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Will not start after being parked for four months

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
It will tell you the wire, yes, but does not verify it can handle the load.

An 18 gauge wire has 10 strands, If 8 are broken, it will ohm out okay but when voltage is applied, the wire cannot handle the current flow.

The wire needs to be load tested either with a power probe or a load pro.

Roy
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Saturday, January 16th, 2021 AT 3:01 PM
Tiny
MARWEE
  • MEMBER
  • 25 POSTS
  • 1997 DODGE DAKOTA
  • 5.2L
  • V8
  • 2WD
  • AUTOMATIC
  • 170,000 MILES
The truck will not start after sitting 4 months.
I thought the fuel pump was out because it never ran with key on but I found no power to the fuel tank power connector when key is on. I checked and or replaced the fuel pump relay and checked the fuel pump fuse at the same location. The fuel gauge doesn't register. I have been told to check the wiring from tank to relay, it appears undamaged. I also can't get my OBD to read the ECM. Could it be the ECM? Where to go next other than a repair facility?
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Sunday, January 17th, 2021 AT 6:12 PM (Merged)
Tiny
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  • MECHANIC
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Good morning again.

Did you have the wiring load tested? I know we discussed this before. If you have power to the relay and it energizes, then it is between the relay and the pump.

https://www.2carpros.com/articles/how-to-check-wiring

Roy
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Sunday, January 17th, 2021 AT 6:12 PM (Merged)
Tiny
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  • MEMBER
  • 25 POSTS
I don't think I have the ability or equipment to load test the wiring.
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Sunday, January 17th, 2021 AT 6:12 PM (Merged)
Tiny
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  • MECHANIC
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You are going to need some help from someone who can do this test for you.

You could get a mobile mechanic to come to you to check the wiring.

Roy
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Sunday, January 17th, 2021 AT 6:12 PM (Merged)
Tiny
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  • MEMBER
  • 25 POSTS
Thanks, I wish I had taken it to the shop now. I find the thought that one wire in the harness, specifically the one wire the provides power to the pump is some how corroded or broke while parked is very disconcerting.
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Sunday, January 17th, 2021 AT 6:12 PM (Merged)
Tiny
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That is the reality of it. You cannot tell that from just looking at the harness without opening it up and inspecting it.

Roy
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Sunday, January 17th, 2021 AT 6:12 PM (Merged)
Tiny
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  • MEMBER
  • 25 POSTS
Well, I broke down and took it to the shop. They checked it out for 10 minutes and found the ECM was bad.
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Saturday, January 23rd, 2021 AT 5:31 AM
Tiny
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Does it run now?

Roy
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Saturday, January 23rd, 2021 AT 5:40 AM
Tiny
MARWEE
  • MEMBER
  • 25 POSTS
I have not picked it up so I personally have not witnessed it running.
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Saturday, January 23rd, 2021 AT 5:43 AM
Tiny
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Okay, glad it is fixed for you.

Roy
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Saturday, January 23rd, 2021 AT 5:46 AM

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