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Originally Posted by mooky9669
Thanks for the info...actually it's a 420 SEL..typed 450 by mistake. Think we found the fuel pump relay. Another quick question....This model has 2 fuel pumps and I was wondering, do they go out at the same time???
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They should have roughly the same wear.
Is one getting warmer than the other? Maybe that one is at fault. Can you measure the current draw of each pump? I would think the bad one will be drawing a lot more current. However, a true test would be to swap there positions and re-test.