Please help me

[ashraf]

Hello everybody. I am new to this forum. I am here because I have a problem that is driving me crazy. I owne an F450 Powerstroke. the problem started when I had a freind install new lights on the bed. I think that he caused a short somewhere. I am not getting any juice to the plug to the injectors. I bought a new celinoid and new IDM and I am still not getting any power to the plugs. I am not too sure about the wiring to the celinoid because it has 4 wires. two thick and two skinny. also the place where I bought the new idm said that the number that is on it does not matter and he gave me one that has 120V and mine was 100V with different numbers ans letters.
Please let me know or give me any tip that you might know. thank you

[ABOBB]

Welcome to Powerstroke.org

I can't answer any of your questions, but give it a little time, and you're sure to get lots of good help.

[Raul@Stealth Automotive]

not sure about your problem but you might want to add some more info like what year is it and what type of engine you got.... just so that you get a faster response....

-Raul

[ashraf]

it is a ford F450 7.3L Turbo diesel. it is a rollback. truck ran just fine until we messed with new lights on the bed. it seemed that we burnt the celinoid that mounts on top of the engine but I had that replaced. ( I am not sure about the wires. I get one always + and another tiny one + when ignition is on. The other two stay -) maybe the wiring is wrong. I thought it is the IDM and I put a new one with the same wiring on the celinoid but still no fire in the plugs that go to the injectors.

[popsmick12]

What year is the truck??
Sounds like you are talking about the glow plug relay on top of the engine.

[ashraf]

truck is 1995 model

[popsmick12]

The solenoid you are referring to is the glow plug relay. Info below quoted from John-G at The Diesel Garage.

The most common causes for hard starting relating the the GP system are: Bad (worn out) Glow Plug relay, and bad connections to the GPs at the "UVC" (Under Valve Cover) harness.

With the Wait To Start light ON, check the battery voltage at BOTH large terminals of the GPR (Glow Plug Relay), they MUST be the same measured to BATTERY GROUND, or at least within 1/2 volt of each other. Again, with the WTS light on.

If they are not the same voltage, then make sure the GPR is actually working. With the WTS light on, there should be battery voltage on one of the small terminals of the GPR, and ground on the other. If this is true, the GPR is bad. Replace and re-test.

[ashraf]

thanks. I will try that.

[ashraf]

Ok. So I checked the voltage and it is fine. the solenoid has 4 poles. Terminal B for Battery, M for stater motor, S for ingnition switch, and I for coil lead. I know I should have power on terminal B and S when ignition is on. M should have power when stating the engine. I am not getting any power when starting on terminal M. therfore, the injectors are not getting any power when the engine turns. I am clueless here on what to do.

[popsmick12]

I am somewhat confused. Unless the 95 is very different than my 97. My starter solenoid is on the passenger side inner fender and has 3 terminals, two large and one small. I then have a glow plug relay with 4 termnals on top of the engine next to the fuel filter canister which is what you were referring to earlier. Neither of mine have letters on them. To my knowledege there is no coil on a powerstroke. You may want to check the power supply to your IDM. with key off remove the wire harness to your IDM. With key on check voltage between the two large wires I believe they are black and green. Should be 12 volts. Make sure key is off to reinstall IDM. Maybe someone else can chime in with some help.