Carlisle

Well I'm at a tough spot. I bought a Diablosport tuner and it gives me diagnostics. My car won't start and the troubleshooting reading says the Cam Sensor, so I replaced it and still no start and the same reading. What now? The fuel pump is on and it has fuel at the rails. The starter motor is turning normally and a red light on the fuse relay box is on. HELP anyone!

chpmnsws6

Is the reference voltage low?

Is VATS tuned out?

Getting spark?

Getting fuel?

Carlisle

What is VATS? Have fuel and hear pump activate when key turned on.

tbone heller

VATS = Vehicle Anti-Theft System

Carlisle

I have a new GMPerformance off road wiring harness and E38 computer that isn't tied to the Miata so I don't think that's it. The first time I started the car I had wired the ignition wire to the Miata fuse relay box and it was hot from the battery and it started but wouldn't shut off. I had to disconnect the battery. So I wired the ignition hot wire to the cigar lighter fuse and it works off the key but doesn't start.

Carlisle

Well I still haven't had anyluck with the igniton key to start the car. SO I went back to the constant hot wire and it started right up.
BIG Question is where am I going to get that key activated power source????

chpmnsws6

On the NA's, we had a few large blue wires that go from the ign to the ignitor and a few other things that I used as PCM ignition sources. It has 12v in both the start and run position of the key.

Carlisle

I looked at my ignition key switch and it only has one blue wire and the rest white. So I trimmed it back and gave it a go. Thanks buddy it worked!!!
So for future knowledge to any NB guys, the black with red stripe is the starter wire and the blue is the constant keyed hot.