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LT1_Fireman
09-22-2010, 09:48 PM
Ok guys, I am working on the final touches for the mazda in my sig... I have a slight issue though. I want to know since in turns over, fires up, starts to idle then dies every time if that sounds like Vats to you all? It is all out of a 93 camaro, so its a flippin chip. I have no way to check it out and see if it was tuned out ,as well as the emmisions stuff, like I was told when I bought the setup. I have checked all of my work and its the only thing I can think of that it can be. Any ideas or input into the situation is welcome.
Thanks all.
F.G.
09-22-2010, 09:55 PM
That should not be VATS. If it were VATS it wouldn't even crank.
LT1_Fireman
09-22-2010, 10:08 PM
IDK thats what I thought too im at a loss this is the first lt1 swap Ive done... plenty of ls swaps tho and never had one do this.
razor02097
09-23-2010, 06:50 AM
When you did the swap did you keep VATS? Since it is a 2 part process one relay for the starter and another part that sends a signal to the PCM, it is possible for it to start and die after a short while.

I'm not sure how the 93 PCM is tuned other than a chip is burnt and installed. I don't know if you need to buy a chip or if you can hook a computer to the diagnostic port to see if VATS is turned on.
Fastbird
09-23-2010, 07:31 AM
Ok, yes the VATS is two part. But, being that the car is missing the resistor in the cylinder and associated wiring to the ECM, I would decidedly say that it's NOT vats that's your issue.

Is the car dropping spark or fuel pressure? Does it stay running if you throttle it?
LT1_Fireman
09-23-2010, 11:02 PM
It is losing power to the injectors just as soon as it fires
razor02097
09-24-2010, 07:29 AM
Ok, yes the VATS is two part. But, being that the car is missing the resistor in the cylinder and associated wiring to the ECM, I would decidedly say that it's NOT vats that's your issue.

Is the car dropping spark or fuel pressure? Does it stay running if you throttle it?


I am saying it is probably because the PCM is expecting a signal from a VATS module that is no longer there. Of course I could be way off, I'm still an amateur to tuning the PCM :monkey: