96 Ranger/ 550 esp

I just tried voltage sense on both HIGH and LOW. I have the same results. It seems that when the truck finally settles to idle is when it shuts down, regardless of how quickly or how long it takes, as soon as it's idle it shuts down. It's not just around the 10 second range, sometimes it takes 5 seconds and sometimes longer than 10. I just pulled the looms and tape off of all of the wires to look for anything, but everything seems to be in order.

I'm thinking that maybe the tach wire is in the wrong place for tach sense, but everywhere I look says tan / YELLOW at coil which I do not have. I found one schematic that said yellow/white, and I have one of those, so that's where I put it. I had this same 550esp in my 94 Escort with no problems like this, right up to the day I took it out it worked perfect.

Any suggestions?

did you learn the tach? did you test for the tach wire with dmm

are relays all working send 12V to ign acc

check fuses on relay bank on alarm

I did learn the tach, I wanted to wait till it settled to idle to learn, but the 550 ESP only learns if you press within 5 seconds.

There's only 1 relay to the ign, it's all it ever had, think I need another relay? There's only 4 relays altogether, kill,starter,ign,acc. I'll double ck the relays tomorrow, but I would not think it would stay running 10 sec if the relay was bad. I did ck the 2 30a fuses, which I have running to seperate ign wires that provide 12v.

This alarm comes with 2 acc relays, do both need to be hooked to the same wire? If one's not connected could this cause the truck to shut down?