2000 Dodge Van PCM or not

5.2L Ram 1500 Van will not start. Problems began with a routine start, hesitation, rough attempt to idle and immediately quit. No other leading signs of a problem. Restart attempts appeared to engage starter but only to a weak grind. After attempting to start, noticing gauges dropping or pulling power, I could hear a continuous clacking or reset to the power box where most of the relays are. Every 1-2 seconds, a click or clacking sound came from the relay power box. Removing different relays only softened the noise. Even replaced a few with no result. With all battery tests, connections, ground wire checks appearing no problems, I decided to change the starter. No change, it still appears to engage the starter but without enough power to start (seems power is being pulled elsewhere). Old starter appeared fine and teeth have no problems on wheel. I then noticed a humming sound between the clacking of the power box and traced it back to the fuel power. With just the ignition on, the fuel pump is constantly running somewhat with the clacking/reset of the relays. It has occasionally slowed down to 6-8 seconds in between but after restart attempts, back at 1-2 seconds with the fuel pump just pumping noise. I've released the belt and turned the crank, engine isn't ceased and moves with a rachet. Yesterday, I noticed a leak under the car, it was gas, coming from the seal around the crank/upside of oil pan.... I then drained about 3 gallons of old and gas from the engine. I've had a few mechanics stop by and look and all appeared uncertain. I can't get the odometer to code and all signs to me, reading what I can from the manual lead to the PCM. I found the below Q and A just googling and wanted to know if you believe it is the PCM or is there anything else I can try to know for sure. Thanks, Jeff


http://www.justanswer.com/questions/21euh-ok-fuel-pump-runs-constantly-ive