does the cold affect the turbo
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  1. #1
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    does the cold affect the turbo

    this is very strange. In warmer weather the turbo has this low pitch long sound in cold weather there is this high pitch short sound u can barely hear it. My question is does the weather affect the turbo or is there something wrong with my turbo

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  3. #2
    nm+
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    Well technically, cold weather could cause metal to shrink a bit, increasing noise. However, I dunno what is normal in the turbo though.
    Also, you're going to have to define cold?
    California cold (40F)
    New York cold (20F)
    Minnesota cold (-10F)
    Calgery/Winnipeg cold (Ice Planet Hoth ~-40f)

  4. #3
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    Pennsylvania 10F-30F when the temp is around 35f and up the turbo sounds good and everything. In both cases I can feel the boost and everything the car picks up the same. The only thing thats bugging me is the wierd sound. in cold there is this sharp ffffffff for a couple of seconds and you can barely hear it. In warmer weather theres this smoth sound

  5. #4
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    the turbo has to work a lot less to move the same amount o air in cold weather, so the change in noise could just be the difference in the strain on the turbo and its operating speed.

    unless there is a performance loss, or you can log and document operating issues, my guess is that everything is working to spec.

  6. #5
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    I checked the vac lines and I didn see any boost leak or anything. Maybe u right ModofiedA4 since in cold weather the turbo works less due to the air being cold and everything

  7. #6
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    Cold air might affect your turbo, but my guess is only if two things are happening, your bearings are getting worn and the oil passages are getting sludged up. Other than that cold air is more dense and unless it is really loud and performance has dropped, drive until it dies.

  8. #7
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    southern california had a cold snap a few weeks ago. that was my first time driving my passat in the cold (below freezing) without a car full of ski equip. the car was an absolute rocket with the intercooler chilled down like that...

    i can barely hear my turbo ever, though.

  9. #8
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    IIRC, the engine management takes the ambient temperature into account while controlling the boost....I don't think you get full boost when it's really cold out.

  10. #9
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    yeah my car feels a lot faster in cold temperatures, it feels like its easier for the turbo to work.

  11. #10
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    yes Turbo's LOOOOOOVE Cold air...mmmmm, my car feels like a monster in cold weather

  12. #11
    1st Gear
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    oh yeah, turbos love the cold like fat kids like candy!!! hense the names, interCOOLER, COOLAIR intake, colder air is better for your engine.

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