# Sensor location

**URL:** <https://community.cartalk.com/t/sensor-location/26588>\
**Category:** Maintenance/Repairs\
**Created:** [February 17, 2009, 5:12pm UTC](https://community.cartalk.com/t/sensor-location/26588 "2009-02-17T17:12:17Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![pbr1952](https://avatars.discourse-cdn.com/v4/letter/p/2acd7d/32.png) [@pbr1952](https://community.cartalk.com/u/pbr1952)\
**Post date:** [February 17, 2009, 5:12pm UTC](https://community.cartalk.com/t/sensor-location/26588/1 "2009-02-17T17:12:17Z")

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I have a 1990 Isuzu Trooper with the 4ZE1 2.6L four (4) cylinder engin. Based on a recent Car Talk episode, it exhibits “classic symptoms” of a bad coolant temperature sensor - idles great when cold; way too fast when warmed up - temp guage moves up and settles down indicating my thermostat does work - also will rev itself up and down quickly when warmed up. SO, I bought a coolant temperature sensor at the parts store, and now I can’t see anything that looks like it from peering into the engine compartment from the top. Can someone please tell me where this thing is so that I can replace it? Many thanks. Paul in Idaho

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**Author:** ![willey](https://avatars.discourse-cdn.com/v4/letter/w/a9adbd/32.png) [@willey](https://community.cartalk.com/u/willey)\
**Post date:** [February 17, 2009, 5:49pm UTC](https://community.cartalk.com/t/sensor-location/26588/2 "2009-02-17T17:49:14Z")

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This is the location per ALLDATA…

Coolant Temperature Sensor: Lower Right Side Of Engine, Below Intake Manifold

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**Author:** ![edb1961](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/edb1961/32/122_2.png) [@edb1961](https://community.cartalk.com/u/edb1961)\
**Post date:** [February 17, 2009, 5:55pm UTC](https://community.cartalk.com/t/sensor-location/26588/3 "2009-02-17T17:55:44Z")

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Check Figure 6, it showes the locations of the various sensors.

[http://www.autozone.com/shopping/repairGuide.htm?pageId=0900c1528006257f](http://www.autozone.com/shopping/repairGuide.htm?pageId=0900c1528006257f)

Ed B.

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**Author:** ![pbr1952](https://avatars.discourse-cdn.com/v4/letter/p/2acd7d/32.png) [@pbr1952](https://community.cartalk.com/u/pbr1952)\
**Post date:** [February 17, 2009, 6:33pm UTC](https://community.cartalk.com/t/sensor-location/26588/4 "2009-02-17T18:33:28Z")

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Thanks for your help! Now I have a reason to lie down in the snow.