3 posts / 0 new
Last post
Crazycanadian
Offline
Last seen: 3 weeks 6 days ago
Joined: 04/08/2020 - 14:38
Skyline GTR High idle issues

So I've got a Skyline I know very little about. I don't know how well it idled before work was performed on in it. So It idles around 1800 RPM with the idle air control valve plugged in. With the Idle air control valve unplugged it'll idle around 1500RPM. The work performed on the car was removing the intake manifold to replace some leaking coolant lines that were under it. The intake has been smoked to check for air leaks. The throttle linkage has been checked to make sure its closed all the way.

 

I am struggling to get the idle down to a more acceptable level of 900RPM or so. As far as I can tell the motor is stock with bolt ons. Front mount kit, intercooler pipes, exhaust. I've plugged into the ECU and found the TPMS was calibrated in correctly. So I calibrated the min/max. I also checked TPMS adjustment. I don't really like the min value of 1.6 - 1.7V I am reading. I've checked this is the voltage coming out of the TPMS sensor.

I am not sure if there is a way I can upload the tune file and have someone look over it and give me any advice.

AEM_NS
Offline
Last seen: 3 days 52 min ago
Joined: 06/06/2014 - 09:31
What's the part number of the

What's the part number of the ECU you have? Do you appear to have control of the IAC? IE if you change the base position up or down, you get a corresponding change in engine speed?

Crazycanadian
Offline
Last seen: 3 weeks 6 days ago
Joined: 04/08/2020 - 14:38
Hi there thank you for the

Hi there thank you for the response. This is a side project for me so I haven't been checking this forum. I was able to adjust the idle tables and get it to idle down to a more acceptable level. I have a serial number off the ECU. 6620-0619

This file is the original calibration I pulled from the car. Skyline Calibration stock.02v02.cal

 

This is the one I played with a little bit. I haven't done much tuning. This just doesn't look right to me, Skyline calibration modified.02v02.cal