# 1997 Nissan Pathfinder

**URL:** <https://community.cartalk.com/t/1997-nissan-pathfinder/29594>\
**Category:** Maintenance/Repairs\
**Created:** [April 25, 2009, 12:11am UTC](https://community.cartalk.com/t/1997-nissan-pathfinder/29594 "2009-04-25T00:11:15Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![tom888](https://avatars.discourse-cdn.com/v4/letter/t/f4b2a3/32.png) [@tom888](https://community.cartalk.com/u/tom888)\
**Post date:** [April 25, 2009, 12:11am UTC](https://community.cartalk.com/t/1997-nissan-pathfinder/29594/1 "2009-04-25T00:11:15Z")

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Hi, Everytime i turn my air conditioner to on it works fine for a while, but sometime when i stop the car the rpm needle jump up and down, it would only resume to normal idle when i cutoff the air cond. I have replaced the thermostat, waterpumps, new freon. Any suggestion guys ?

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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:** [April 25, 2009, 5:50pm UTC](https://community.cartalk.com/t/1997-nissan-pathfinder/29594/2 "2009-04-25T17:50:13Z")

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The next time the idle jumps up and down, open the hood and tap on the idle air control valve with the handle of a screwdriver. If doing this settles the idle down, the idle air control valve is hunting and requires replacement.

Tester

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**Author:** ![the\_same\_mountainbike](https://avatars.discourse-cdn.com/v4/letter/t/c89c15/32.png) [@the\_same\_mountainbike](https://community.cartalk.com/u/the_same_mountainbike)\
**Post date:** [April 25, 2009, 6:00pm UTC](https://community.cartalk.com/t/1997-nissan-pathfinder/29594/3 "2009-04-25T18:00:03Z")

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Try Tester’s suggestion.

But I’m also wonderng if the AC compressor pump is starting to bind up.

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**Author:** ![tom888](https://avatars.discourse-cdn.com/v4/letter/t/f4b2a3/32.png) [@tom888](https://community.cartalk.com/u/tom888)\
**Post date:** [April 28, 2009, 2:25am UTC](https://community.cartalk.com/t/1997-nissan-pathfinder/29594/4 "2009-04-28T02:25:02Z")

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can u tell me where the idle air valve control is located at, i looked just about everywhere, could it also be the ac low pressure switch ?