Conversions & Swaps LSX Engines in Non-LSX Vehicles
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1996 firebird 3.8 ls swap , no fuel ,no spark gremlin

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Old 07-05-2022, 09:43 AM
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Default 1996 firebird 3.8 ls swap , no fuel ,no spark gremlin

i ls swapped my sons 80,000 mile 3.8 firebird .
, i used a 6 speed body harness , I bridged the clutch pedal switch and bypassed vats under the dash , engine turns over just fine , however , fuel pump doesnt come on . fuel pump is fine i used a separate relay and made a jumper to test the pump. what would cause the car still not to fire? ive checked all and i mean all grounds , all plugs , im really at a stand still . only thing i can think is the 6 speed harness doesnt have a loom to plug in to the auto shifter and some how not allowing signal , i dont know , ive done several ls swaps from lt1 to ls and into older cars but this has me frustrated . or is it something completely different
also when cranking motor , guages work but no rpm reading on tach , any help or suggestions ?


Old 07-14-2022, 11:40 AM
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I feel like I would test for 12v constant, and 12v ign at the ecm/fuse block.
Old 07-16-2022, 07:39 PM
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found broken wire where wire repaired . fuel pump primes when key is turned over now . i replaced cam, crank and map sensors . tested wires for continuity , im completely blown away at what is going on . all ignition and constant voltage to ecu are good



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