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Posted

hi,im new to this forum,actually ive never used a forum before but being a new joyner owner and already needing some help,here i am.ive got a 08 trooper 1100 and have lost power to the fuel pump and fan.i can activate the relay manually and get them to come on.i just read a post here before i registered from someone with the same problem.any ideas???

Posted

Yes I had the same thing happen to me it was the fuse box the wire in the back of the fuse box melted.I took the fuse box off and rewire it real easy

Posted

You may need to pull the fuse/relay holder and see if the wires have gotten hot and corroded of discolored the connections which would indicate the need to replace some of the wiring. If your into or know some one who is, you may want to replace the relays with P channel FETs that are hard wired it and not plugged into a connector. The fan is powered up with one relay and the fuel pump with another, so your problem is probably that is common to both. Take a look at the parts and pieces thread and down load the schematic.

Kinarfi

  • 5 months later...
Posted

You may need to pull the fuse/relay holder and see if the wires have gotten hot and corroded of discolored the connections which would indicate the need to replace some of the wiring. If your into or know some one who is, you may want to replace the relays with P channel FETs that are hard wired it and not plugged into a connector. The fan is powered up with one relay and the fuel pump with another, so your problem is probably that is common to both. Take a look at the parts and pieces thread and down load the schematic.

Kinarfi

I just read this and wanted to know what is a P channel FET and where can I get them. Maybe this will correct my surge problem in my T2. I have already direct wired my fan because it melted the connector and wires, possibly there is a vibration causing the ECM relay to jump. I will try just about anything to fix the problem.

Posted

I just read this and wanted to know what is a P channel FET and where can I get them. Maybe this will correct my surge problem in my T2. I have already direct wired my fan because it melted the connector and wires, possibly there is a vibration causing the ECM relay to jump. I will try just about anything to fix the problem.

Google "P Channel Mosfet" and take a look at images, that's what they look like, just a power transistor. They work just like a relay if wired correctly and need to be mounted to a heat sink just for safety sake so they don't fry during turn off and turn on. To turn them on though, you tie the gate to ground instead supplying power like you do for the coil of a relay to turn them on, so to replace the relay, you need a PFET and an NFET or NPN transistor to invert the turn on voltage and ground the gate. The nice thing is that there is no plug ins, it's direct wired so they don't corrode and heat and the IRF4905 can handle 50 amps safely. I serious doubt that it will help with your surge problem unless maybe your losing power to you fuel pump momentarily, but you said it's already hard wired. If you really want to replace the relays with FETs, let me know and put it together for you for costs.

kinarfi

Posted

Google "P Channel Mosfet" and take a look at images, that's what they look like, just a power transistor. They work just like a relay if wired correctly and need to be mounted to a heat sink just for safety sake so they don't fry during turn off and turn on. To turn them on though, you tie the gate to ground instead supplying power like you do for the coil of a relay to turn them on, so to replace the relay, you need a PFET and an NFET or NPN transistor to invert the turn on voltage and ground the gate. The nice thing is that there is no plug ins, it's direct wired so they don't corrode and heat and the IRF4905 can handle 50 amps safely. I serious doubt that it will help with your surge problem unless maybe your losing power to you fuel pump momentarily, but you said it's already hard wired. If you really want to replace the relays with FETs, let me know and put it together for you for costs.

kinarfi

If you dought it would help then I'll bypass this fix. thanks anyhow

Posted

If you dought it would help then I'll bypass this fix. thanks anyhow

I reread your posts and you said you direct wired your fan, what about the fuel pump, have you direct wired it also? It may be in the process of melting the same as the fan. I have never been a big fan of push in fuses, they don't have enough contact area and if they get hot, they lose the contact pressure and get hotter yet and it keeps going until melt down and I think the fuse blocks in our rigs suffer from that. Just about every one has had a fuse or relay socket melt. That's why you need to pull and reinsert them from time to time, to knock of any accumulated dirt or corrosion, IMHO.

Kinarfi

  • 2 weeks later...
Posted

i found transister type relays at auto parts store. good for 30amps replaced all the relays with them and everything is working good. no heat up that i can find anywhere, and they only cost $8.00 apiece.

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