Urgent Need Help

[Domesticated]

You're correct about everything. I didn't mean anything bad by my reaponse. My computer died today so I've had to type on my phone.

So I'm pretty sure the P13 fried. I can get everything to work with the PT3, but it idles super low and spews black smoke. That is until the fuse fries a few minutes later. So I need a new P13. I havn't modified any wiring, so I haven't cut anything. What all runs through the ecu that could cause the ecu fuse to blow and wont throw a code with a PT3? This sucks. I was so happy for about an hour...

[Domesticated]

I also just realized my cel never initially came on. Shouldnt it have being as how the tcu wasn't plugged in?

[dj_ender]

I also just realized my cel never initially came on. Shouldnt it have being as how the tcu wasn't plugged in?

No, I have run an auto ECU in a manual, no CEL's.

[Domesticated]

I thought you had to jump the resistor? So anyway, the P13 will pop the fuse instantly, the PT3 takes a little while. Any ideas?

[SOHC-FTW]

Check the thermostat ground, aswell as the ground from the starter which i think goes to the main fuse block.

[Domesticated]

So the starter is independent of the ecu. You can crank it withought it in. I hooked the power cable to it. Also my battery ground hooks to the starter. Then there is also the little clip hooked to the starter. I find it curious the P13 pops the fuse instantly and the PT3 takes a while. Im going to jack the car up and look under the hood to see if something is pinched somewhere.

[SOHC-FTW]

It sounds most likely like a ground issue did you do the 5spd swap or that shop? Go over every Ground an power wire. Is it poping the 75 or 100amp battery fuse to?

[Domesticated]

I did it. I used my grandpas shop. Its the 7.5A ecu fuse.

[Domesticated]

Any idea where the ecu ground is?

[djcaz_aom]

Ok, your tcu is bad. Unplug it and do the bypass that is in the stickies.

The only things connected to the #24 fuse are the tcu, ecu, radio and clock.

It is the wht/yel wire for reference. Pin A20 on the tcu. Pin D1 on the ecu.

The ecu is grounded at the thermostat housing.
Hope this helps.

[Domesticated]

I have a permanent switch wired into the kick panel so I can just flip it to check for codes. My fuse panel has a seperate fuse for the radio. Ill check the tstat tomorrow. I should have a decent amount of diagnostics in the morning.

[Domesticated]

Must have been bad grounds. I took every one off and either clean or rebuilt it. Car runs good now. It has a slight chatter at low rpm. Im gonna recheck tranny fluid level. I know my tranny mount is about a half inch too long so I need to pull it and modify it. Lifetime warranty on axles so I should be fine if I break one.