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88 to 89 fuel pump, will it work? why not!

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Old 08-04-06, 04:47 PM
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88 to 89 fuel pump, will it work? why not!
mazdatrix sells to fuel pumps for the 86-88 and 89-91, s4 and s5 respectively. but why cant i use my 88 fuel pump in my 90 vert, it looks about the same, and if it will work with a little ingenuity, let me know before i buy a new pump please, thanks yall!
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Old 08-17-06, 11:10 PM
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i think all 2nd gen fuel pumps are swapable and i know you can put FD pumps in FCs
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Old 08-18-06, 07:31 AM
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I think the wiring is different. The S4 has 12v at all times while the S5 has alternating voltage. Now whether it will work or not, I don't know.

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Old 08-18-06, 09:04 AM
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Engine, Not Motor

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I believe the pump itself is the same. Just two wires...

For the record, almost all in-tank EFI pumps of the era are similar.
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