# 2000 Jeep Cherokee - Codes on new engine

**URL:** <https://community.cartalk.com/t/2000-jeep-cherokee-codes-on-new-engine/175751>\
**Category:** General Discussion\
**Tags:** jeep\
**Created:** [March 21, 2021, 12:53am UTC](https://community.cartalk.com/t/2000-jeep-cherokee-codes-on-new-engine/175751 "2021-03-21T00:53:11Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![jim09](https://avatars.discourse-cdn.com/v4/letter/j/b77776/32.png) [@jim09](https://community.cartalk.com/u/jim09)\
**Post date:** [March 21, 2021, 12:53am UTC](https://community.cartalk.com/t/2000-jeep-cherokee-codes-on-new-engine/175751/1 "2021-03-21T00:53:11Z")

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Failure to fire code on #3 in a new long block with 2500 miles. Replaced coil pack and fuel injectors. could the computer need restarted and if so how to do.

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**Author:** ![circuitsmith](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/circuitsmith/32/40376_2.png) [@circuitsmith](https://community.cartalk.com/u/circuitsmith)\
**Post date:** [March 21, 2021, 1:20pm UTC](https://community.cartalk.com/t/2000-jeep-cherokee-codes-on-new-engine/175751/2 "2021-03-21T13:20:08Z")

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Check with meter or test light that injector and coil are actually getting power.  
Do a compression test.