# Explorer very poor idle when cold **URL:** \ **Category:** Maintenance/Repairs\ **Created:** [January 2, 2008, 5:41pm UTC](https://community.cartalk.com/t/explorer-very-poor-idle-when-cold/8928 "2008-01-02T17:41:27Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![barneyhyphen](https://avatars.discourse-cdn.com/v4/letter/b/0ea827/32.png) [@barneyhyphen](https://community.cartalk.com/u/barneyhyphen)\ **Post date:** [January 2, 2008, 5:41pm UTC](https://community.cartalk.com/t/explorer-very-poor-idle-when-cold/8928/1 "2008-01-02T17:41:27Z")
2000 Ford explorer XLT. Runs great when warm/hot but very rough and hard to keep idling for first 3-5 minutes when cold. Changed coolant sensor, the one that reports to the ECU, not the one that drives the dash gauge. No better. Any ideas please. Thanks. ---
**Author:** ![Joseph\_E\_Meehan](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/joseph_e_meehan/32/21_2.png) [@Joseph\_E\_Meehan](https://community.cartalk.com/u/Joseph_E_Meehan)\ **Post date:** [January 2, 2008, 6:11pm UTC](https://community.cartalk.com/t/explorer-very-poor-idle-when-cold/8928/2 "2008-01-02T18:11:31Z")
``` Have you checked to see if there are any error codes stored in the computer? ``` ---
**Author:** ![barneyhyphen](https://avatars.discourse-cdn.com/v4/letter/b/0ea827/32.png) [@barneyhyphen](https://community.cartalk.com/u/barneyhyphen)\ **Post date:** [January 2, 2008, 8:13pm UTC](https://community.cartalk.com/t/explorer-very-poor-idle-when-cold/8928/3 "2008-01-02T20:13:30Z")
I had an AutoZone do a code pull for me but the result was extremly “generic”. With a number of “educated guesses” they suggested it could be the MAF sensor. I hesitate because this is a very expensive part, based on a perhaps/maybe. Any thoughts?