Slo2gn
Proven Member
- 68
- 6
- Apr 27, 2014
-
Honolulu,
Hawaii
I have a 97 GST with a Non Eprom ECU I tried swapping a Eprom and socketed Ecu in did the plug swap with no success The car would just turn over but not fire so i swapped back in the non eprom ecu and still having the same issue.. so I ran down a to do list of no start condition.
Initially I ruled out fuel because the Afpr was reading fuel pressure on the return side.. checked spark and that was very good.. so then I had a friend crank over the car and it was reading almost 70 psi on cranking which was wierd because I set the AFPR and never had any fuel pressure issues in the past.. after a second look I pulled the fuel rail and had a friend crank and no fuel came out of the injectors then I ran a test light to all the injector pigtails and, there was no power to all 4 injectors..
I did some searching on here and google and came back with MPI relay or the ecu has an issue.. Can some guide me in the right direction of how to test the relay to see if they are working properly? also a picture below of what MPI relays my car is equipped with
Initially I ruled out fuel because the Afpr was reading fuel pressure on the return side.. checked spark and that was very good.. so then I had a friend crank over the car and it was reading almost 70 psi on cranking which was wierd because I set the AFPR and never had any fuel pressure issues in the past.. after a second look I pulled the fuel rail and had a friend crank and no fuel came out of the injectors then I ran a test light to all the injector pigtails and, there was no power to all 4 injectors..
I did some searching on here and google and came back with MPI relay or the ecu has an issue.. Can some guide me in the right direction of how to test the relay to see if they are working properly? also a picture below of what MPI relays my car is equipped with
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