# Screeching noise after start up

**URL:** <https://forums.speedlife.net/t/screeching-noise-after-start-up/80754>\
**Category:** SON240sx Automotive\
**Created:** [March 20, 2004, 6:48pm UTC](https://forums.speedlife.net/t/screeching-noise-after-start-up/80754 "2004-03-20T18:48:40Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Drumatic](https://avatars.discourse-cdn.com/v4/letter/d/7c8e57/32.png) [@Drumatic](https://forums.speedlife.net/u/Drumatic)\
**Post date:** [March 20, 2004, 6:48pm UTC](https://forums.speedlife.net/t/screeching-noise-after-start-up/80754/1 "2004-03-20T18:48:40Z")

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I just recently purchased my 240sx, it runs good but lately after start up the car makes a loud screeching noise for about 7-10 seconds. When I rev the car the noise goes away. Does anybody eles have this problem?

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**Author:** ![mulrooneyryan](https://avatars.discourse-cdn.com/v4/letter/m/71e660/32.png) [@mulrooneyryan](https://forums.speedlife.net/u/mulrooneyryan)\
**Post date:** [March 20, 2004, 7:31pm UTC](https://forums.speedlife.net/t/screeching-noise-after-start-up/80754/2 "2004-03-20T19:31:45Z")

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i had that same problem, it ended up being a belt that needed to be tightend, or maybe you need new belts.

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**Author:** ![system](https://canada1.discourse-cdn.com/flex034/uploads/speedlife/original/2X/b/b7170c8eddc0b95ece6b88172b2f416a08489a45.png) [@system](https://forums.speedlife.net/u/system)\
**Post date:** [March 20, 2004, 9:32pm UTC](https://forums.speedlife.net/t/screeching-noise-after-start-up/80754/3 "2004-03-20T21:32:45Z")

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ya i also just had that problem, all i needed to do was tighten the belt

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**Author:** ![iQuAGoD](https://avatars.discourse-cdn.com/v4/letter/i/f05b48/32.png) [@iQuAGoD](https://forums.speedlife.net/u/iQuAGoD)\
**Post date:** [March 20, 2004, 10:19pm UTC](https://forums.speedlife.net/t/screeching-noise-after-start-up/80754/4 "2004-03-20T22:19:36Z")

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Most likely belt slippage. Check the tension on your belts by twisting them… if you can twist more than 90 degrees they are too loose…

Too tight is bad too, tighten till you can turn them 90 degrees and if the  
noise is still there they are probably worn out.

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**Author:** ![Drumatic](https://avatars.discourse-cdn.com/v4/letter/d/7c8e57/32.png) [@Drumatic](https://forums.speedlife.net/u/Drumatic)\
**Post date:** [March 21, 2004, 5:37pm UTC](https://forums.speedlife.net/t/screeching-noise-after-start-up/80754/5 "2004-03-21T17:37:12Z")

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Thanks for the great help guys, i will try that tomorow