# Pressure Pulse Sensor

**URL:** <https://community.cartalk.com/t/pressure-pulse-sensor/179022>\
**Category:** Maintenance/Repairs\
**Tags:** diagnostics\
**Created:** [August 28, 2021, 2:10pm UTC](https://community.cartalk.com/t/pressure-pulse-sensor/179022 "2021-08-28T14:10:34Z")\
**Posts on this page:** 7\
**Page:** 1

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**Author:** ![oldnotdeadyet](https://avatars.discourse-cdn.com/v4/letter/o/a6a055/32.png) [@oldnotdeadyet](https://community.cartalk.com/u/oldnotdeadyet)\
**Post date:** [August 28, 2021, 2:10pm UTC](https://community.cartalk.com/t/pressure-pulse-sensor/179022/1 "2021-08-28T14:10:34Z")

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I see that eBay is selling a device called the Pressure Pulse Sensor. Does anybody here have experience with this device?

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**Author:** ![texases](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/texases/32/862_2.png) [@texases](https://community.cartalk.com/u/texases)\
**Post date:** [August 28, 2021, 2:14pm UTC](https://community.cartalk.com/t/pressure-pulse-sensor/179022/2 "2021-08-28T14:14:54Z")

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No, what’s it do?

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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:** [August 28, 2021, 2:16pm UTC](https://community.cartalk.com/t/pressure-pulse-sensor/179022/3 "2021-08-28T14:16:54Z")

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Could you provide a link?

There were some engines that had a fuel pressure pulse damper on their fuel rails… not a sensor but maybe misnamed?

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<div class="post-metadata">

**Author:** ![oldnotdeadyet](https://avatars.discourse-cdn.com/v4/letter/o/a6a055/32.png) [@oldnotdeadyet](https://community.cartalk.com/u/oldnotdeadyet)\
**Post date:** [August 28, 2021, 2:19pm UTC](https://community.cartalk.com/t/pressure-pulse-sensor/179022/4 "2021-08-28T14:19:01Z")

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The description seems to say that it is mounted in the exhaust manifold, and sends a pressure signal (to what?) that you can get a baseline for, and later, if the signal changes, it gives info about which cylinder has changed characteristics. It can be synced to the #1 cylinder for this.

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<div class="post-metadata">

**Author:** ![oldnotdeadyet](https://avatars.discourse-cdn.com/v4/letter/o/a6a055/32.png) [@oldnotdeadyet](https://community.cartalk.com/u/oldnotdeadyet)\
**Post date:** [August 28, 2021, 2:21pm UTC](https://community.cartalk.com/t/pressure-pulse-sensor/179022/5 "2021-08-28T14:21:05Z")

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> **[pressure pulse sensor in Automotive Tools & Supplies | eBay](https://www.ebay.com/sch/i.html?_from=R40&_trksid=p2380057.m570.l2632&_nkw=pressure%2Bpulse%2Bsensor&_sacat=34998)**

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<div class="post-metadata">

**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:** [August 28, 2021, 2:30pm UTC](https://community.cartalk.com/t/pressure-pulse-sensor/179022/6 "2021-08-28T14:30:14Z")

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That seems more like a dyno-room test tool to me. I doubt many mechanics have an oscilloscope in their toolbox nor would they have an engine’s “pressure signature” to compare when the car comes in for service.

To me, it appears as though the sensor is an industrial grade pressure transducer that the seller is trying to build a bigger market for.

Notice it says “no returns”!

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<div class="post-metadata">

**Author:** ![oldnotdeadyet](https://avatars.discourse-cdn.com/v4/letter/o/a6a055/32.png) [@oldnotdeadyet](https://community.cartalk.com/u/oldnotdeadyet)\
**Post date:** [August 28, 2021, 2:47pm UTC](https://community.cartalk.com/t/pressure-pulse-sensor/179022/7 "2021-08-28T14:47:46Z")

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The geeks among us will note that oscilloscopes are much cheaper, and a PC can be made into a scope.  
It sounds like a large garage working on identical vehicles (such as USPS) might find this setup useful.