I got everything done on my 351W-EFI conversion and went to start it today and I have no spark. I've got a wire crossed and hope someone can help tell me which one so I don't have to take this thing completely apart.
It's a 96 van 351W with the harness converted to 94-95 Mustang running a 94 Stang ECM TM04 chipped and tuned by "THE MAN" EFI_GUY
Fuel pump cycles fine and I can hear the gas trickle in the tank from the return. No codes from the ECM (111 system check OK).
Engine spins fine. Compression verified. Timing set a 0 for initial startup.
Tracked it down to no spark. Injectors are not firing either which I assume is due to the spark issue. Pulled plug and verified no spark when cranking. Plugs are dry. No smell of gas.
The remote TFI is a black module (from the van).
Wire colors are:
Black/white (ground)
Tan/Yellow (to neg side of coil and to tach)
Red/Green
White/pink
Pink
Gray/Orange
At the TFI connector, with TFI unplugged, and connector plugged in at the coil I have 12V to
Red/Green
Tan/Yellow
With the TFI plugged in, I have 12v on both sides of the coil (Red/Green and Tan/Yellow)
If I unplug the coil connector I only have 12v on the Red/Green wire
When cranking the engine, Nothing changes. 12V is constant on both wires. I used a test light on the neg side of the coil (light was on) and cranked the engine over and the light didn't flicker as I expected it to.
If I ground the Gray/Orange wire the fuel pump cycles.
I think I have a wire crossed or maybe a ground issue?
As I've been reading shouldn't the TFI get 12v when cranking (key in the start position to tell it to "start"? Which wire on the TFI should get this "push"?
Any suggestions and help I'm all ears.
Tim
It's a 96 van 351W with the harness converted to 94-95 Mustang running a 94 Stang ECM TM04 chipped and tuned by "THE MAN" EFI_GUY
Fuel pump cycles fine and I can hear the gas trickle in the tank from the return. No codes from the ECM (111 system check OK).
Engine spins fine. Compression verified. Timing set a 0 for initial startup.
Tracked it down to no spark. Injectors are not firing either which I assume is due to the spark issue. Pulled plug and verified no spark when cranking. Plugs are dry. No smell of gas.
The remote TFI is a black module (from the van).
Wire colors are:
Black/white (ground)
Tan/Yellow (to neg side of coil and to tach)
Red/Green
White/pink
Pink
Gray/Orange
At the TFI connector, with TFI unplugged, and connector plugged in at the coil I have 12V to
Red/Green
Tan/Yellow
With the TFI plugged in, I have 12v on both sides of the coil (Red/Green and Tan/Yellow)
If I unplug the coil connector I only have 12v on the Red/Green wire
When cranking the engine, Nothing changes. 12V is constant on both wires. I used a test light on the neg side of the coil (light was on) and cranked the engine over and the light didn't flicker as I expected it to.
If I ground the Gray/Orange wire the fuel pump cycles.
I think I have a wire crossed or maybe a ground issue?
As I've been reading shouldn't the TFI get 12v when cranking (key in the start position to tell it to "start"? Which wire on the TFI should get this "push"?
Any suggestions and help I'm all ears.
Tim
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