# Intermittent P0308 Code 2004 Jeep Grand Cherokee

**URL:** <https://community.cartalk.com/t/intermittent-p0308-code-2004-jeep-grand-cherokee/92098>\
**Category:** Maintenance/Repairs\
**Created:** [December 30, 2015, 5:49am UTC](https://community.cartalk.com/t/intermittent-p0308-code-2004-jeep-grand-cherokee/92098 "2015-12-30T05:49:21Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![ALF932](https://avatars.discourse-cdn.com/v4/letter/a/f04885/32.png) [@ALF932](https://community.cartalk.com/u/ALF932)\
**Post date:** [December 30, 2015, 5:49am UTC](https://community.cartalk.com/t/intermittent-p0308-code-2004-jeep-grand-cherokee/92098/1 "2015-12-30T05:49:21Z")

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I have a 2004 Jeep Grand Cherokee 4.7L nonHO. I get a P0308 code that I have not been able to hunt down. It is odd because I only get the code if I restart the vehicle when it is warm. If I let it cool down all the way, no code, but if I restart after an hour or so, the code pops up. I have changed the plugs and the coil. I have run injector cleaner, but not changed the injector as I am nervous about busting the tiny plastic clips with my big meaty paws. Any ideas would be appreciated.

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**Author:** ![insightful](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/insightful/32/2732_2.png) [@insightful](https://community.cartalk.com/u/insightful)\
**Post date:** [December 30, 2015, 6:44am UTC](https://community.cartalk.com/t/intermittent-p0308-code-2004-jeep-grand-cherokee/92098/2 "2015-12-30T06:44:31Z")

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Kinda sounds like a leaky injector giving a too-rich condition on a hot start. Did that plug look any different than the others?