i have a 98 f250 with 460 and i cant get it to start unless i prime it
have replaced filter and both pumps
Sounds like you blew a fuseable link.
a fuseable link. where
You'll need to google a wire schematic.
there is a wire that is laying by the coil that looks like it might have gone to a condenser but i have never had this engine before and not sure if it is suppose to have one
Check the schematic.
i only see 4 of them i will check and let you know what happens
sounds good.
Well I found the wire on the diagram. I have a Chilton book. It's white with light blue stripe. Coming out of the harness right next to the coil. It has a plug on it and the wire turns black. I'm not good at reading schematics but it looks like it ataches to the coil but I can't see where. I'm attaching a pic. I also checked the codes and it only shows a code for the get valve not seated. Code 32.
Forgot the pic
I don't think you have a spark issue because you said it will start if you prime it, You replaced the fuel pumps and filter, but do you have fuel? is the pump running? fuses, relays,fuseable links for fuel system power all checked?Grounds checked for fuel system?
Yes to all that. I am getting fuel to the rail. I have spark . I even bypassed the duel tank selector. Im gonna put more gas in the tank. I sure hope thats not the issue. But i have mdae sure fuel is flowing freely from tank to motor
OK,With you telling me that,yes put more fuel in your pressure maybe to low.
Ok. I put fuel in it. I. Checked both pumps verified fuel is running all the way to the rail. I have good pressure in the rail. Still nothing
Do you have power to the injectors? do you have pulse at the connectors?
I'm gonna check that next
Did you check or replace the PCM power relay?
Pcm relay and fuel pump relay appear to be working properly. I popped the tops off and made sure. I'm going to check to see if I'm getting power to the injectors in the morning
Ok. I finally got home. I went and purchased a good test light that shows pos and neg polarity. With the key ON all injectors have power to both wires. If I jump the selonoid to start the truck. The Orange wire shows a pulse. Is that right?. And the wire I showed you in the pic is a hot wire. I am ata complete loss.
Only one wire should be hot.
Ok... so what does that mean. Ecu?
Is the pcm coming out of the fire wall under the hood with 3-4 connectors going to it?
No. The relay is next to the fuel pump relay attached the air filter and I mean the electronic control module under the dash on driver side
other thing i forgot about is, did you ever check the fuel pump module that is mounted above the spare tire? Need to see if it's clam shelled.
Fuel pump module never heard of that but I will check it
May not be for that year.
You checked the inertia switch correct?
There's a red wire, negative side of battery, it's ground for the injectors and its a fuseable link.
No where is that located. Would that cause the what's going on with the injectors
That red wire fuesable link comes from the EEC relay.
Inertia switch is usually located under dash on passenger side,black vertical switch with a red button on top. Push that button and see if you hear a click. Do that first wait on the fueable link.
Ok. I will be home in about an hour and get on it right away. I have found a replacement computer for $40 just in case as well. It's salvage though
Let me know. Its hard to find a good schematic!
Only switch on passenger side
I found itd it driver side. It is not tripped
Ok,Did you look for that red wire from the EEC relay?
No red wire see pic no turtle shell looking anything wherr spare goes
Before we go any further I want to express my appreciation for your help. I have already learned alot and I'm confident that with your direction this truck will start. Thank you. .... now i think i found the ecc unit under the dash. There is a very distinctive red wire im gonna tryvto follow it. Im gonna verify first that what im looking at.
Anything with the relay?
No. I just got home from work. I'm gonna make time tomorrow afternoon to trace it down. I will let you know what I find
I found all the disable links. They appear to be ok. I'm gonna change the ecc unit. And control Modual
Ohm test the links if you can, they break internally. is the ECC just a relay?
From the schematics I can find,the injector grounds in the PCM. you said you had power on both wires at the injector correct? one wire should be hot the other ground. Well, let me know how it goes.
Ok what are the links suppose to be because it's hard to say whether they are blown or not. I have read the same thing about the injectors. Some sources say pcm others say ecc. I'm just gonna do both. As far as I can tell that's the end of the road. Next step is a gallon of fuel and a match.
Yes it's just a relay. Now the pcm is a black box under the dash. There is a silver box right in front of it. What is that
Yes power on both sides if injectors. One side will pulse when I engage starter
I feel the links are ok because you have power to everything,my issue was the power on both wires to injectors so i believe ground was lost,from the bullshit schematics I've found the injectors ground at the PCM, and the EEC could play apart, just thought that was worth looking into also. I'm not a big "replace the computer guy" they just don't go bad, it's usually an overlooked issue. Let me know how it goes.
Well you were right. Everything is in working order electricly. The injectors are bad. I had to have a mechanic come check it out. I have a new set on order and will let you know what happens
Good glad that was it,I hope the injectors are reasonable. Good job hanging in there.
