I'm suspecting low fuel pressure on my 2004 T&C 3.3 but I cant seem to find a schrader test port anywhere. Unless its hidden nicely, the only other place I can think of would be under the intake. That would be unfortunate.....

 

If your van has the port it will be located just behind and below the throttle body as shown in the photo's of my '01 Caravan below. The port was eliminated at some point so your van may not have one.





If it doesn't have the port you will need a tee adapter like this:

 

I'm guess I have the version with no test port then. Seems kinda stupid though..... Why would they get rid of something so important?