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Troubleshooting a dead fuel pump S70 1998

Horatio,

Since I'm not 100% sure that it is the fuel pump at this time my plan is as follows:

Tomorrow I'm going to take the original fuel pump relay to work and take it apart. I plan to look for cold solder joints and capacitors that are failing open.

Next I plan to rent a fuel pressure tester and hook it up to the fuel rail and start the car. I want to see what the pressure is and if it fluctuates at all. It it does, then I'm really leaning that the fuel pump is failing.

Finally, I plan to take the new fuel pump when it comes in and take it to work and find out how much current a brand new fuel pump is drawing. Then once the old is out and replaced I plan to take that one to work as well and measure its current draw and then compare the two. I also plan to measure the fuel pressure of the new one so that I can compare it to the old one.

If the problem persists after this, I've at least eliminated the fuel pump and now have a spare. I will have to investigate both fuel relays then so as to determine which one or both are causing the problem.

Don't worry, I'll keep everyone posted here. It might be sporadic, but I will post.

Matt






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New Car dies without notice... [S70][1998]
posted by  TheBrickTank  on Fri Oct 6 20:17 CST 2017 >


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