My 88 isuzu trooper is not getting power to the fuel pump or the pump relay fuse but is getting power to the relay.What is the most likely cause?

fuel pump relay should be in the engine compartment on or near the fuse box

I would suspect either a bad plug- in at the pump or a bad power wire. Run a wire from the battery direct to the pump. If it runs, attach the wire under the hood to something that only has power with the key on and put an in-line fuse into it. Hope this helps.

CHECK FOR FUEL SOUND LIKE FUEL PUMP FAILED.BUT CHECK FUEL PUMP FUSE AND RELAY.

did that mean you had to replace the fuse because it was blown? If so the fuel pump or fuel pump relay may be bad. Check for tight connections-no corrosion- at the fuel pump and fuel pump ground.

Check the fuel pump relay and fuses it may not be getting power when you turn the key on.

start with pulling the fuel pump relay!!
this should kill the power to the pump and save your battery,
so well pulling the fuse but pull and test the relay,, it may have got to hot. if it checks good and clicks when you plug it back in!![key off]
then there is a short in the ignition to relay circuit

Check under your hood for a second fuse box.This box should contain fuses and relays.Some times the box lid will tell you whats what ie.horn relay,fuel pump relay,ect.Look to see for a relay for your sunroof.Your sun roof takes a lot of power to run and should be on a relay.Your light and clock be on the same relay.Good luck.

No replace both relays and see if you still have the problem if so you could have a bad ground wire.

no reset switch but a fuse and relay if they are ok possibly need to replace fuel pump
relay is under bonnet fuse from memory might be in cab

check fuel pressure, possible hole in fuel line in tank.
listen for spraying fuel while pump is running