ka24e idle problem~!

[dannys13]

hey guys, im new to nico club, i have a

1990 nissan 240sx se s13motor: ka24etranny: sadly an auto

problem: my engine seems to be idling at 1300 when i first start it, then after it warms up to regular heating conditions and about 25 highway miles later the engine idles at around 1800 to 2000 rpms?!!

1. i checked all the vaccum lines for cracks, i tested the lines by spraying carb cleaner to hear for a richer idle, but no.

2. i went to my local nissan dealership to get vaccum diagrams since they were not in my chiltons book, and they were all connected and in the correct spot.

3. i adjusted the idle screw right after i started the engine(cold at 1300) down to 750rpm, but after driving it for a while the rpms were still too high.

i heard to test the throttle sensors ohms to see if the sensor was bad, which should be at 2omhs, when fully closed,but i do not have an ohm meter and i dont think thats the problem. it didnt used to idle that high b4 and i really find it very anoying. also, when i drop the lever to d (drive) it kind of tugs into 1st since the idle is high (i think). does anyone know what i should prolly check?
Modified by dannys13 at 11:47 AM 5/1/2009

[s13princess]

i have the same problem on my five speed...any help

[hatterack89]

hey man i would still pull off the tps (throttle position sensor and check it.) i had the same problem and it was my tps. but you can also look at your idle air control valve or check your mass airflow sensor.