No Start Problems

Reply Subscribe

Thread Tools

Search this Thread

Jan 10, 2019 | 09:05 PM

Keegan Beardslee

Thread Starter

New User

Joined: Nov 2018

Posts: 21

Likes: 0

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??

Jan 11, 2019 | 06:41 AM

My4Fordtrucks

Hotshot

Joined: Jun 2015

Posts: 12,878

Likes: 2,446

Fuel pump not priming? Bad new computer? Wrong computer? Why did you replace it and have you checked for codes?

Jan 11, 2019 | 07:27 AM

rla2005

Fleet Owner

Joined: Oct 2005

Posts: 20,789

Likes: 1,753

From: Kentucky

I assume this is related to the PCM you were referring to in this thread: https://www.ford-trucks.com/forums/1...placement.html

Jan 11, 2019 | 12:09 PM

rdayt

Freshman User

Joined: Nov 2018

Posts: 35

Likes: 0

Found this the other day.
troubleshooting guide
Good basic guide.
Has info that may help.

Randy

Jan 11, 2019 | 05:33 PM

datree

5th Wheeling

Joined: Oct 2018

Posts: 30

Likes: 0

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?

Jan 11, 2019 | 05:50 PM

Keegan Beardslee

Thread Starter

New User

Joined: Nov 2018

Posts: 21

Likes: 0

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?

Jan 11, 2019 | 06:02 PM

datree

5th Wheeling

Joined: Oct 2018

Posts: 30

Likes: 0

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.