I have a 2002 Dodge caravan 3.3L V6 that intermittently cranks and starts but wont stay on, when the van starts you have to keep you foot on the gas and keep the rpm between 2k and 3k , to keep it running , when you let go the gas and the rpm drops the van shuts off, "
" if you keep your foot on the gas and let it warm up for about 10 min it will stay running if you take your foot off the gas"

when using a scan tool, it revels no error codes, and the pcm seems to be working fine,

we have took it to several local mechanics and they could not find the problem

so far we have replaced the following parts

1.crank senor
2.cam sensor
3. spark plugs
4. ignition coil
5. fuel pump
6. fuel filter
7. throttle position sensor
8. oxygen sensor

any suggestions or help would be appreciated,

 

Anything here: http://www.aa1car.com/library/2005/us80530.htm