Racepak help

ive been running my racepak which now makes my 3rd year. I have never had problems retrieving data. this year I have made 2 runs so far and somehow I seem to have lost fuel, oil, and boost pressure. egts, driveshaft, rpm all seem to work fine. it is the 3 pressures that have just disappeared. when I uploaded the 2 runs, these 3 were just gone. I spoke to racepak today which they seem to think I have a bad wire. can anyone have any input or help on how to see which one is bad without starting my car a dozen times trying to trouble shoot it? with the car not running, as it sits, I hit run telemetry and it seems to be all normal. they are all there and pressures read 0 and egts read 70 as is the air temp. I am lost. the only thing I changed is the rear end magnet I changed to read 8 magnets. is it possible I did something there? thanx guys

 

I suppose I forgot to add that it is a v300sd

 

Temporarily plumb up an air regulator to the pressure sensors and hook up shop air. You can run the pressure up and down without starting the engine. Hook a guage up and you'll know what the pressure is supposed to read - I've used my leakdown tester as it gives you a regulator and gauge. Make sure to start and keep regulators fairly low so you don't hurt anything.

 

Did you mix up cables by chance. I have that same system and don't use those boxes. I've never had a problem. Only when I mixed up v net cables

 

I dont think i mixed up any wires. Unless i put the wrong plug on the wrong oil and boos pressure gauge. But i have been running this the same way for 3 years now. This is why im confused

 

All VNET individual sensors or do you use any USM's or transducer box's?

 

all Vnet. I have them set up in a row. I have the fuel pressure connects to egts for 1 3 5 7. an extension cable then oil, boost, and egt for the other side. then cable to go to the racepak.

I was just looking more into it. I went to car config. read car config. when I opened that up, it showed a box that said car configuration does not match what was there. so I did a read car configure and a write configuration. it appears to be working now. I tested it. did a recording and used air to blow info fuel pressure. when I downloaded this test, it showed everything was there and it actually read all of the sensors. next step is to test it with it running.

 

I believe when I switched the setup for the rear end sensor. I changed it from a 2 to an 8 magnet collar. when I did that, It must have changed the configuration. racepak explained to me that under telemetry it reads in real time which is different than a recording. I am not sure that makes sense or not. from testing it today with the car off, I did a recording with the motor off. I use compressed air to blow into the fuel pressure and it seemed to read and all be normal. I will test it this weekend in the driveway on projacks.