I've been working on my friends 90 Integra and I found the appropriate PR4 ECU to go in it, since someone had a PM6 ECU in before. It ran okay with the PM6 but should be better with the PR4.

Anyway, he got the PR4 and installed that with the battery unhooked and then hooked the battery back up, then when he turns the key on it blows the ECU fuse. I'm kinda stumped, the PM6 was working fine, and it can only be installed one way. Are there any possiblities here besides a bad ECU? He's tried it more than once and it blows the fuse when the ECU gets power. I'm assuming it had the right size fuse, but I don't know for sure.

All help appreciated.
Thanks,
John


Modified by turbofreakjohn at 10:30 AM 2/14/2006

 

Anyone? Help.

 

Bump.

PM6 swapped back in, works fine, PR4, still blowing fuses instantly, what gives?