My 92 Indy 500 efi is still shutting down after runiing great for 6-8 minutes. The ready light goes out , everything shuts down , but if I hit the key quick enough , it'll keep running. While listening at idle , it revs slightly before it dies. I can get the same result unplugging the small , single wire from the CDI box. Is my CDI box bad ? I tried a different ECM with the same results. Please point me in the right direction , theres just too many wires !!
When the power goes down I imagine the fuel pump shuts down too. Hitting the key again powers the computer as well as kicks the pump on again. So far the only thing I know for sure is its not the ecm !
Still looking for some help ! Fires great and runs for 5-6 minutes then power shuts off and everything stops. I've tried a different ECM , CDI box , relays , fuseable link and dropping resistor. Still did the same thing ! Where does the power to the ECM come from ? There are still no codes . I'm pullin my hair out !
Battery load tested fine. Sitting , its just over 12.2v , running at 3100rpm its at 14.2v. Still shuts down , its driving me nuts. Its almost like its on a timer ! Same run time each time. What am I missing ? Could a ground cause it ? What route does the power take to the ecm ?
I'll check the filter , but it doesn't explain the READY light going out before it dies. Thats why I've been leaning towards electrical. After a filter change and test , Can I run direct power to the pump from the battery so it won't shut off ? ( just a temporary test )
I don't think he makes it on here much. It's been a long time since I've seen him post anything. You might have better luck emailing him if he doesn't have it set up so it sends him an email when he gets a PM from this forum. If you can get a hold of him I'm sure he can help you figure some stuff out.
Thanks, I'm really frustrated ! I have a full wiring harness that was supposed to have been from a 92 , but it has a toggle switch near the relays ? My next plan is to replace each section of harness and test.