I just bought a second 1988 ford ranger XLT 2.9L automatic transmission
It does not get power to the fuel pump and the relay is not burnt and just put a new fuel pump in the inertia switch is not tripped and so I am out of ideas please help

 

Welcome to the forum

Just as a heads up, the fuel pumps only get 12volts for 2 SECONDS when key is turned from OFF to ON, its a safety thing, only after engine starts(above 400rpm) will the pumps get full time 12volts
You can turn key off and on as many times as you want to test for that 12volts but as said its only there for 2 seconds each time

Fuel pump(FP) relay usually has a Green Base, EEC relay a Brown base

Pull the FP relay out, slots in the base should look like this: https://www.gtsparkplugs.com/images/...lay-wiring.jpg
(87a may or may not be there doesn't matter in this setup)

Key OFF
Test slots 30 and 87 for 12volts, battery volts, test light or volt meter
If one has 12volts then the Fusible Link is OK, if no 12v then fusible link is bad, its on the Starter relay post with the Battery Positive cable

If 30 or 87 has 12v then use a jumper wire in the slots and connect 30 and 87 together, you should now have 12volts at the fuel pumps if inertia switch is OK

1988 has 2 pumps, low pressure pump in the gas tank and a high pressure pump in the frame rail by the fuel filter
The 12v wire from inertia switch runs to the frame rail pump and there is a splice there where the 12v wire splits to also go to the pump in the gas tank


If pumps both work with Jumper wire in place you can start the engine if you want, just to test
Key off
Pull jumper out and put relay back in
Turn key on and listen, should hear 2 relays "click"(EEC and FP relays) and then hear the pumps run for 2 seconds