# 1986 Mazda B2000 Engine Stalling at Highway Speed

**URL:** <https://community.cartalk.com/t/1986-mazda-b2000-engine-stalling-at-highway-speed/164684>\
**Category:** Maintenance/Repairs\
**Tags:** mazda\
**Created:** [May 22, 2020, 12:18pm UTC](https://community.cartalk.com/t/1986-mazda-b2000-engine-stalling-at-highway-speed/164684 "2020-05-22T12:18:08Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![dannoflynn\_163057](https://avatars.discourse-cdn.com/v4/letter/d/e274bd/32.png) [@dannoflynn\_163057](https://community.cartalk.com/u/dannoflynn_163057)\
**Post date:** [May 22, 2020, 12:18pm UTC](https://community.cartalk.com/t/1986-mazda-b2000-engine-stalling-at-highway-speed/164684/1 "2020-05-22T12:18:09Z")

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My truck is stalling or cutting out when I’m at full speed. It seems to do so more frequently when it’s warm out. It will cut out while I’m driving, but if I pop the hood and let it sit for 10-15 minutes it will start up no problem. It usually has a sulphur kind of smell when I restart it. 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:** [May 22, 2020, 1:00pm UTC](https://community.cartalk.com/t/1986-mazda-b2000-engine-stalling-at-highway-speed/164684/2 "2020-05-22T13:00:04Z")

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Maybe vapor lock…

Maybe a clogged fuel filter…

Maybe a clogged and failing catalytic convertor

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**Author:** ![Honda-Blackbird](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/honda-blackbird/32/3159_2.png) [@Honda-Blackbird](https://community.cartalk.com/u/Honda-Blackbird)\
**Post date:** [May 22, 2020, 1:59pm UTC](https://community.cartalk.com/t/1986-mazda-b2000-engine-stalling-at-highway-speed/164684/3 "2020-05-22T13:59:59Z")

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Do the same test at night… then look to see if any part of your exhaust is glowing red…esp the cat.

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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:** [May 22, 2020, 3:31pm UTC](https://community.cartalk.com/t/1986-mazda-b2000-engine-stalling-at-highway-speed/164684/4 "2020-05-22T15:31:45Z")

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A faulty ignition control module that’s effected by heat can cause the engine to shut off randomly.

 ![image](https://global.discourse-cdn.com/cartalk/original/3X/4/7/4752e4ed617570278708c2af381a16a8570533e6.jpeg)

Tester

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**Author:** ![ok4450](https://avatars.discourse-cdn.com/v4/letter/o/e9bcb4/32.png) [@ok4450](https://community.cartalk.com/u/ok4450)\
**Post date:** [May 22, 2020, 9:58pm UTC](https://community.cartalk.com/t/1986-mazda-b2000-engine-stalling-at-highway-speed/164684/5 "2020-05-22T21:58:43Z")

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Check for a spark; or lack of. If there is a spark then consider that it may be vapor locking. These things were still using carburetors and vapor lock seems to be more of a problem with Ethanol gasoline. Warm weather is also a factor in vapor lock.

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**Author:** ![pleasedodgevan2](https://avatars.discourse-cdn.com/v4/letter/p/ad7895/32.png) [@pleasedodgevan2](https://community.cartalk.com/u/pleasedodgevan2)\
**Post date:** [May 23, 2020, 4:57am UTC](https://community.cartalk.com/t/1986-mazda-b2000-engine-stalling-at-highway-speed/164684/6 "2020-05-23T04:57:12Z")

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It may not be frayed wires in the distributor but you can check that just by removing the cap. I would try replacing that module that was pictured and the pickup but it is usually the module going out before the pickup. The other suggestions aren’t bad either.