# breaking up? \['86 Mustang 5.0 motor\]

**URL:** https://forums.speedlife.net/t/breaking-up-86-mustang-5-0-motor/70738
**Category:** NYSpeed Automotive
**Created:** [July 18, 2009, 6:25pm UTC](https://forums.speedlife.net/t/breaking-up-86-mustang-5-0-motor/70738 "2009-07-18T18:25:49Z")
**Posts on this page:** 6
**Page:** 1

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### Author: ![86maro](https://avatars.discourse-cdn.com/v4/letter/8/2acd7d/32.png) [@86maro](https://forums.speedlife.net/u/86maro)
#### Post date: [July 18, 2009, 6:25pm UTC](https://forums.speedlife.net/t/breaking-up-86-mustang-5-0-motor/70738/1 "2009-07-18T18:25:49Z")

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I have a 86 mustang 5.0 speed density,when the cars cold it wont do it.I have a 195 thermostat in it and once it warms up to 195 if will break up in higher rpms, can anyone tell why it might be doing this?I put new wires cap and rotor on it and it still does it.

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### Author: ![Nikuk](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/nikuk/32/7254_2.png) [@Nikuk](https://forums.speedlife.net/u/Nikuk)
#### Post date: [July 20, 2009, 7:41am UTC](https://forums.speedlife.net/t/breaking-up-86-mustang-5-0-motor/70738/2 "2009-07-20T07:41:05Z")

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Right gap? pull & check the TFI module

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### Author: ![86maro](https://avatars.discourse-cdn.com/v4/letter/8/2acd7d/32.png) [@86maro](https://forums.speedlife.net/u/86maro)
#### Post date: [July 20, 2009, 8:11am UTC](https://forums.speedlife.net/t/breaking-up-86-mustang-5-0-motor/70738/3 "2009-07-20T08:11:35Z")

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Yes i gapped everything myself, but i will try the tfi module thanks.

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### Author: ![Nikuk](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/nikuk/32/7254_2.png) [@Nikuk](https://forums.speedlife.net/u/Nikuk)
#### Post date: [July 20, 2009, 8:47am UTC](https://forums.speedlife.net/t/breaking-up-86-mustang-5-0-motor/70738/4 "2009-07-20T08:47:31Z")

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As they got old they have a tendency to act up when they get hot. There are how-to’s all over google

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### Author: ![BDR5oh](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/bdr5oh/32/7315_2.png) [@BDR5oh](https://forums.speedlife.net/u/BDR5oh)
#### Post date: [July 20, 2009, 9:03am UTC](https://forums.speedlife.net/t/breaking-up-86-mustang-5-0-motor/70738/5 "2009-07-20T09:03:14Z")

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take some timing out … or your probably just running out of fuel

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### Author: ![86maro](https://avatars.discourse-cdn.com/v4/letter/8/2acd7d/32.png) [@86maro](https://forums.speedlife.net/u/86maro)
#### Post date: [July 21, 2009, 9:43am UTC](https://forums.speedlife.net/t/breaking-up-86-mustang-5-0-motor/70738/6 "2009-07-21T09:43:11Z")

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ok i’ll try we’ll see what happens thanks.