# My POS Altima **URL:** \ **Category:** PittSpeed Automotive\ **Created:** [October 25, 2008, 5:50am UTC](https://forums.speedlife.net/t/my-pos-altima/200335 "2008-10-25T05:50:12Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![77rednecktruck](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/77rednecktruck/32/5966_2.png) [@77rednecktruck](https://forums.speedlife.net/u/77rednecktruck)\ **Post date:** [October 25, 2008, 5:50am UTC](https://forums.speedlife.net/t/my-pos-altima/200335/1 "2008-10-25T05:50:12Z")
So my 2000 Nissan altima is idling like shit, the engine is a KA24DE. The rpm’s bounce from 400rpm to 800 rpm, but it idles fine when fast idle is on or the air is on(because the idle is a little higher). I have replaced the 02 sensors, did a complete tune up, checked the egr, and checked for vacumn leaks. I get pissed and took it to a shop last week. They said cylinder #4 is not firing but it has spark, compression, and fuel. :nuts: They swapped injectors and swapped a distributer to try and resolve the issue, but it did not work. They also said the IAB is working as it should. The code it throws is a generic code for running lean, thanks Nissan, that really fucking helps. 🙂 Any ideas? ---
**Author:** ![Darkstar](https://avatars.discourse-cdn.com/v4/letter/d/b487fb/32.png) [@Darkstar](https://forums.speedlife.net/u/Darkstar)\ **Post date:** [October 25, 2008, 8:07am UTC](https://forums.speedlife.net/t/my-pos-altima/200335/2 "2008-10-25T08:07:10Z")
buy lighter colored bedsheets cause they hide stains better. ---
**Author:** ![BlackZ28](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/blackz28/32/5932_2.png) [@BlackZ28](https://forums.speedlife.net/u/BlackZ28)\ **Post date:** [October 25, 2008, 1:27pm UTC](https://forums.speedlife.net/t/my-pos-altima/200335/3 "2008-10-25T13:27:02Z")
if it runs fine other than at a low idle, it would make me think its not a fuel/spark issue and possibly an idle control issue. does this car have an IAC motor? ---
**Author:** ![1320](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/1320/32/5949_2.png) [@1320](https://forums.speedlife.net/u/1320)\ **Post date:** [October 25, 2008, 4:28pm UTC](https://forums.speedlife.net/t/my-pos-altima/200335/4 "2008-10-25T16:28:43Z")
bluebird sr20det swap should fix your problem. ---
**Author:** ![Darkstar](https://avatars.discourse-cdn.com/v4/letter/d/b487fb/32.png) [@Darkstar](https://forums.speedlife.net/u/Darkstar)\ **Post date:** [October 25, 2008, 5:31pm UTC](https://forums.speedlife.net/t/my-pos-altima/200335/5 "2008-10-25T17:31:43Z")
rofl @ that idea this married fart thinks a sho taurus is fast ---
**Author:** ![06se-r](https://avatars.discourse-cdn.com/v4/letter/0/c5a1d2/32.png) [@06se-r](https://forums.speedlife.net/u/06se-r)\ **Post date:** [October 26, 2008, 5:09pm UTC](https://forums.speedlife.net/t/my-pos-altima/200335/6 "2008-10-26T17:09:54Z")
> [@Caught Police in action 2 pics](https://forums.speedlife.net/t/caught-police-in-action-2-pics/38448/17): > > So my 2000 Nissan altima is idling like shit, the engine is a KA24DE. The rpm’s bounce from 400rpm to 800 rpm, but it idles fine when fast idle is on or the air is on(because the idle is a little higher). I have replaced the 02 sensors, did a complete tune up, checked the egr, and checked for vacumn leaks. I get pissed and took it to a shop last week. They said cylinder #4 is not firing but it has spark, compression, and fuel. :nuts: They swapped injectors and swapped a distributer to try and resolve the issue, but it did not work. They also said the IAB is working as it should. The code it throws is a generic code for running lean, thanks Nissan, that really fucking helps. 🙂 > > Any ideas? if its running lean, try putting an o2 spacer on the 1st o2 sensor. i used a spacer on mine to get rid of a cel, and it worked, but made my car run real rich, like my mpg dropped almost 3-4 mpg. i know its the best response, but it worked my nissan ---
**Author:** ![77rednecktruck](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/77rednecktruck/32/5966_2.png) [@77rednecktruck](https://forums.speedlife.net/u/77rednecktruck)\ **Post date:** [October 27, 2008, 7:17pm UTC](https://forums.speedlife.net/t/my-pos-altima/200335/7 "2008-10-27T19:17:57Z")
The shop said that the IAC is working as it should. I am thinking a cam is broke or valves are stuck closed. Why else would a cylinder be dead if it is getting fuel and air and has compression? ---
**Author:** ![stenseltizm](https://avatars.discourse-cdn.com/v4/letter/s/a88e4f/32.png) [@stenseltizm](https://forums.speedlife.net/u/stenseltizm)\ **Post date:** [October 28, 2008, 7:28am UTC](https://forums.speedlife.net/t/my-pos-altima/200335/8 "2008-10-28T07:28:40Z")
If a cam was broken or valves were stuck closed there would not be compression. Not to mension the noise and mechanical mess an engine running with a broken cam would make. If they say cyl 4 is not firing do a simple test. Let it run and idle then pull the #4 plug wire. See if the idle changes at all. If cyl 4 is dead then the idle should have absolutely no change. How do you know it’s getting fuel? But a screw driver to the injector and put the handle to your ear, you’ll hear a nice solid click if the injector is functioning properly. Compare it to the other 3 for rythm and frequency etc. Is your coolant level good with all air bled? Don’t know about nissans but in a honda if you get an air bubble in your coolant it will make the intake idle valves do weird shit.