Help, It wont start =-(

[dsmspyder97]

Okay, First thanks for looking. I have a 90 gsx with a brand new motor (500miles) just installed from karking. Car was running great, until i got stranded and discovered my alternator was shot. So i bought a new one and installed it. Everthing was fine......for 2 days. I was driving the car, parked it, ran into the house to grab some $$$ when i came out like 10 minutes later she didnt want to start. So i did some diagnosing, I pulled the plugs and grounded them, they were sparking really weak. So then i wen to the store bought some plugs and wires, but before installing them i tried testing the old ones, Now they sparked hot. So i let the car idle (3 minutes) then when i came out of the house ready to return my unopened plugs and wires the car was off. I tried to start again and nothing happened just crank crank crank. So i pulled the plugs yet again. This time I had absolutely no spark on any wire and plug. Oh yeah i also have a optima red top in. Its barely a month old, Now dead for the last two days. I checked all my grounds they are all on nice and snug. I doubt its the coils considering two dont usually go at once (ive had one die on me before but then only two fire and two dont.) Possibly the igniter??? Or Ecu??? Please help

Josh

 

[justin0469]

I would say check electrical connections on the alternator, starter and battery. Make sure they are still connected, tight and clean.

 

[GVR4592]

It could be the power transistor or the ecu. I would pull the ecu and check for leaking caps first, then check the power transistor.

 

[dsmspyder97]

I did, everything looks nice, im taking apart the ecu as im typing, thanks for the help. Oh and theres no check engine light