NightRunnerIROC

Hi, first time posting here, drove my relitivly recently purchased 88 IROC to work, and after I left, I lost power to my ecm, I know this because I can't get tuner pro to hook to the ecm, and I don't have a check engine light on accessory mode like I did before, I tried a parts computer, no luck so I presume it's wiring involved, the fusible links near the battery are perfect, no sign of stress or them possibly burning out. Need advice so I can get my car home, preferbly without towing it 😂 my next step is cleaning the whole fuse block and trying all new fuses, but if anyone else has any idea it would be appreciated.

Tuned Performance

iTrader: (92)

Ecm and fuel pump power are off the fuse next to the battery.
B1,c16 hot all the time a6 accessory power

NightRunnerIROC

Its a fusible link correct? With a single pigtail connector for each? One orange wire, and one black?

Tuned Performance

iTrader: (92)

It’s a fuse on the fender, should be orange wire

RBob

iTrader: (1)

On top of the under-hood inline fuse that Tuned-Performance mentions. There is an ECM fuse in the fuse block that provides key-on power to ECM pin A6. That input is what tells the ECM to power up and down.

Need both for the stupid silver box (ECM) to operate.

RBob.

NightRunnerIROC

It was this! Had no idea there was an actual 20 amp hooked up to a pigtail, it was blown, swapped it out and I'm back on the road, I can't thank you enough!

Tuned Performance

iTrader: (92)

Now to determine why it blew

460tpi

afternoon, new to site and it won't allow me to inbox you. But do you happen to remember how to connect the bbc tpi unit you sold? I'm catching hell. Not your unit but same ramport from s&p.

460tpi

If you discover you need to replace the tpi harness make a post , i have quite a few in my area pretty clean for parts.

460tpi

If you discover you need to replace the tpi harness make a post , i have quite a few in my area pretty clean for parts.