shanekerry

well I seem to have solved the problem somehow, I warmed the car up let it idle was sat at about 1800rpm and was going to unplug 02 sensor to see if it made any change, so I moved the plug (to unplug it) and the idle dropped down to about 800rpm. Been driving it around all weekend and its been perfect so i guess theres a loose connection somewhere

just been out and messed about with it, unplugging the yellow sensor at the front made no difference to the idle speed but made the engine fan kick up to 100% unplugged an o2 sensor and the idle went down and then hunting around plugged back in again and idled up at 800rpm and stayed there, gonna drive around a bit today see what happens as usualy when it idles normally as soon as you drive just fires back up again!

thats cool gives me some stuff to look over thanks!

yeh got it from Murt known him for a little while through SXOC, actually have a slight issue with it at the moment with the Idle speed otherwise perfect started a thread http://www.300zx.co.uk/forums/showthread.php?165123-High-Idle&p=1682456#post1682456 don't really know anything about these engines so still finding my way in sort this out

yeh here you go i assume you mean of the 300 and not my fire damaged 200 lol

Hi guys, new 300 owner here, I had a 200sx S13 for about 4 years so im not a complete newbie but here goes. My car is idleing very high at around 1800RPM but not all the time, cold start it idles high (as expected) at about 1800 if i leave the car idling and don't drive it takes a few mins but then eventually warms up enough and the idle drops down to around 800rpm but if i drive the car more often than not the idle then sticks at about 1800rpm it doesn't hunt or anything stays at a constant 1800rpm. Occasionaly the idle does go back down to 800rpm but this is proberbly 1 in 10 times I use the car. Sometimes i've also noticed idle changes when turning off the lights (HID) the car also has a Mines ECU Map (not sure if this is relevent) I have searched and I have read some posts about high idle but thought I would post this aswell. any help would be great thanks

Owned a 200sx S13 for about 4 years until the engine bay caught on fire!

Hi all, new guy from Bristol here I have a 94 UK 300zx turbo bought from another member earlier in this year.