Post by
OwnerCS »
https://forums.nicoclub.com/ownercs-u161666.html
Sun Jun 24, 2012 6:31 pm
The first ting my local Nissan dealer told me about my 99 I30 was the IACV can fail and cause ECM to fail. When I bought my I30 it was not running due to a failed ECM. So I replaced the IACV with one from a junk yard where I got the ECM. Actually the dealer reprogrammed the ECM for the car's keys (NATS) for $115. It turned out that the 5th gen has some connection between a shorted IACV and the ECM which was not 99's particular issue.
On the 4th gen automatics, I have read there is a electric motor mount (front) that can short and take out the ECM. Since I really didn't find the source of my failed ECM, I unplugged the electric motor mount as a precaution. The car has over 225,000 miles so I know it won't last forever. If you can find an ECM and IACV combination from a wrecked car in a junk yard, then a good dealer can use their CONSULT tool and reprogram it to work with the car's keys for an hour of labor charge. Of course you'll need to get the car towed to the dealer for reprogramming.