1993 Ford E-350 Q&A
1993 Ford E-350 Question: starting problems
Your batteries should have 12.6 volts when fully charged, 2.1 volts per cell X 6 cells = 12.6 volts. Have you had the batteries load tested to make sure they are maintaining the proper voltage while cranking? Too much voltage drop will keep the starter from turning properly; too much current draw from the starter will also cause problems. Are the battery cables tight and in good condition? - Herb Ackside
ideally you should have 12.6 voltes, you should start it with 12.0 voltes as long as it does not drop below 9.5 voltes WHILEST cranking - your.mechanic
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A defective thick film ignition (TFI) module can cause the engine to stall while driving, or the engine may not start. A failed TFI module will require replacement.
A defective key-in warning chime switch can cause the ignition cylinder to bind from run to start and / or start to run movements. The key-in warning chime switch will need to be replaced.