antbar, you really are digging up the old threads, aren't you?

Read the replies to the original post in this thread. You really don't need the high volume pump unless you're a suspenders and a belt type. Art mentions the Delco pump. ipd sells this as do others, probably for less money. I also like the Airtex tank pump. Stay away from their main pumps, though.

To test one or the other or both pumps

(for cars with 16 fuses)

For cars '79 - '84 pull fuse 5 and get power from any "always hot" fuse 6 thru 10

For cars '85 & later pull fuse 4 and get power from any "always hot" fuse 6 thru 10.

Keep the ignition off, take the key out of the switch.

Pull either fuse 4 or 5 according to the year (see above). This is the tank pump fuse.

Now you need to power the pumps. Connect a jumper wire from any hot fuse (see above) and put the other end to the left prong of the tank pump fuse slot. This will cause the main pump to run. You will hear it. It sounds like an electric drill.

Take the same jumper wire and put it to the right prong of the tank pump fuse slot. This will run the tank pump. In a quiet environment you should be able to hear it. It should emit a high pitched whine. In a noisy environment you may not be able to hear it unless you go to the back of the car. In some cases you may have to remove the gas cap and listen at the filler neck. The reason for this is that tank pumps seem to run quieter over time. Unless of course you buy a really cheap aftermarket brand that conks out after about two weeks. Then you won't hear it at all.

Given both pumps are working, you may want to run them both at the same time to test line pressure. To do this, don't remove the tank pump fuse. Just jumper the hot fuse to either side of the tank pump fuse and both pumps will run. Remember, ignition off and key out of switch.



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'80 DL 2 door, '89 DL Wagon