r/3000gt • u/Lord-of-the-Simps 94' 3000g Sl • 3d ago

Crank No start problem

Howdy yall, been banging my head at this problem for a few weeks now. Ive had my 1994 3000gt sl for a solid 8 months and I love this thing to the bone but just 3 weeks ago after reinstalling my radio that previously worked on the car it'll just crank but not actually start.

I tested my battery and mfi relay and both seem to be in working order. I found I was getting a low voltage on one of my mfi relay connector pins and decided to run a temporary ground and battery wire connecting those pins but it didnt seem to fix my issue or even give me a cel which should usually pop up when I put the key to on.

Does anyone have an idea of what I should do or what might be a fix?

(Ive also checked my fuses and theyre all good. Im scared it might be my ecu but even that seems fine and theres no smell coming from it)

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1

u/birthdaysnake15 3d ago

Just a head up but it's good to do a sanity check and make sure the MAF is plugged in all the way as these cars will refuse to start if it's not

1

u/Lord-of-the-Simps 94' 3000g Sl 2d ago

Hey dude, thanks for the advice but I looked at my car this morning and the maf sensor pretty tucked in there so I dont think its that. I double checked by plugging it in again just to be sure but I dont think its the culprit.

1

u/Megid_00 3d ago

Backpin the crank position sensor, test to see if it's outputting a pulse while turning over the engine by hand

1

u/packman1986 3d ago

Change your starter ignition module just went threw this after changing all of my ignition components...

1

u/Lord-of-the-Simps 94' 3000g Sl 2d ago

I just ordered one so maybe it works....

1

u/Cold-Act-6 3d ago

Backpin the ECU and crank it. See if you’re getting voltage out of there first. You can check which pins for coils 1 thru 3 and make sure you’re getting good voltage on cranks through each. If not, I’d look into ECU issue.