when i switched keys last sunday, it only acted up once....since i did an auto scan and cleared all inactive faults....no problems since. this morning i checked injection pump harness as one member suggested , but whereas i had no problems on the road and driveablity symptoms. i didn't think there would an issue there and nothing changed with engine running while moving harness. so I'm not going to worry about it too much right now. thanks for all your responses.