# Hot Weather Ignition Problem

**URL:** <https://community.cartalk.com/t/hot-weather-ignition-problem/56811>\
**Category:** Maintenance/Repairs\
**Tags:** f250, ford\
**Created:** [October 25, 2010, 1:41pm UTC](https://community.cartalk.com/t/hot-weather-ignition-problem/56811 "2010-10-25T13:41:41Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![parrothead936](https://avatars.discourse-cdn.com/v4/letter/p/ee59a6/32.png) [@parrothead936](https://community.cartalk.com/u/parrothead936)\
**Post date:** [October 25, 2010, 1:41pm UTC](https://community.cartalk.com/t/hot-weather-ignition-problem/56811/1 "2010-10-25T13:41:41Z")

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I have a 1988, Ford F-250, 7.3 Diesel, 4X4.  
  
 For the past few years, on a hot day, if I have started and stopped a few times and turned off the engine it does not want to restart. The ignition switch has been replaced twice. It works great for a couple of weeks and then reverts. Yesterday,for the 1st time it would not engage at all. However, if I turned off the switch all the way back to AUX I turned on and off the radio it kicked right over. Seems there must be something not making elec. contact, but oly during a hot day. Where do I look for a fix?  
  
  
  
 Thanks

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**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:** [October 25, 2010, 1:45pm UTC](https://community.cartalk.com/t/hot-weather-ignition-problem/56811/2 "2010-10-25T13:45:40Z")

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I would start with the battery. Have it checked on a hot day at an autopart’s store. They often will check the battery for free. Do it on a hot day with the engine fully warmed up.

Also check the battery cables. All ends of all cables. Not just the ends that attach to the battery.

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**Author:** ![Tester](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tester/32/15976_2.png) [@Tester](https://community.cartalk.com/u/Tester)\
**Post date:** [October 25, 2010, 2:59pm UTC](https://community.cartalk.com/t/hot-weather-ignition-problem/56811/3 "2010-10-25T14:59:26Z")

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There’s a starter relay located under the hood at the right front fender. It could be this relay is getting hot and failing to supply voltage to the starter solenoid.

Tester