspection you might fail.
    It would be a better idea to actually see what the code was instead of ignoring the problem until it takes out a few other components with it. But what do I know.

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    ^ good advice boss.

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    Well the light is a knock sensor.. mechanic says its not abig deal and that I should maybe try to spray contact cleaner in the connecton outside of the manifold... any idea where that is?

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    Quote Originally Posted by JehalinTA
    Well the light is a knock sensor.. mechanic says its not abig deal and that I should maybe try to spray contact cleaner in the connecton outside of the manifold... any idea where that is?
    Its under the intake manifold. Its most likely rusted and needs to be replaced.

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    Is there not an outside connector for the wire.. the machanic said there is a slight chance that water got to the actual sensor and probably just got the connector wet..

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    Do you have an after market Air filter that you cleaned that day as well?

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    There are two knock sensors under the intake. The front one has a connector to the back one (under the intake) then the wire for both goes to another connector behind the intake on the passenger side.

    Edit: Weird, site reversed my lost two posts.

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