So second Gen Ram 360 magnum volt gage started running high tried to limp home but eventually stalled. Now she will spin over but will not fire any suggestions what was likely damaged. Where do I start looking to try get the old girl to fire again.

 

How much 'over voltage' are we talking about, and for how long? Does the fuel pump prime when you first turn the key on?

 

On the gage it read just about 16v she was run for about 50 miles.

 

On the gage it read just about 16v but i suspect it was not accurate the battery was cooking pretty badly by the time it died she was run for about 50 miles.
And yes the pump primes.

 

What year truck ? The gauge behaves differently between older trucks and newer ones with fully computer controlled instrument panel. At least the newer ones only consider voltage over 16.6V as an error condition and light the "Check Gauges" light. So 16V is high but not critical. I'm wondering if there is some basic electrical issue e.g. with engine ground that made the voltage read wrong and now the PCM can't control the ignition or fuel injectors. Step one would be to check what voltage the PCM registers (most simple OBD readers should do that). Then, is there a "tach bounce" meaning the tach needle comes off rest during cranking.

 

Truck is a 98. As I said it was reading at just under 16v on the gage but was over charging since the battery was cooking. I will try look for the TAC bounce tomorrow.

 

boost chargers can run 18v or more, and i have not had issues with computers using a booster, though they are something to be used with caution

 

Yeah so at the very least it appears I lost the crank sensor. I have no movement on the tack when I crank the engine. So that's gonna be no fun to deal with thankfully its supposed to be warm out today. Freakishly warm weather for Feb in ND so maybe someone is looking out for me some what anyway.

 

Seeing that you are in ND I'd double down on checking ground connections at the front of the engine and between engine and battery before throwing parts at it. With the electrical gremlins at the same time it might not be a defective CKP. If the grounds all check out then change the sensor.

 

Grounds all checked out and new sensor in still no TAC bounce. Any other suggestions or am I looking at a new ECM