# Speedometer problem

**URL:** <https://forums.speedlife.net/t/speedometer-problem/106628>\
**Category:** SON240sx Automotive\
**Created:** [May 17, 2007, 12:55am UTC](https://forums.speedlife.net/t/speedometer-problem/106628 "2007-05-17T00:55:37Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![shift\_fun](https://avatars.discourse-cdn.com/v4/letter/s/d07c76/32.png) [@shift\_fun](https://forums.speedlife.net/u/shift_fun)\
**Post date:** [May 17, 2007, 12:55am UTC](https://forums.speedlife.net/t/speedometer-problem/106628/1 "2007-05-17T00:55:37Z")

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my speedo on my dohc doesnt work … it stays dead at 0 … sometime when im on the highway at 3000 - 3500 rpm the speedo jumps to 140kmph and stays there and when i decelerate it goes past 180.

do i need another Dohc cluster or is there a simple fix to this problem

Check lights , rpm , fuel , temp…etc everything else works

thanks

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**Author:** ![GetARide](https://avatars.discourse-cdn.com/v4/letter/g/e495f1/32.png) [@GetARide](https://forums.speedlife.net/u/GetARide)\
**Post date:** [May 17, 2007, 6:03am UTC](https://forums.speedlife.net/t/speedometer-problem/106628/2 "2007-05-17T06:03:49Z")

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It could be the speed sensor. If so, replace the speed sensor with a new one. It’s connected to the tranny.

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**Author:** ![snowboard\_240sx](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/snowboard_240sx/32/5519_2.png) [@snowboard\_240sx](https://forums.speedlife.net/u/snowboard_240sx)\
**Post date:** [May 18, 2007, 2:12am UTC](https://forums.speedlife.net/t/speedometer-problem/106628/3 "2007-05-18T02:12:35Z")

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been talked about many times before. Its just ur cluster. U just need to replace the speedometre part and u will be fine. So Dohc or SOHC will work.