dohc v6 Posted April 28, 2008 Report Share Posted April 28, 2008 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. Quote Link to comment Share on other sites More sharing options...
IRONDOG442 Posted April 28, 2008 Report Share Posted April 28, 2008 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. Quote Link to comment Share on other sites More sharing options...
1990lumina Posted April 28, 2008 Report Share Posted April 28, 2008 He wants to know if his 11.59k ohms is close enough tot the required 11.8 Quote Link to comment Share on other sites More sharing options...
dohc v6 Posted April 28, 2008 Author Report Share Posted April 28, 2008 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? Quote Link to comment Share on other sites More sharing options...
Crazy K Posted April 28, 2008 Report Share Posted April 28, 2008 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? Quote Link to comment Share on other sites More sharing options...
IRONDOG442 Posted April 29, 2008 Report Share Posted April 29, 2008 THere is a 10% margin of error thats allowed if your key is reading that then there is something else wrong. Quote Link to comment Share on other sites More sharing options...
Crazy K Posted April 29, 2008 Report Share Posted April 29, 2008 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. Quote Link to comment Share on other sites More sharing options...
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