new ecu needs new isc motor?

[presterone]

Just got my car running on a rebuilt ecu from zdr electronics, huge warning on the cover says "replace isc before use". What's up wit DAT?

 

[transparentdsm]

the ISC is prolly what fried the last ecu.

 

[holeshotmoe]

A little info HERE . It's a different car, but the same concept and ISC design. A bad ISC can blow the driver chips on the ECU board. As a minimum, you should test it before connecting the new box.

 

[GSTwithPSI]

The very first post in the how to section addresses this issue and more...

 

[presterone]

Thanks guys, ya i just unplugged the isc before I started the car with the new ecu. The warning on the ecu looked like a generic warning label so I didn't know if there was something I was missing like certain isc works only with certain ecu or whatever.

 

[slugsgomoo]

if you have FIAV, it will leak on the ISC, which will fry the drivers in the ECU. Since your ISC was replaced you're probably fine, but I'd do the free FIAV delete (google search it's one of the first results, on tuners).

Unless you live in Fargo or something where it's -150* below absolute zero, FIAV doesn't matter in my experience.