Q: I own a 1998 Ford Windstar limited edition that has been great so far. Recently I’ve been having what I think is a shifting problem. Three times when trying to enter the highway, the car would go but barely broke 20 mph and once I had to drive home doing 35 mph. If I tried to go faster the car would buck and shake and get noisy. About five blocks from home the car acted normal and has been ever since, even getting 70 mph recently. The mechanic couldn’t find any computer codes. The transmission shop did a compression test that was normal, the fluid is clean. This has us baffled. Do you think this is a transmission problem or mechanical or even a computer problem? The van has 125,000 miles and runs great except for this intermittent problem. I really enjoy this car and would like to keep it. Thank you for any help.
A: With no fault codes present, did the technician check for any history or pending codes? The noise you mention does sound mechanical not electronic. Check a dragging brake, especially a rear brake shoe. Without more information there is no way anybody can pinpoint your problem. Have the technician check the free wheel spinning of all four wheels.