89 5.0 with MSD Dist. wondering if is possible ti check if the module is bad?
Going through the "crank but no start" check list.
Going through the "crank but no start" check list.
Any way to check if TFI module is bad?
- Thread starter Chietala
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Another quick method:
Put a test light across the two small wires going to the coil. Have someone crank the engine over and see if your test light pulses.
If so, the TFI is working and the coil should be firing. If this is true but there is no spark egressing the coil, think bad coil.
Good luck.
Put a test light across the two small wires going to the coil. Have someone crank the engine over and see if your test light pulses.
If so, the TFI is working and the coil should be firing. If this is true but there is no spark egressing the coil, think bad coil.
Good luck.
795.0pacecar
lover of pudgy polygamists
At the bottom of step 2 It says....
"Pull the small wire off the starter solenoid so engine will not crank. Have an assistant try to crank the engine. There should be voltage at "TFI POWER RUN(H4), TFI POWER CRANK (H3), and TACH IDM (H5)" terminals. If there is not voltages present, there is a posible wiring problem. If voltages are ok, go to step 3."
Are they wanting the assistang to crank the motor by hand? Or hold key in start position?
795.0pacecar
lover of pudgy polygamists
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