Vats system- whats it do

[dohc v6]

I am about done with my OBD II swap and I had the fuel pump working and the car would start and then die about 2 seconds later. So, ken, taylor and I have been working on installing the vats box in. So I installed it and hooked up the wrong resistors. I put them in paralles not series. Soooo, I hooked them up right and still the fuel pump would not turn on. So I disconnected the Vats box and no fuel pump and no data link connection either. I checked the resistance and had 11.59k ohms instead of 11.8, How close does the reistors have to be to the key resistace? Next would the vats box send a signal to the computer to shut the fuel and the data link port? I did nothing other than hook up the vats box between the fuel pump running and not running.

[IRONDOG442]

The vats system reads a resistor pill on your key and sends a 12 volt signal to the starter enable relay and the fuel pump relay when a key with the poper resistance is placed inside the ignition.

[1990lumina]

He wants to know if his 11.59k ohms is close enough tot the required 11.8

[dohc v6]

Well I am going to make it as close as I can to 11.8 and see what happens. Other than that what turns the fuel pump off?

[Crazy K]

key number 15:

range:

normal 11800 ohms

low 11328 ohms

high 12292 ohms

 

so you should have been in range.

 

can you check to see that the PCM is getting power still?

 

[IRONDOG442]

THere is a 10% margin of error thats allowed if your key is reading that then there is something else wrong.

[Crazy K]

last conversation with dohc v6, we chased down the fact that his pcm was not getting it's switched power source. by tracing, a bad wire was found and is being fixed.

 

it remains to be seen if the VATS will work.