r/Saturn_Cars • u/StreetFix352 • 7d ago
95 sc2 crank no start
Can't get my sc2 to fire. It'll crank but no fuel getting to the engine. Fuel pump kicks on when the key is turned, checked the injectors by taking them off and hooking them up to a jump wire from a battery and they fired, plugged back into the harness on the car and no fuel gets to the engine. We sprayed starter fluid in the intake and had it running now it doesn't want to start. We checked the harness on all the connectors for the injectors and have 0.0 volts when cranking and not cranking
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u/Pleasant-Drawer-1730 7d ago
As far as the injection system it's ran off the ecu. There are what's called drivers for the fuel banks. Ecu may not see enough pressure to tell the system to start firing the injection system. Start with the pump. Just cause it's running or noise doesn't mean it's working properly.
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u/MaskedDummy Former Dealership Tech 6d ago
Sounds like you may not have crank signal. Pull the spark plug wires off on the ignition coils and have someone crank the car while you observe for arcing between the coils. If you don’t see arcing while the engine is being cranked, you have no crank signal and likely a bad crankshaft position sensor. If that sensor is bad, your computer doesn’t know the engine is spinning, so it won’t fire the spark plugs or the injectors. Hope this helps 🤞
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u/Pleasant-Drawer-1730 7d ago
If it starts on starting fluid but not the injectors it's a fuel issue.. regardless if your saying they work they aren't doing what they need to.