# 1997 Saab 900s - Idles rough in drive at stop

**URL:** <https://community.cartalk.com/t/1997-saab-900s-idles-rough-in-drive-at-stop/43464>\
**Category:** Maintenance/Repairs\
**Tags:** saab, 900\
**Created:** [January 30, 2010, 4:24pm UTC](https://community.cartalk.com/t/1997-saab-900s-idles-rough-in-drive-at-stop/43464 "2010-01-30T16:24:43Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Saab90ME](https://avatars.discourse-cdn.com/v4/letter/s/a88e4f/32.png) [@Saab90ME](https://community.cartalk.com/u/Saab90ME)\
**Post date:** [January 30, 2010, 4:24pm UTC](https://community.cartalk.com/t/1997-saab-900s-idles-rough-in-drive-at-stop/43464/1 "2010-01-30T16:24:43Z")

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I have a 1997 Saab 900s that i love…but it idles very rough to the point the dash vibrates while in drive at a stop. If in park or N, the vibration smooths out… any ideas before i take to dealership? Thanks!

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**Author:** ![Joseph\_E\_Meehan](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/joseph_e_meehan/32/21_2.png) [@Joseph\_E\_Meehan](https://community.cartalk.com/u/Joseph_E_Meehan)\
**Post date:** [January 30, 2010, 5:59pm UTC](https://community.cartalk.com/t/1997-saab-900s-idles-rough-in-drive-at-stop/43464/2 "2010-01-30T17:59:03Z")

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I don’t know your car well, but I would start be asking if you have any CELs (Check Engine Light), how long has it been a problem, when was the last time the air cleaner, spark plugs and wires and fuel filter were replaced (Yea the fuel filter was a trick question. It is not really related, but if you are behind on the other maintenance, you might as well get that done at the same time.

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**Author:** ![Caddyman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/caddyman/32/23_2.png) [@Caddyman](https://community.cartalk.com/u/Caddyman)\
**Post date:** [January 30, 2010, 6:21pm UTC](https://community.cartalk.com/t/1997-saab-900s-idles-rough-in-drive-at-stop/43464/3 "2010-01-30T18:21:49Z")

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A vacuum leak or an EGR valve stuck open are likely suspects…Forget the Saab dealer unless you feel paying double is worthwhile…
