64cent

i just put a motor in my 1994 nissan altima. the old motor was running it just needed a oil pump. the new motor came from a junk yard, i heard it running while it was in the car. i put the new motor in and it just spins over. i have no spark but juice is going into the coil and distributor. the ecu is spitting out code 21 please help me my girlfriend is going to kill me if i don't get this car runing.

 

Asleep

code 21 is a no ignition code. you can get this from disconnecting your ignition coil and attempting to start the engine. is the coil and distributor from the old engine?

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64cent

yes. i have the old and new coil and distributor.

Asleep

check all major fuses in the engine compartment. did you do a compression test on the newer engine?

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64cent

No. The new engine runs, the owner of the junkyard let me test drive the car.

 

KA24Tech

What year is the engine? Also did you use the original ECU and harness from the 94?

Troy

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1992 S13 240SX SE Fastback KA24DE 5 spd - Type X Aero & Seibon Carbon Hood & Hatch -soon GT28RS
1993 U13 Altima SE KA24DET 5 spd w/ Nismo LSD - A high hp FWD can be fun (GT30R Turbo inside)
1990 Z32 300ZX VG30DETT 5 spd - 600HP & Very Civilized (working on twin GT28RS turbos)
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jserrano

Possibly a missing camshaft signal off the distributor or a problem with the power transistor.