# 1993 Chevy 454

**URL:** <https://community.cartalk.com/t/1993-chevy-454/31156>\
**Category:** Maintenance/Repairs\
**Created:** [May 30, 2009, 12:03am UTC](https://community.cartalk.com/t/1993-chevy-454/31156 "2009-05-30T00:03:47Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![el\_guapo](https://avatars.discourse-cdn.com/v4/letter/e/82dd89/32.png) [@el\_guapo](https://community.cartalk.com/u/el_guapo)\
**Post date:** [May 30, 2009, 12:03am UTC](https://community.cartalk.com/t/1993-chevy-454/31156/1 "2009-05-30T00:03:47Z")

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I have a '93 Chevy one ton truck. Without warning the engine will miss…the service light will come on and the engine will run out of time. Turning the engine off will sometimes reset the timing. It usually does this after about 10-15 minutes of driving. I’ve replaced all common electrical components. Anyone have any advise? Thanks, S. Davis

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**Author:** ![edb1961](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/edb1961/32/122_2.png) [@edb1961](https://community.cartalk.com/u/edb1961)\
**Post date:** [May 30, 2009, 12:33am UTC](https://community.cartalk.com/t/1993-chevy-454/31156/2 "2009-05-30T00:33:31Z")

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If the engine is a 454 TBI, try the Yahoo GM\_TBI group. They have been helpful with my 93 Caprice with a 305 TBI in the past.

[http://autos.groups.yahoo.com/group/GM\_TBI/?yguid=288452351](http://autos.groups.yahoo.com/group/GM_TBI/?yguid=288452351)

Good luck,

Ed B.

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**Author:** ![waterboy](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/waterboy/32/764_2.png) [@waterboy](https://community.cartalk.com/u/waterboy)\
**Post date:** [May 30, 2009, 1:11am UTC](https://community.cartalk.com/t/1993-chevy-454/31156/3 "2009-05-30T01:11:18Z")

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It could be an injector problem, Are you able to confirm it is running out of time or just misfiring?

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**Author:** ![oldschool](https://avatars.discourse-cdn.com/v4/letter/o/e19adc/32.png) [@oldschool](https://community.cartalk.com/u/oldschool)\
**Post date:** [May 30, 2009, 2:29am UTC](https://community.cartalk.com/t/1993-chevy-454/31156/4 "2009-05-30T02:29:06Z")

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or backfiring through intake or tailpipe. Anyone put a vacuum gague on it yet? have you scoped the engine in any way yet? Complete distributor or just parts inside distributor?

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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:** [May 30, 2009, 5:25am UTC](https://community.cartalk.com/t/1993-chevy-454/31156/5 "2009-05-30T05:25:41Z")

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Junk it now and avoid the rush…

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**Author:** ![waterboy](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/waterboy/32/764_2.png) [@waterboy](https://community.cartalk.com/u/waterboy)\
**Post date:** [May 30, 2009, 5:32am UTC](https://community.cartalk.com/t/1993-chevy-454/31156/6 "2009-05-30T05:32:08Z")

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What rush? comon caddyman you cannot have turned so cynical so soon, could you?