I have a 1998 intrepid 2.7. It died in a parking lot. It would start and idle but would not increase above idle without stalling. It got towed home. Now it doesn't idle although it sounds like it wants to start. I suspected fuel filter or MAP sensor. Test on sensor gave me good voltage on PCM lines. Backprobing just gave a flicker on the voltmeter needle. Is there anything else to check?