# 2018 Jeep Cherokee - Rough idle in cold

**URL:** <https://community.cartalk.com/t/2018-jeep-cherokee-rough-idle-in-cold/189072>\
**Category:** Maintenance/Repairs\
**Tags:** jeep\
**Created:** [February 11, 2023, 1:37am UTC](https://community.cartalk.com/t/2018-jeep-cherokee-rough-idle-in-cold/189072 "2023-02-11T01:37:58Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![craig57](https://avatars.discourse-cdn.com/v4/letter/c/74df32/32.png) [@craig57](https://community.cartalk.com/u/craig57)\
**Post date:** [February 11, 2023, 1:37am UTC](https://community.cartalk.com/t/2018-jeep-cherokee-rough-idle-in-cold/189072/1 "2023-02-11T01:37:59Z")

</div>

very rough idle after starting in beolw freezing temperature

---

<div class="post-metadata">

**Author:** ![George\_San\_Jose1](https://avatars.discourse-cdn.com/v4/letter/g/e5b9ba/32.png) [@George\_San\_Jose1](https://community.cartalk.com/u/George_San_Jose1)\
**Post date:** [February 11, 2023, 11:43pm UTC](https://community.cartalk.com/t/2018-jeep-cherokee-rough-idle-in-cold/189072/2 "2023-02-11T23:43:34Z")

</div>

Ask shop to check for current and pending drivetrain module diagnostic codes. Is check engine light on?

There are Many possibilities for that symptom, but rough idle when cold could be the fuel/air mixture is too lean, so ask shop to check vacuum leak, maybe do a fuel-trim test. Other possibilities to consider

- Idle air control
- Spark plugs
- Coils
- Fuel injection system
- Engine air filter
- EGR
- PCV