# 1995 Volvo 850 -Loses spark

**URL:** <https://community.cartalk.com/t/1995-volvo-850-loses-spark/129026>\
**Category:** Maintenance/Repairs\
**Tags:** volvo\
**Created:** [November 17, 2018, 5:49pm UTC](https://community.cartalk.com/t/1995-volvo-850-loses-spark/129026 "2018-11-17T17:49:51Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Doug49](https://avatars.discourse-cdn.com/v4/letter/d/e36b37/32.png) [@Doug49](https://community.cartalk.com/u/Doug49)\
**Post date:** [November 17, 2018, 5:49pm UTC](https://community.cartalk.com/t/1995-volvo-850-loses-spark/129026/1 "2018-11-17T17:49:51Z")

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ignition spark goes away

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**Author:** ![COROLLAGUY1](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/corollaguy1/32/7575_2.png) [@COROLLAGUY1](https://community.cartalk.com/u/COROLLAGUY1)\
**Post date:** [November 19, 2018, 12:09am UTC](https://community.cartalk.com/t/1995-volvo-850-loses-spark/129026/2 "2018-11-19T00:09:06Z")

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Can you be more specific??? Did you check your spark plug wires.They could be frayed and start to arc. You could feel bucking and loss of power because of this.

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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:** [November 19, 2018, 1:55am UTC](https://community.cartalk.com/t/1995-volvo-850-loses-spark/129026/3 "2018-11-19T01:55:27Z")

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A sudden loss of spark can be caused by a faulty crankshaft position sensor.

[https://www.rockauto.com/en/catalog/volvo,1995,850,2.4l+l5,1433979,ignition,crankshaft+position+sensor,7196](https://www.rockauto.com/en/catalog/volvo,1995,850,2.4l+l5,1433979,ignition,crankshaft+position+sensor,7196)

If the computer loses the signal from this sensor, the computer won’t operate the ignition system.

Tester

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**Author:** ![Doug49](https://avatars.discourse-cdn.com/v4/letter/d/e36b37/32.png) [@Doug49](https://community.cartalk.com/u/Doug49)\
**Post date:** [November 19, 2018, 2:38am UTC](https://community.cartalk.com/t/1995-volvo-850-loses-spark/129026/4 "2018-11-19T02:38:35Z")

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Starts and drives fine to first destination but will not re-start until an hour or more passes. Relay to fuel pump replaced (there was a spare in glove box) but it has fuel pressure at the rail. 40PSI

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<div class="post-metadata">

**Author:** ![COROLLAGUY1](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/corollaguy1/32/7575_2.png) [@COROLLAGUY1](https://community.cartalk.com/u/COROLLAGUY1)\
**Post date:** [November 19, 2018, 6:21am UTC](https://community.cartalk.com/t/1995-volvo-850-loses-spark/129026/5 "2018-11-19T06:21:03Z")

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Check the ignition module.