96 Caravan 3.0L p0340

I'm a little stumped on this one. I'm fixing cars for a friend that owns a used car lot. He towed this van over to my house with a broken timing belt. I replaced the belt and the engine runs, just very badly. I double and triple checked the timing marks and I keep getting the p0340 code. I tested the cam sensor and everything checks out there. I found the signal wire where it goes to the PCM and it's getting the signal from the cam sensor. The only other thing I can think of, is that it somehow still has bent valves even though it's a non-interference motor (according to info gathered here). I'm having a heck of a time doing a compression test. I managed to check 3 cylinders but just can't get the tester on the other three. I can feels poofs of air coming out each plug hole while cranking so I tend to think I have at least a little compression and bent valves would mean zero compression. Am I thinking right here?

What's the next thing to check?

there are several steps you can take to fix this problem. First, disconnect the connector at the distributor & check the terminals, make sure they aren't damaged in anyway. If you have a voltmeter, turn the van on, engine off & backprobe the orange wire coming from the distributor, that's your 8V reference. If you don't have 8V, you have either a short/open or a bad PCM. If that's OK, turn the vehicle off, set your meter read ohms and connect one lead to the black/light blue wire and the other lead to a ground and check your results. If you have less than 5.0 ohms, your OK, if not, you have an open circuit somewhere.
Next, disconnect the PCM and check the terminals make sure nothing is damaged/out of place. If that's OK, check the resistance of the signal wire, the tan/yellow wire. If it's less than 5.0 ohms, your good, if not, you have an open/short.
You more than likely have a bad camshaft sensor and that means the distributor has to be replaced. Hopefully I haven't said too much to confuse you, just want to help you track down the problem step by step according to factory standards.

Not confusing at all. I'm very familiar with electronics.

I checked the ground, it's good. 8Volt reference is good, and I'm getting the pulse from the signal wire. I have a super nice Fluke meter so it has the resolution to show me that. I also backprobed at the PCM connection for that signal it it's there.

This all might be moot, though because the code didn't come back immediately like it has before. I grabbed a used cam sensor from a pick and pull yard. Not sure why the dizzy has to be replaced for this part since it comes right out with a few turns of some screws.

I think it somehow has bent valves or an otherwise dead cylinder. This pile has a pretty good oil leak and it wouldn't surprise me if the people it was repo'd from let it run low on oil more than a few times.

,,.