# '91 Isuzu Trooper V6

**URL:** <https://community.cartalk.com/t/91-isuzu-trooper-v6/18739>\
**Category:** Maintenance/Repairs\
**Created:** [August 27, 2008, 4:20pm UTC](https://community.cartalk.com/t/91-isuzu-trooper-v6/18739 "2008-08-27T16:20:59Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![will4life](https://avatars.discourse-cdn.com/v4/letter/w/34f0e0/32.png) [@will4life](https://community.cartalk.com/u/will4life)\
**Post date:** [August 27, 2008, 4:20pm UTC](https://community.cartalk.com/t/91-isuzu-trooper-v6/18739/1 "2008-08-27T16:20:59Z")

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I replaced my radiator and water pump but  
  
 was unable to install a fan shroud; will the lack of a shroud cause problems?  
  
 Also, is the thermostat located where the upper radiator hose enters the top of the engine, and must I install one?

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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 27, 2008, 5:17pm UTC](https://community.cartalk.com/t/91-isuzu-trooper-v6/18739/2 "2008-08-27T17:17:59Z")

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You will lose a significant amount of air flow when stationary without the shroud, so it could be a problem in stop and go driving. I don’t know where the thermostat is on this engine (it is often at where the top hose enters the block) but you MUST have one for the engine to function properly.

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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:** [August 27, 2008, 6:28pm UTC](https://community.cartalk.com/t/91-isuzu-trooper-v6/18739/3 "2008-08-27T18:28:14Z")

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Here is the thermostat page from the Autozone Isuzu online repair guide.

[http://www.autozone.com/az/cds/en\_us/0900823d/80/18/42/91/0900823d80184291/repairInfoPages.htm](http://www.autozone.com/az/cds/en_us/0900823d/80/18/42/91/0900823d80184291/repairInfoPages.htm)

The upper radiator hose is attached to the thermostat housing for the GM 3.1 V6.

Ed B.

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**Author:** ![will4life](https://avatars.discourse-cdn.com/v4/letter/w/34f0e0/32.png) [@will4life](https://community.cartalk.com/u/will4life)\
**Post date:** [August 27, 2008, 8:03pm UTC](https://community.cartalk.com/t/91-isuzu-trooper-v6/18739/4 "2008-08-27T20:03:19Z")

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Thankyou for the timely response