Quote:
Originally Posted by larz18
the other is 0.2 - while cranking the 3rd goes up to 1.2 volts.
the batteries test at 12.4 volts and 10.8-10.9 while cranking.
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Those readings indicate that your ICP sensor is reading as it should at at key-on/engine-off (between 0.18 to 0.25 volts), and that it builds to well above the minimum 0.8 volts needed to fire the engine up.
In a nutshell, ICP pressure is NOT your problem here.