1997 ram 5.2 will idle after u frist start it but after u bring the motor over 1000 rpm its quits i just changed the rotor, capplugs an plug wires is it timing or sumnthing else

 

try checking your fuel pressure, it's probably cutting out at 1000rpm.

connect a timing light (or an in line spark checker) and see if your spark is somehow disappearing (I usually connect it to the wire that is connected to the ignition coil, careful you can get nasty shocks)

and lastly try checking if your cat is plugged, remove 1st 02 sensor (before cat) and see if it makes any difference.

 

dont forget your pcv valve such a simple part can change so much.!!!

 

I had a similar issue with a rough idle until i swapped my pcv valve like tdmopar said.

 

woops, reread the post. my bad. what those guys said...

 

i changed the pvc valve an is idle great

 

Have any problems with pack rats? They can be a ****!
i.e....
Crank position sensor plug, coolant temp. plug, etc...
If the coolant plug is torn, the ECU will throw a LOT of fuel in the mix. It "thinks" the car is at ~30deg. f. So, it will enrichen it too much if it is FUBAR.
-jt