sensing a isc failure

[vrfour_nz]

just recently my car has been doing the high idle,occasionally not starting..i suspect something is happening to isc/ecu. I was going to fit a blanking plate to fiav soon. Do 1G's run with the isc plug disconnected when they are blanked? Do they throw any codes?

 

[SleepinGVR4]

Actually one of the first things I believe VFAQ says is to just unplug the ISC, especially on a high mileage stock car. Just in case the ISC does decided to crap out it doesn't take your ecu with it. And no I have mine blocked off completely and it shows NO codes and runs and idles fine. It struggles to stay running on a cold start but I just feather the throttle for a minute and let it warm up and its fine. I've been doing this for about a year now.

 

[alansupra94]

Interesting.

My ISC is fine I believe but I will keep this in the back of my mind so it doesn't eat my ECU.

 

[SleepinGVR4]

There is a lot of information here Click

 

[vrfour_nz]

thanks for that..i'll be pulling the plug on it before the ecu fries.