TwinTurbo.NET: Nissan 300ZX forum - Update: Z Cranks but doesn't start
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Subject Update: Z Cranks but doesn't start
     
Posted by Poppe on July 29, 2011 at 11:45 AM
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Message Original post here: La-Z-Link

Short story:
TT swap. Hooked everything back up (TT fuel pump) and car just cranks, but won't start. The ECU had a constant light and kicked on the Aux Fan - tells me it's a bad ECU. Also, has 2 year old gas in the tank. Verified spark, fuel pressure, injectors.

Got a new known good ECU.

Drained out as much bad gas as I could and added 2 gallons of 93 octane. There's probably 4 gallons of total gas left (didn't have enough gas cans - 2 fresh and 2 old).

Put the chip into the new ECU and the red LED stays on when the key is on. I think I've now narrowed it down to a bad chip. The harness is brand new, but I don't think there's anything in the harness that could cause this, is there?

Any other advice?

     
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