# 2008 Ford F-150 - Dead battery

**URL:** <https://community.cartalk.com/t/2008-ford-f-150-dead-battery/152014>\
**Category:** Maintenance/Repairs\
**Tags:** ford\
**Created:** [November 2, 2019, 11:52pm UTC](https://community.cartalk.com/t/2008-ford-f-150-dead-battery/152014 "2019-11-02T23:52:48Z")\
**Posts on this page:** 7\
**Page:** 1

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**Author:** ![Bob46](https://avatars.discourse-cdn.com/v4/letter/b/ee7513/32.png) [@Bob46](https://community.cartalk.com/u/Bob46)\
**Post date:** [November 2, 2019, 11:52pm UTC](https://community.cartalk.com/t/2008-ford-f-150-dead-battery/152014/1 "2019-11-02T23:52:48Z")

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I was using a portable air compressor (to fill golf cart tires) plugged into the cigarette lighter with the truck ignition on accessory (engine not running). Now I can’t start the truck. Fuel pump (under truck bed) is clicking. I put my charger on the battery but would not start. Lights were ok but loud clicking at engine (maybe the alternator or starter?) but the fuel pump did stop for a few minutes then started again. Can’t start the truck so I disconnected the battery positive lead (to stop the fuel pump) until I can get to a mechanic Monday. Any ideas?

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**Author:** ![Mustangman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mustangman/32/44130_2.png) [@Mustangman](https://community.cartalk.com/u/Mustangman)\
**Post date:** [November 2, 2019, 11:59pm UTC](https://community.cartalk.com/t/2008-ford-f-150-dead-battery/152014/2 "2019-11-02T23:59:31Z")

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Yes, your battery needs replacement now. Don’t feel bad, the compressor did you a favor to kill your battery before the really cold weather arrives.

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**Author:** ![old\_mopar\_guy](https://avatars.discourse-cdn.com/v4/letter/o/6bbea6/32.png) [@old\_mopar\_guy](https://community.cartalk.com/u/old_mopar_guy)\
**Post date:** [November 3, 2019, 1:39am UTC](https://community.cartalk.com/t/2008-ford-f-150-dead-battery/152014/3 "2019-11-03T01:39:51Z")

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Let the charger recharge it for 4-6 hours.

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**Author:** ![Purebred](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/purebred/32/46796_2.png) [@Purebred](https://community.cartalk.com/u/Purebred)\
**Post date:** [November 3, 2019, 10:35am UTC](https://community.cartalk.com/t/2008-ford-f-150-dead-battery/152014/4 "2019-11-03T10:35:47Z")

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And always disconnect the NEGATIVE battery side first.

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**Author:** ![Bob46](https://avatars.discourse-cdn.com/v4/letter/b/ee7513/32.png) [@Bob46](https://community.cartalk.com/u/Bob46)\
**Post date:** [November 3, 2019, 7:06pm UTC](https://community.cartalk.com/t/2008-ford-f-150-dead-battery/152014/5 "2019-11-03T19:06:54Z")

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That was it - dead battery. Thanks for the advice.

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**Author:** ![Bob46](https://avatars.discourse-cdn.com/v4/letter/b/ee7513/32.png) [@Bob46](https://community.cartalk.com/u/Bob46)\
**Post date:** [November 3, 2019, 7:09pm UTC](https://community.cartalk.com/t/2008-ford-f-150-dead-battery/152014/6 "2019-11-03T19:09:19Z")

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Battery needed replacement. Thanks for the advice.

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**Author:** ![Bob46](https://avatars.discourse-cdn.com/v4/letter/b/ee7513/32.png) [@Bob46](https://community.cartalk.com/u/Bob46)\
**Post date:** [November 8, 2019, 3:02pm UTC](https://community.cartalk.com/t/2008-ford-f-150-dead-battery/152014/7 "2019-11-08T15:02:23Z")

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Thank for the advice. It was the battery.