Jeep cranks, almost starts, then dies

Hey all,
I have an 01 Jeep Wrangler 4.0 Auto and about a week ago it wouldn't start, so I checked the codes and got that it was the Crank Position Sensor, so I replaced that. I also found a small hole in my air intake pipe so I replaced it. Unfortunately it is still cranking without starting. It is getting fuel, it seems to be getting air and spark because it sounds like it fires up for about half a second, but doesn't really start. Sorry if any of that doesn't make sense or if anything needs clarification, I'm happy to clarify anything. I can even send pictures or if it would help I might be able to attach a video of what I'm hearing when I try to start it. (I'm new here so I don't know if it allows videos)

Rubicon88 said:

Starting fluid. Gum cutter will work as well.

Spray a small amount if that into the TB.

Try to start. Does it run for a few seconds?

If yes...then you've a fuel delivery problem.

If not....You've an ignition issue.

Good luck.

Click to expand...

So I tried the starter fluid and it sounds like it fires for a second, just the same as without, then dies. It seems like fuel is getting to the engine, but I'm not sure how to check.

Chris said:

Have you checked the fuel pressure at the rail?

Click to expand...

I don't have a gauge to check it, but I depressed the nozzle and fuel sprayed out. I'll get a gauge to check it for sure tomorrow, though.

I thought I'd update y'all, it did turn out to be the crank position sensor that was faulty. Thanks for all of you help!