# 300zx won't idle

**URL:** <https://community.cartalk.com/t/300zx-wont-idle/47583>\
**Category:** Maintenance/Repairs\
**Tags:** nissan, 300zx, start, 300\
**Created:** [April 17, 2010, 6:12pm UTC](https://community.cartalk.com/t/300zx-wont-idle/47583 "2010-04-17T18:12:10Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![nategibson](https://avatars.discourse-cdn.com/v4/letter/n/a9a28c/32.png) [@nategibson](https://community.cartalk.com/u/nategibson)\
**Post date:** [April 17, 2010, 6:12pm UTC](https://community.cartalk.com/t/300zx-wont-idle/47583/1 "2010-04-17T18:12:10Z")

</div>

My 1990 300zx will only stay on while I’m holding the gas. If I let go the RPMs will drop and the car will die. It revs fine and everything, but won’t even try to idle.

---

<div class="post-metadata">

**Author:** ![waterboy](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/waterboy/32/764_2.png) [@waterboy](https://community.cartalk.com/u/waterboy)\
**Post date:** [April 18, 2010, 2:05am UTC](https://community.cartalk.com/t/300zx-wont-idle/47583/2 "2010-04-18T02:05:05Z")

</div>

Is the maintenance up to date, air filter, gas filter, plugs etc?

---

<div class="post-metadata">

**Author:** ![Caddyman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/caddyman/32/23_2.png) [@Caddyman](https://community.cartalk.com/u/Caddyman)\
**Post date:** [April 18, 2010, 2:08am UTC](https://community.cartalk.com/t/300zx-wont-idle/47583/3 "2010-04-18T02:08:39Z")

</div>

Depending on the flavor of the fuel injection, there is an idle-air control solenoid that pretty much controls idle speed…If the EGR valve is stuck open, the engine will not idle…Any large vacuum leak will kill the idle…