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Truck shakes during and after heavy rain

Discussion in '1st Gen. Tacomas' started by Cryceratops, May 23, 2012.

  1. May 23, 2012 at 6:32 PM
    #1
    Cryceratops

    Cryceratops [OP] Active Member

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    Like the title says my truck shakes when I'm idling or driving during heavy humidity. Any idea what it could be? I read some and found it may be the spark plugs but they were replaced about 15k miles ago.

    Hope you all can help out!
    <--- My truck specs
     
  2. May 23, 2012 at 6:55 PM
    #2
    webb323

    webb323 Well-Known Member

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    plug wires
     
  3. May 23, 2012 at 7:03 PM
    #3
    Cryceratops

    Cryceratops [OP] Active Member

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    So you think they've gone bad already?
     
  4. May 23, 2012 at 7:05 PM
    #4
    tacoftw

    tacoftw 5100s are the same price as spacers, seriously

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    if the rubber begins to dry out it will lose the seal against the plug, causing the moisture in the air to get inside the wire and ruin the electrical connection with the plug
     
  5. May 23, 2012 at 7:13 PM
    #5
    AcadianTaco

    AcadianTaco Well-Known Member

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    Had a similar problem with an old truck, when it rained it idled roughly. Basically when any one (or More) spark plug don't fire. In my case the problem was not the spark plug, it was the spark plug wires which were cracked. Current will always follow the path of least resistance. If the rubber coating of your spark plug wires are cracked, on a humide day the current may go to ground before it gets to the spark plug.
     
  6. May 23, 2012 at 8:10 PM
    #6
    Cryceratops

    Cryceratops [OP] Active Member

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    I'll make sure to check them tomorrow morning or whenever it stops raining. Thanks guys. I just needed to make sure that it was most likely either the wires or the plugs. I have an 01 so it shouldn't even have plugs right?
     
  7. May 24, 2012 at 4:14 AM
    #7
    Ga tacoguy

    Ga tacoguy Well-Known Member

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    :) If you do change your spark plug wires, you need to buy some Di-electric grease for the wires and apply the grease to both ends of the wire before you apply them to the engine. The grease will displace any water and prevent water from shorting the wires at the connectors in the future. It will not fix bad or broken wires, but you can apply the grease to the ends of old wires to protect them. You do not have to wait for new wires to use Di-electric grease.
     
  8. May 24, 2012 at 9:59 AM
    #8
    memario1214

    memario1214 Vivid Illumination Vendor

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    Im not positive but this is the first thing that came to mind for me... could there be water getting to the MAF?
     
  9. May 24, 2012 at 10:03 AM
    #9
    hookedontronics

    hookedontronics Well-Known Member

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    distributer cap, do you have those on the first gens? if you do that's what it is. used to happen on an older nissan pickup i had because it had a small crack in it
     
  10. May 24, 2012 at 3:59 PM
    #10
    hossmaster

    hossmaster Well-Known Member

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    next rainy night or very humid night pop the hood while the engine is running and see if there is a lightshow going on under there
     
  11. May 24, 2012 at 7:37 PM
    #11
    Cryceratops

    Cryceratops [OP] Active Member

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    Will do guys! I'll get back to you all when it rains again... shouldn't be too long hah. In the mean time I'll be changing the spark plugs still debating about the wires.

    -Actually just checked the humidity and it's at 88% and there was no arcing at all. I guess that's a good thing.
     
  12. May 26, 2012 at 2:06 PM
    #12
    Cryceratops

    Cryceratops [OP] Active Member

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    Just changed the spark plugs, cleaned the throttle body and MAF. Added TRD Throttle Body O Gasket too.

    I pulled out 6 NGK single electrode spark plugs :mad:

    My brother in-law that gave me the truck always took it to a shop.

    So this time I put in 6 Denso K16TR11's :cool:

    Hopefully this will help during the next torrential downpour (only happens during those times.)
     
  13. May 26, 2012 at 8:32 PM
    #13
    TacomaJPP

    TacomaJPP To secure peace, is to prepare for war

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    1995.5 to early 1997 had distributors. My 1997 didn't have a distributor but some did. No way an 01 has one.
     
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