i've been searching this topic and it sounds like an injector issue. i replaced my vp about three weeks ago and i've got the pump listed in my sig.

i also called the place where i got the vp and he said it sounds injector related too. i'm just wondering how can i tell for sure if it is or not? it only does it when warmed up and it has a real rough idle/misfire. and only in park/nuetral, if i put it in gear so there's a little load on the engine, the problem goes away.

also, is it bad to drive it like this?

 

see if you can get it in to a shop. So they can test each injector by shutting each on off individually while the truck is running.

 

what's that gonna run me price wise?

 

Had a miss at idle when warn too...changed the injectors and now the miss is gone! (side effect was more power)

 

i think they can do it for around 100 bucks. not 100% sure.

 

Have the injectors pulled. The pedistals don't need to be pulled like the Chrysler place in Grande Prairie did for me. Have them POP tested this will tell if they open when they should. I told the dollarshop if PG to do this and they didn't think it was nessecary. When they were tested they peed or poped at 2100 psi to 4100 psi. So well below what they should of 4500. Good luck