# 1963 Thunderbird intermittent idle issue

**URL:** <https://community.cartalk.com/t/1963-thunderbird-intermittent-idle-issue/76069>\
**Category:** Maintenance/Repairs\
**Created:** [December 11, 2012, 8:57am UTC](https://community.cartalk.com/t/1963-thunderbird-intermittent-idle-issue/76069 "2012-12-11T08:57:42Z")\
**Posts on this page:** 1\
**Page:** 2

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**Author:** ![keith](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/keith/32/5518_2.png) [@keith](https://community.cartalk.com/u/keith)\
**Post date:** [December 14, 2012, 9:38am UTC](https://community.cartalk.com/t/1963-thunderbird-intermittent-idle-issue/76069/21 "2012-12-14T09:38:18Z")

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Its been a long time but I think that the proper setting of the mixture screws was to start at 1.5, then go in and out a little at a time for highest idle speed. The add 1/8 turn out. Then use the idle speed screw to set the idle speed to specs.

If its a two wire dwell meter, black goes to ground and red goes to the neg (-) post on the coil.

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