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So. Not sure how many of you have seen my other thread but I got my rig running after replacing the glow plugs. Fired up instantly after sitting for a month with fresh glow plugs. The second time I started it I let it idle and warm up a bit. As I was picking up my tools I heard a pop from under the truck. Made me worry but I drove it a few feet from where it had died and shut it down. Charged the batteries all day and then went out tonight to move it again. Turn the key and don't get a damn thing. Although (and I will have to double check tomorow) I believe I heard a click from the relay when i turned the key. The starter doesn't crank at all.
So I'm hoping I just blew the solenoid. Is that a fair bet?
I jumped the switch on the solenoid and found out that isnt the issue. But I think I realized what it was. I seem to have accidently activated the alarm and I'm guessing that has disconnected the ignition wire to the starter. Anyone know anything about car alarms? I've never had a rig with one and this one was installed by the previous owner and I dont even know how to disable it!
My first line of attack would be to find out what kind it is.
Then try to find a local distributor or an online source of information for the brand and model you have.
Some of them can be rather complex, wires are cut and routed through the alarm box then back to where they are supposed to go.
If you jumped the fender mounted starter solenoid, the wire only goes one place.
That is down to the starter mounted solenoid.
I was having similar problems in my 92 f250. I was going through Glow plugs and even controller units far too often. After quite a bit of research it was decided to put in a new grounding strap to the firewall. It seems to have solved a multitude of issues....
That is a good idea. I should do that just for redundancy if nothing else. As it turned out I got my rig running again. Not even entirely sure what was causing my problem. I'm suspecting the alarm but I don't know for sure.
On a side note does anyone know what the second relay on the drivers side fender does? I replaced my glow plug relay and wired in a manual switch. Then when diagnosing my most recent issue I noticed that I have a lead from that second relay that I didn't reattach to the glow plug relay. But my truck runs fine so I don't know what that other one is for. It's right next to the glow plug relay towards the passenger side on an 85 E350.
Well the one for the starter is on the passenger side. The one I'm wondering about looks identical but is right next to the one for the glow plug relay. I know the one on the passenger side is for the starter because I jumped across it to kick the starter over when I was diagnosing my electrical issue.
Look at the ignition switch wiring harness near the steering shaft or under the hood for where they (car alarm installer) spliced into the starter wiring as they most often split the wire and run the bypass right from there (obvious and easy to repair) and all I did was shove a push pin to connect them.
The worst one I had was a Chevy pickup that was set up so that it got the starter power supply from the head light high beams (needed to be turned on) that supplied it to the starter wiring, which also needed a special electronic "KEY" incerted to complete the circuit to the starter to get the starter to work.
I gave up and jumped the purple wire in the harness that the water temp wire came out of to the battery.
I left his steering wheel club on the porch!
Last edited by archangel; Jun 6, 2007 at 10:18 PM.