Originally posted by SVTFORME2:
I have a 2000 CSVT with about 43000mi and I am now experiencing the bucking problem. I did a search and I really am having a hard time following what everyone was discussing. I saw a post titled "Problem solved", but I really didn't see what the solution was. Has anyone found a solution that definitely works so that I won't have to spend thousands of dollars. Any help would be nice.




Here's a cut-and-paste of a reply I made this evening to another post ...


Here's what happened to my '98 CSVT ... and how it was fixed.

I had the engine "bucking" problem at low/no throttle similar to your problem and described in previous posts. It began with uneven accel and a change in the exhaust note, gradually worsened into a severe and re-creatable misfire-like condition (that did cause it to throw codes -- ultimately irrelevant -- and light up the CEL three times), then got to the point where the engine began to flat-out quit under load.

Because the car was at 54.8k, the basics were covered first: replaced fuel filter (Purolator), plugs and wires (Motorcraft). No money wasted -- but no fix, either.

Long story made short: the conscientious guys at the independent repair shop I've been using since my relo to Pittsburgh (Vince's Automotive on Rte 19 in Perrysville, for CEGer's in Pittsburgh) first rescanned the codes, then found a TSB that looked like a possible match with my problem: erratic engine performance triggering multiple codes. It was a match -- A 7-volt wire at the right-rear of the engine compartment, feeding power to 4 sensors, was being chafed at the right-rear engine lift mount; its sheathing had been worn through. Every time engine movement (or Dave, the tech at Vince's) brought it into contact with metal, the four sensors would freak, causing a misfire and/or kill the engine.

Sheathing was repaired; the chafing point of contact was covered with a short section of (I think) neoprene tubing; and the problem is gone.