Ok So The Other Day I Am Waiting For A Friend To Get Off Work To Eat And I Am Sitting In The Parking Lot For Like 30 Mins And It Freaking Hot Out!! So I Look Over At The Guage In The Vent Of My Truck And Its Like 55 Deg Air Coming Out So I Just Pushed On The Gas Pedal Alittle To Get The Fan Moving And It Went To Like A Really Rough Shake About 1500 Rpms???????? What The Heck! I Have Had A Weird Vibration Driving In Town For Like A Year But Never Been Able To Figure It Out. So After Noticing It Shaking In Park I Start Noticing That Most Of The Time I Drive In Town Its Right About That Rpm Range That It Was Shaking Sitting In The Parking Lot. I Have No Codes Right Nowand Just Changed The Oil And Fuel Filter About 2200 Miles Ago And I Put A Fuel Pressure Regulator On It About 9 Months Ago I Think And I Am Pretty Sure This Is Gonna Be Related To This Vibration I Have Been Having Driving But Hopefully Someone Can Give Me Alittle Insight Into This Issue. And I Have Noticed Alittle Mileage Drop Around Town Over The Past 6 Months Compared To Every Other Summer I Have Had The Truck. Thanks Guys Hope I Can Get This Figured Out.

Standard answer for most lly problems ice pick #2 and #7 injector wires. Run some injector cleaner thru it and see what that does.

My Only Question Is Why Doesnt It Run Bad While Driving?/ I Mean It Has The Vibration But Not Really Sure If That Is Part Of It Or Not. Everything I Have Read About The Ice Pick Is That The Truck Will Died Or Constantly Run Terrible???

Any Other Ideas. Hope To Start Messing With This Tonite Cause I Have To Drive 700 Miles This Weekend And Want To Make Sure Everything Is Ok.. Thanks