

| Subject: | Curious incident of the fuel pump that did not whine in the night |
| From: | Don Spence |
| Date: | Tue, 31 Jul 2007 22:50:17 -0600 |
In the engine compartment, drivers sidewal is a black case with yellow warning stickers. Lift the lid and you'll find two identical relays. The one on the right (closest to vehicle centre) is the fuel pump relay. Swap the two relays. If the pump runs it is the relay. If not, if you have a VOM, test that there is power between the top and bottom slots of the right relay socket. If you run a lead from top to bottom the pump is powered. If it does not run it is the pump or pump wiring. If no go, leave the lead in place and check to see if power is getting to the pump connection. If yes, remove the lead and connect your meter to the left and right slots and have someone turn on the key to ignition. You should have power for a second or three. Try again, cranking this time. Again you should have power between left and right. If no you have a wiring or an ignition switch problem. If yes to all the above I'd say it's the pump.
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