Blowing 7.5a fuse underhood for ECU, in a real jam here. What all is connected?

[240z4u]

I have an RB25DET in an S14 and have a major problem, I keep blowing the 7.5 amp fuse underhood that provides power to the ECU.

What, besides the ECU is on that circuit?

I have unplugged the maf, 02 sensor, changed relays with no luck. I can't recall exactly what else could be causing this. I am stuck home right no with no way to work. I hate this car sometimes.

I also unplugged my fuel pump wiring, and that didn't change anything either.

Does the cas get power from that circuit too?

Evan
Modified by 240z4u at 7:27 AM 11/4/2009

[gawdzilla]

Does the cas get power from that circuit too?

yes, it should be. the CAS is also powered by the switched side of the ECU relay. both the trigger and switch side of the ECU relay go through that 7.5 A fuse.

[240z4u]

Got it, MAF wire was chafed and partially shorted.

Thanks!

Evan

[RustspecS13]

I would pop open your ecu and check the circuit that provides power to the maf, injectors etc etc. When my maf wires shorted on my turbo it burnt that trace and I just soldered in a little jumper wire. My rb seemed to idle smoother too.

~Alex

[240z4u]

Will do, thanks!