TwinTurbo.NET: Nissan 300ZX forum - A relay wouldnt help you
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Subject A relay wouldnt help you
     
Posted by -Grimm- on August 12, 2015 at 1:40 PM
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In Reply To Fpcm bypass maybe ?? posted by jazpafresh on August 11, 2015 at 12:42 PM
     
Message if the FPCM was on/off signal, and the drive transistors were breaking down maybe, but our FPCM sends a pulsed signal much faster than a relay would be able to respond (and the cycles would kill the relay quickly)

Your best bet is to buy a new FPCM, or the Ash dual pump controller as you mentioned Here if you have the time to wait ;) or Z1 if they have stock.

9 psi is far too low for the secondary fuel pump to turn on, we have about 40psi at idle and more when running high.

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1992 300ZX NA 5 Sp (Dead)
1990 300ZX NA Auto 2+2 (Dead)
1990 300ZX TT 5 Sp (Stock Turbos) (Est. 400 HP)
1990 300ZX TT 5 Sp (GT600R) (Est. 600 HP)
2004 G35 Sport 6MT (DD)
2008 Honda Civic (DD)
1969 Chevy C10 (Toy)
1969 Chevelle (Toy)

     
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