1991 Dodge Stealth • 150 miles

I drove my car home the next morning it would start for 5 seconds the die over and over it will run good in the 5 sec I was told it was an ecu. I replaced it it ran good I let it sit and idel it died after7 mins it won't start now it has no fire at the coil to the wire and its all I also ck the injectors wit the test lite and I got nothing. Thinks so much. For any help! Its going to be a dirttrack racecar so I realy care less if its on switches
February 14, 2013.

Do you have a factory alarm on this vehicle? IT sounds like it is shutting the vehicle down.