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No Start Problems

  #1  
Old 01-10-2019, 10:05 PM
Keegan Beardslee
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No Start Problems

Ok, so I have a 94 F150 with the 5.0. I just ended up replacing the brain, but now it won't start. It fires with a starter fluid shot, but wont stay running. What's up??
 
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Old 01-11-2019, 07:41 AM
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Fuel pump not priming? Bad new computer? Wrong computer? Why did you replace it and have you checked for codes?
 
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Old 01-11-2019, 08:27 AM
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I assume this is related to the PCM you were referring to in this thread: https://www.ford-trucks.com/forums/1...placement.html
 
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Old 01-11-2019, 01:09 PM
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Found this the other day.
troubleshooting guide
Good basic guide.
Has info that may help.

Randy
 
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Old 01-11-2019, 06:33 PM
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Have you checked inertia switch? i think thats how it spelled. anyway you might have accidentally tripped it and gas isn't flowing to the engine? do you hear the gas pump running?
 
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Old 01-11-2019, 06:50 PM
Keegan Beardslee
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I hear the pump run, I checked the inertia switch and it's good. I just put in an ecu and now it wont start...I put in a F4TF-AVA ecu. Guy said he pulled it from his 95 when he switched the motor and tranny. But it had the exact motor and tranny as mine. Does the 94s ecu need to be vin matched, or can it plug and play? Or is there something that could have fried itself when I reconnected the battery that would stop fuel from getting in?
 
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Old 01-11-2019, 07:02 PM
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hmm its possible the ECU is bad or Pin out might be different but i can't say for sure. IF all you have done is swap the ECU than i would lean towards the ECU being the issue but if you have made other changes I would make sure fuel is getting to the engine. sounds like its carb? i have a 5.0 fuel injected and i had a similar issue and that was because i had the spark plug wires in the wrong order.
 
  #8  
Old 01-11-2019, 07:12 PM
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Originally Posted by Keegan Beardslee View Post
.I put in a F4TF-AVA ecu. Guy said he pulled it from his 95 when he switched the motor and tranny.
F4TF-AVA is listed for a 1994 5L engine with a manual transmission. That makes it a Speed Density computer. It will not work in your truck.



Originally Posted by Keegan Beardslee View Post
Does the 94s ecu need to be vin matched, or can it plug and play?
No VIN matching for the PATS system, it did not exist. It can be plug-n-play based on other factors listed in your other thread.
 
  #9  
Old 01-11-2019, 07:19 PM
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Well ****. Thank you. I really appreciate it. Well that guy jipped me
 
  #10  
Old 01-12-2019, 08:55 AM
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Originally Posted by rla2005 View Post
F4TF-AVA is listed for a 1994 5L engine with a manual transmission. That makes it a Speed Density computer. It will not work in your truck .
Isn't his 94 speed density?
 
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Old 01-12-2019, 09:05 AM
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Originally Posted by '89F2urd View Post
Isn't his 94 speed density?
According to his previous thread, his catch code is HUG0, F4TF-12650-AAA, which rla2005 noted as MAF.
The one his received is for SD.
 
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Old 01-12-2019, 12:21 PM
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I donít see where he said it but I got the impression he has an E4OD?
 
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Old 01-12-2019, 01:46 PM
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Oh, right. This is one of those "On my other thread...." threads.
 
  #14  
Old 01-12-2019, 07:15 PM
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Originally Posted by '89F2urd View Post
Oh, right. This is one of those "On my other thread...." threads.


I started another thread because Iím still having the same problem.
 


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