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LH2.4 activates the fuel pumps for a second or two even if you just turn the key to on. On an '89, the telltale is no pumps running. If you kneel on the ground by your driver's door and hit the key, you should hear the main pump easily.
If you don't, first thing to do is pull the felt under the dash on the passenger side. When you key the ignition, you should hear the relay click in. If it doesn't, get a meter and check for power and ground at the relay. This is what Dan was talking about. The ECU completes the circuit to the relay. If you have power and ground when you hit the key, the relay may be bad, which is a quick fix.
If you determine that the relay is working, check the main fuse in the engine bay to make sure you have power going to the relay for the pumps (large, red wire). Check the plug at the relay and make sure you have power at the heavy wire there too. Next step is to check for power out of the relay. That should be the yellow/re wire, or the heaviest one (I'm pretty sure it's YR) that goes to the fuse panel. When the relay closes it powers that fuse. If the circuits are sound and the relay is good, but no pumps, your problem may be a dead main pump.
I have seen two 89s over the years that have the fuel pump relay rewired rather than replace the ECU circuit.
If it's an '89 pink label, I'll bet it's the ECU. I believe it's a power transistor in the ECU that dies.
DS
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