Fuel pump upgrade miata 99 05 how to the boosted miata gets a fuel pump upgrade.
Nb miata fuel pump relay.
How to diagnose remove and replace a bad fuel pump.
If it passes this test the fuel pump relay contacts and coil are working.
Red with blue stripe goes to the fuel pump.
The main relay powers your ecu and your ignition system amongst other things.
If it fails this test you probably have a bad fuel pump relay.
The car will be working fine then.
Lots of mis information about this dotted around the net.
And when they fail you re stuck.
This provides an end to end wiring solution that is designed for higher loads pulling power directly from the battery or kill switch and running it through 35a dedicated relay instead of the factory main and fuel pump relays.
It s not by in fuse box or anything on the nbfl it s under the steering column wheel.
There are 4 wires.
It s a mechanical relay and after a couple of decades they just get tired.
In this video i talk about the fuel system on the nb miata and install a.
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1991 mazda miata wiring diagram schematic www.
This kit was designed by our friends at trackspeed and is designed to bypass the fuel pump relay.
In this article we consider the second generation mazda mx 5 miata nb produced from 1998 to 2005.
Remove the jumper from the fp and gnd terminals of the diagnostic connector.
Typical failure is immediate.