Well it is not that then.

Did you try to run it with the wire off the starter relay yet?
Sorry I called it a stater solenoid above and you have the relay instead on the fender.

 

Reporting in...

First i replaced my spark plugs and gave it a try to start it up. Acted like it wanted to fire up, but no go.

Second, i tried starting with the wire off the relay, and putting power to that post, didn't even act like it wanted to start.

Third, I cut the #8 Wire and same ole thing.. Pumps stay running, and don't act like it wants to fire up.

I tried starting it with the fuse out, but i either didn't try enough or it just was not gonna happen. Darn Truck... LOL

Hurricane IKE is suppose to hit just east of here tomorrow evening, and we have a 10AM curfew so Orielly's will be closed. I guess it will be Monday or later before i can get my new truck computer. I am hopeing that the computer is the problem at this point, because i cant imagine what else it will be..

Thanks again for all your help so far
Joey

 

You have said a lot of things that we have taken as good in this problem and maybe we should not have.

1. Is the computer in or out when you are trying to start it now?
In I hope and plugged in.

2. You said you had good fuel pressure, how did you know that?
Did you use a gauge with pin #6 of the DLC grounded?
If so what was the reading?

3. You have not said much about spark, did you check it when it would not start?
You should have good spark even with the computer out.

4. If you have good spark then your injectors are not firing with the computer in or it would try to start.
Have you checked the injectors to see if they were firing when it would not start?
One pin of all the injectors should have power on it all the time the key is on.
The other side and common to four injectors should pulse as you crank it.

5. We could also have other problems like the timing chain could have jumped timing on you.

6. When you pulled the fuse are you sure that it was the fuel pump fuse?

The bottom line is if we get the wrong information from you it impossible to help you.
You may have a bad computer as the fuel pumps running all the time with the engine not running is a bad computer most of the time. The way we read this thread it could have something else that was keeping the fuel pumps on.
Do the fuel pumps run with the computer out when you turn on the key?

Well I hope you have the truck on high ground and you get out of there OK and we will get back with you when this storm is over with.

 

1. The computer is in and back to its factory position, and connected.

2. The shop that i brought it to said they checked the pressure of the fuel and it tested good.

3. Yes, i pulled a plug and made sure i have good spark. It shocked the tar out of me :P

4. I have not checked the injectors, not sure on how to test this.

5. I have a friend that knows how to check the timing, i will have him check it out.

6. Yes, i verified it was the fuel pump fuse in my repair manuel.

The bottom line is if we get the wrong information from you it impossible to help you.
You may have a bad computer as the fuel pumps running all the time with the engine not running is a bad computer most of the time. The way we read this thread it could have something else that was keeping the fuel pumps on.

Nope, fuel pump does not run if the computer is disconnected and the key on.


Well I hope you have the truck on high ground and you get out of there OK and we will get back with you when this storm is over with.

Thank you agian for all your help.

 

I would say then you do have a bad computer.
I try getting one even if is not the right one if you need move it.
Even if you have to get one from a friend.
Get one from a 302, 351 or 460 with your type of transmission and from a 1988-1993.
It may not run well but you should be able to move it.

 

Hi Subford, i am sorry i been away so long but the storm put my truck on hold. But i am back at it now.
I changed the computer and it started right up like nothing was wrong. BUT, ha ha always a but... Drove it down the road and it lost power (rpms would go up, but had no power to move) so i had it towed back to the house. Checked my oil and had a bit of gas in my oil. hmmm dunno what would cause this. So i changed my oil and could not start it back up. Seems like when i try and start it, i hear a light grind sound.. Though it might be my timing chain, so bought a new timing chain and installed it. In the process of putting it all back together now. Any idea how gas would get in the oil and a total loss of power?? .. Thanks bud..
Joey

 

hay there jwracca, i was readin your thread cause my 93 f150 351w is havin the same problem. you get er runnin again?
the fuel in your oil sounds like a stuck injector. had the same problem with an army detroit diesel engine. corse big diff between a diesel and a gasser.

 

The gas in the oil was from all the failed attempts to start and the pumps running all the time.

 

i could understand the faild crank attempts but that would have to be hours worth to cause that much fuel to seep past the rings into the oil pan. even with the pumps runnin constantly with koeo the injectores dont open up, it just primes the fuel rail.

 

THe computer was bad, who know what all was going on. Also as the injectors age they tend to leak. During the attempts to start it it was flooding out and this is what causes the fuel in the oil. That's why it would start when the fuel pumps were out of the equation. It was overfueled.

 

ah... true, true. do you have any idea what would cause the no power issue and grindin noise?

 

I didnt read all this but I had a eec power relay that had resistance and was only putting out 5-6 volts to the fuel pump relay. It made the pump run whenever the key was on, but shut it off (as well as power to the injectors, coil...) when you cranked the engine.

 

I know this is an old post, but my 1993 F350 7.5 5 spd has a similar issue.
It keeps poping the ECM Maxi fuse under the hood.

Ran fine then just quit, any pointers on testign the ECM?
Is it on the drivers side kick panel?

 

What are you calling the ECM Maxi fuse under the hood.
The PCM POWER RELAY fuse (fuse "I")?



/

 

yes fuse I, breaks open as soon as you turn key to on.
I replaced the bosch relay for "PCM relay power" today.
Also had TFI module tested by pro machine at Advance.