# Vapor lock

**URL:** <https://community.cartalk.com/t/vapor-lock/3148>\
**Category:** Maintenance/Repairs\
**Created:** [August 15, 2007, 2:58pm UTC](https://community.cartalk.com/t/vapor-lock/3148 "2007-08-15T14:58:13Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![ryan32](https://avatars.discourse-cdn.com/v4/letter/r/aca169/32.png) [@ryan32](https://community.cartalk.com/u/ryan32)\
**Post date:** [August 15, 2007, 2:58pm UTC](https://community.cartalk.com/t/vapor-lock/3148/1 "2007-08-15T14:58:13Z")

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'97 dodge caravan stalls during peak temperature hours during the day (temp has been about 100 degrees). I have concluded this is vapor lock. What can I do to prevent it?

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**Author:** ![mcparadise](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mcparadise/32/32_2.png) [@mcparadise](https://community.cartalk.com/u/mcparadise)\
**Post date:** [August 15, 2007, 3:16pm UTC](https://community.cartalk.com/t/vapor-lock/3148/2 "2007-08-15T15:16:31Z")

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Insulate or relocate the fuel line so it is further away from hot engine components.

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**Author:** ![TwinTurbo](https://avatars.discourse-cdn.com/v4/letter/t/8baadc/32.png) [@TwinTurbo](https://community.cartalk.com/u/TwinTurbo)\
**Post date:** [August 15, 2007, 3:39pm UTC](https://community.cartalk.com/t/vapor-lock/3148/3 "2007-08-15T15:39:09Z")

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Vapor lock is very rare these days. The reason being, there is always way more fuel flowing through the system that can be used by the engine. This constant cycling back to the tank insures that there is a fresh, cool supply of fuel at the fuel rail for the engine.

More likely that you have a failing ignition module that is now heat sensitive.

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**Author:** ![Bugser](https://avatars.discourse-cdn.com/v4/letter/b/ba9def/32.png) [@Bugser](https://community.cartalk.com/u/Bugser)\
**Post date:** [August 18, 2007, 11:30pm UTC](https://community.cartalk.com/t/vapor-lock/3148/4 "2007-08-18T23:30:04Z")

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I have a '96 Cherokee that I thought had vapour lock too. After months of aggravation I had the crankshaft sensor replaced and the problem seems to be fixed!!

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**Author:** ![Cougar](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/cougar/32/21348_2.png) [@Cougar](https://community.cartalk.com/u/Cougar)\
**Post date:** [August 19, 2007, 12:45am UTC](https://community.cartalk.com/t/vapor-lock/3148/5 "2007-08-19T00:45:20Z")

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I agree with the others. Perhaps what really is going on is the fuel pump relay causing the trouble.