99ws6ta346

Having intermittent starting issues not related to the VATS in my opinion. Car will crank but not turn over. Seems like the injector pulses are turned off. Also, I have a little red light on the dash that blinks that I believe to be part of an aftermarket alarm system of some kind that is definitely involved. I find no mention of any such system in the manual. Can anybody shed some 'light' so to speak on the topic?

RPM WS6

iTrader: (3)

That red LED on the top of the dash is a factory light, for the factory alarm.

As for the crank-but-no-start condition, have you checked fuel pressure during cranking? I see that you have aftermarket injectors, but no mention of a fuel pump. I would probably start there, especially if the pump is aftermarket or has a lot of miles on it.

dreww

iTrader: (1)

Make sure fuel pump is priming with key on.

Check ign relay

Is security light staying on?

Could be ign switch

LS6427

iTrader: (2)

If this just started out of the blue and fuel pressure is good......The Crank Shaft Positon sensor might have failed. You will get no spark.

But it's still probably a security issue. Because Crank Shaft sensors usually give all kinds of problems for a few days first.

.

99ws6ta346

Haven't tested the fuel pressure when this happens.Thought it was a VATS thing, modded that and it still persists. If it were the VATS issue, my understanding is that it would not crank at all - it would do nothing. I tested this by mis-wiring the mod (unintentionally) the first time and effectively doubling the resistance (key + the resistors) and it did not even crank.

I was not aware that these cars even came with factory alarms. The UM makes no mention of it. I have only owned this car for a little over a month and am in the process of 'un-*******' it one problem at a time.

I'm not sure the status of the fuel pump as far as whether it is stock or aftermarket but I need to find out.

It seems like if I don't use the key fob to lock the doors and unlock the door using the key, it doesn't seem to happen and the car starts right up. I also notice however, that the dash and exterior lights seem to blink between when I open the car and start it so I guess it's a reasonable assumption that the problem is indeed with the factory alarm. I did find a thread last night explaining the procedure to disable the factory alarm but I was half asleep when I read it. I will definitely be revisiting that thread at some point today.

99ws6ta346

Installed a VATS bypass module this weekend, the problem persists. Disabled the factory alarm via a procedure I found on here, the problem STILL persists.