The engine may misfire and/or buck while driving at freeway speeds with no fault code stored in the powertrain control module (PCM). This can be caused by an intermittent fault with the camshaft synchronizer assembly. This condition can be diagnosed by monitoring knock sensor data as per Ford service bulletin #05-22-12. Replacement of the synchronizer assembly will be required to correct this concern.Google+
Car Problem Reports
Ford Taurus Engine Buck/Misfire at Freeway Speeds
Ford Taurus Problem
Engines Affected: 3.0L V6, 3.0L V6 DOHC
Average Mileage: 117,420 mi (33,000 mi - 289,800 mi)
Visitor, 2008 Ford Taurus, 86,000 mi
the car will run smoothly then without notice it will chug a few times. This genrally happens at 55 to 70 MPH and when on an incline. It will sometimes happen at lower speeds but doea not seem to do it below 40 MPH.
Visitor, 2002 Ford Taurus, 3.0L V6, 100,000 mi
engine chugs at high speed when going into passing gear. worse when engine is warm
Visitor, 2000 Ford Taurus, 3.0L V6 DOHC, 70,000 mi
engine cuts out, knocks and bucks around 40 to 60 miles per hr. problem not solved yet.
anyone have any advise?
Engine misfires, bucks and jerks at highway speeds, particularly toward the end of long trips (2- 4 hour trips). Had camshaft replaced and it went away for about 3 months then returned!
Visitor, 2000 Ford Taurus, 3.0L V6 DOHC, 289,800 mi
bucks for a second then fine again, somedays not at all. Its getting worse.
Visitor, 2002 Ford Taurus, 3.0L V6, 68,475 mi
feels jerky at 40 mph, recently informed the bird chirping noise is the synchronizer making itself known it needs to be replaced,
Visitor, 2008 Ford Taurus, 115,000 mi
Chugging at 55 mph
Visitor, 2003 Ford Taurus, 3.0L V6, 33,000 mi
not fixed yet
Visitor, 2002 Ford Taurus, 3.0L V6, 165,000 mi
Engine hesitates @ 70 mph and will continue @ lower speeds also.
Visitor, 2002 Ford Taurus, 3.0L V6, 81,300 mi
I had problems with the car Misfiring and buck when on highway going up a high a few times. Now today all of a sudden it started to make a roaring sound and did make it to pull off the road and it happened going up the same hill that it would misfire and buck. No one knew why it would do that. Not fixed yet so will post again.