I'm one of the founding members of the 99 Cobra club that had to fight (and never really won) the famouse Vibration that came off the rear end up thru the driveline. 99'ers will recall that it was tweak tweak tweak by indexing the shaft until it went away or at least dropped off so you didnt really notice it as much. That and an aluminum driveline finally eliminated most of my problem..Ok, fast forward to the present; I took my 03 (see sigs) on a road trip to Salt Lake a couple of weeks ago and, had a chance to take the speed into the 80's. Speed limit is 75 in Idaho and parts of Utah. When I hit 80-81 at 2100 MPH and 6th gear, there it was. Just like old times. A nice thru-the-seat hummmmmm. Accelerate up to 85 plus it drops off. Clutch in, it drops off. I got home, did a balance on my P-zero's just to eliminate that possibility. Does anyone know of a TSB on this for the 03's? If I have to go thru this again I'm going to blow my brains out. I spent a year jousting with Ford over the Vibe and the Fix and I dont feel like going thru it all again....Of course, like a buddy of mine said the other day; How many places in Western Washington are you going to get to cruise at 83 MPH..?
I had/have the vibe too on my '03. They replaced the whole rear end and it helped, but it's still there. On my car you don't feel it through the seat as much as you see it in the rear view mirror. At any speed over 80MPH the rear view mirror is worthless 'cause everything is blurry... Here's your SSM... U.M. Oasis #3933 SOME 2003 MUSTANG COBRA MAY EXHIBIT A VIBRATION WHILE DRIVING. IF THE VIBRATION IS FELT AT 45 MPH AND INCREASES IN INTENSITY AS SPEED INCREASES, REPLACE THE REAR AXLE ASSEMBLY (FORD PART# 241L). IF THE VIBRATION IS FELT WHILE DRIVING AT LEAST 65MPH AND INCREASES IN INTENSITY AS SPEED INCREASES, REPLACE THE DRIVESHAFT (FORD PART# 2R3Z-4602-BA). IF THE VIBRATION IS FELT WHILE DRIVING AT LEAST 65 MPH AND DOES NOT INCREASE IN INTENSITY, BUT IS CONSTANT AS SPEED INCREASES, THEN NEUTRALIZE THE EXHAUST SYSTEM AS STATED IN THE 2003 WORKSHOP MANUAL SECTION 100-04. <?***:namespace prefix = o ns = "urn:schemas-microsoft-comfficeffice" /><o></o>
Bill Franco...yes. Knew him too well. That TSB also looks way tooo familier. Your basic "start with the ass end and work your way forward" diagnostics. Ok, here we go again.
