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Old 12-10-2010
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Join Date: Oct 2010
Location: liv, mi
Posts: 1
93 Ranger Power problems

My Engine hesitates going over bumps, it seems electrical. So I opened the hood and tried checking all the grounds, plug wires, etc. Nothing seemed to give any problems So I then tap lightly on the power distribution box, and everytime I tap it, the engine starts to stall, just like when going over bumps.

Just a couple relays in there, as well as a few fuses. Any idea how to proceed? Shouild I just start replacing relays? Look for a replacement box at the junk yard?
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Old 12-10-2010
Join Date: Nov 2005
Location: Elizabeth City, NC
Posts: 767
I'd do a lot of inspecting and wiggling, while it's running (or use a test light to see when the power flickers).

This could be a simple as a bad contact for the PCM or FP relay, bad feed wire/terminal to the box, bad relay itself, etc.

I'd suggest pulling the PCM Power Diode and checking its contacts too. I've heard of them coming loose.
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