what is the recommended voltage to start a 1993 ford e350 ambulance
Ford Q&AAsk Your Question
1993 Ford E-350 Question: starting problems
Answer #1Herb Ackside October 26, 2012, 11:27Journeyman
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?
Replypushrod, October 26, 2012, 18:07Master
I AGREE, THAT IS FOR EACH BATTERY! WERE BOTH INSTALLED AT THE SAME TIME? DOES ANYONE USE A HYDROMETER ANYMORE?
YOU HAVE A TOTAL OF 12 CELLS IN 2 BATTERIES, IF ANY CELL IS DEFECTIVE IT WILL AFFECT ALL OTHERS. JUST LIKE YOUR FLASHLIGHT.
Answer #2your.mechanic October 26, 2012, 22:03Master
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