1999 Mercury Sable Engine Shudder at 30 to 40 mph

1999 MERCURY SABLE
121,000 MILES • 6 CYL • FWD • AUTOMATIC
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INDIANAGLASSMAN
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Had a P0401 replaced EGR DPFS and solenoid, now no Check Eng.
Car still "shudders" at 30 to 40 mph and other speeds above 40 at times all under light acceleration. Happens more when it is warmer outside 50 deg vs 35 deg.
Had the transmission checked by local trans shop, no codes, one shop wants to rebuild it with new channel plate and lock up solenoid but the Ford dealer couldn't find anything wrong with the transmission. A third trans shop said it was an engine miss but Ford couldn' t find it either.
The only other know problem is a squeek coming from the Cam Sync bearing
Help, no one seams to have enough experience anymore to solve problems.
Dec 15, 2009 at 9:51 AM
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BMRFIXIT
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Did you try tranny filter and fluid change
I would 1st


remove CAM sensor and use a combination of WD40 and oil mix
Dec 15, 2009 at 7:28 PM