Toskin
New Member
- Joined
- Jul 5, 2022
- Messages
- 12
- Reaction score
- 3
- Points
- 3
- Location
- Abbotsford BC, Canada
- Vehicle Year
- 1988
- Make / Model
- Ford ranger
- Transmission
- Manual
Hey guys new to the forum, hoping I might be able to get some help with my crank no start problem.. I’ll start from the beginning..
i have a 1988 Ranger, 2.9L v6 with manual transmission. I initially had a crank so start problem, wasn’t getting fuel. I had tracked it down to being a loose wire going into the plug at the EEC relay causing the fuel pump relay to not fire. I got the plug fixed cleaned up all my wires and truck was running great.
One day, I fired the truck up to let it warm up. Left for 5 min, came back and it was off. I’ve tracked it down to now I’m not getting spark from the coil.
I did some tests at the ICM plug on the backside of the distributor, i probed the #4 wire with my ignition on to test the positive lead. I’m getting 12V. So then I did the same test at the #6 wire which is ground. Probed the wire with ignition on and I’m reading 4.09V. I tore the whole harness apart and found that the wire runs inside of what I think is some sort of insulated tin foil? With 3 other wires from the icm, which are also wrapped in a bare wire. I followed the insulated line all the way back to inside the cab next to my ECM. The ground wire and that bare wire both end up in the cab by the ECM. The bare wire ties into the ring terminal with the ground cable. I cleaned up where It grounds out inside the cab. And probed the wire closer to the battery near my eec relay. And I’m still reading 4.09V
I’m wondering if I’m okay to run a new wire 3” or so from the ICM plug straight to my battery or to a good ground inside the engine bay? And how crucial is that bare wire? The bare wire doesn’t connect to anything near the ICM plug, just cuts off where the insulation stops. It doesn’t appear that there is any other grounds that tie in with the one from the ICM that goes to inside the firewall.
I’m not the greatest with wiring, trying to wrap my head around it. Thanks in advance to anyone that is able to give me some advice or guidance. Owned this truck for far too long with it only running for like a year and a half collectively for me lol.
Thanks again, Justin
i have a 1988 Ranger, 2.9L v6 with manual transmission. I initially had a crank so start problem, wasn’t getting fuel. I had tracked it down to being a loose wire going into the plug at the EEC relay causing the fuel pump relay to not fire. I got the plug fixed cleaned up all my wires and truck was running great.
One day, I fired the truck up to let it warm up. Left for 5 min, came back and it was off. I’ve tracked it down to now I’m not getting spark from the coil.
I did some tests at the ICM plug on the backside of the distributor, i probed the #4 wire with my ignition on to test the positive lead. I’m getting 12V. So then I did the same test at the #6 wire which is ground. Probed the wire with ignition on and I’m reading 4.09V. I tore the whole harness apart and found that the wire runs inside of what I think is some sort of insulated tin foil? With 3 other wires from the icm, which are also wrapped in a bare wire. I followed the insulated line all the way back to inside the cab next to my ECM. The ground wire and that bare wire both end up in the cab by the ECM. The bare wire ties into the ring terminal with the ground cable. I cleaned up where It grounds out inside the cab. And probed the wire closer to the battery near my eec relay. And I’m still reading 4.09V
I’m wondering if I’m okay to run a new wire 3” or so from the ICM plug straight to my battery or to a good ground inside the engine bay? And how crucial is that bare wire? The bare wire doesn’t connect to anything near the ICM plug, just cuts off where the insulation stops. It doesn’t appear that there is any other grounds that tie in with the one from the ICM that goes to inside the firewall.
I’m not the greatest with wiring, trying to wrap my head around it. Thanks in advance to anyone that is able to give me some advice or guidance. Owned this truck for far too long with it only running for like a year and a half collectively for me lol.
Thanks again, Justin
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