# idle problem DSM

**URL:** <https://forums.speedlife.net/t/idle-problem-dsm/190803>\
**Category:** PittSpeed Automotive\
**Created:** [June 27, 2007, 5:02pm UTC](https://forums.speedlife.net/t/idle-problem-dsm/190803 "2007-06-27T17:02:26Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![BlackZ28](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/blackz28/32/5932_2.png) [@BlackZ28](https://forums.speedlife.net/u/BlackZ28)\
**Post date:** [June 27, 2007, 5:02pm UTC](https://forums.speedlife.net/t/idle-problem-dsm/190803/1 "2007-06-27T17:02:26Z")

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my 96 GST is having some idleing issues. first, it seemed like the throttle body is sticking slightly open, so i took off the charge pipe and cleaned the butterfly and surrounding areas. they’re now very clean. sometimes the car idles high (1000-2000 rpms) and at other times it idles normal. once the car is idleing normally, if i put a load on it (in gear + a/c) idle drops to what seems below 500 rpm. i’ve heard that DSMs have a common problem with IAC motor/valves, but i do not have a check engine light. any insight or suggestions are appreciated.

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**Author:** ![BlkP42E](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/blkp42e/32/5938_2.png) [@BlkP42E](https://forums.speedlife.net/u/BlkP42E)\
**Post date:** [June 27, 2007, 6:04pm UTC](https://forums.speedlife.net/t/idle-problem-dsm/190803/2 "2007-06-27T18:04:33Z")

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tps?

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**Author:** ![BlackZ28](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/blackz28/32/5932_2.png) [@BlackZ28](https://forums.speedlife.net/u/BlackZ28)\
**Post date:** [June 27, 2007, 6:57pm UTC](https://forums.speedlife.net/t/idle-problem-dsm/190803/3 "2007-06-27T18:57:54Z")

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got me honestly. i would have thought that if there is a problem, it would throw a code?

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**Author:** ![Converted2LSX](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/converted2lsx/32/5962_2.png) [@Converted2LSX](https://forums.speedlife.net/u/Converted2LSX)\
**Post date:** [June 27, 2007, 7:05pm UTC](https://forums.speedlife.net/t/idle-problem-dsm/190803/4 "2007-06-27T19:05:05Z")

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[http://www.vfaq.com/index-main.html](http://www.vfaq.com/index-main.html)

go to Intake. Subsection - Throttle body

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**Author:** ![BlackZ28](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/blackz28/32/5932_2.png) [@BlackZ28](https://forums.speedlife.net/u/BlackZ28)\
**Post date:** [June 28, 2007, 12:58pm UTC](https://forums.speedlife.net/t/idle-problem-dsm/190803/5 "2007-06-28T12:58:52Z")

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awesome website… thanks i’ll be testing my ISC with my meter this weekend.

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**Author:** ![T34418L31](https://avatars.discourse-cdn.com/v4/letter/t/e56c9b/32.png) [@T34418L31](https://forums.speedlife.net/u/T34418L31)\
**Post date:** [June 28, 2007, 6:53pm UTC](https://forums.speedlife.net/t/idle-problem-dsm/190803/6 "2007-06-28T18:53:09Z")

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Yea, ISC’s go bad often it seems. I ended up yanking mine out.