Engine is shutting down while driving and at stop signs

KORSE200120

MEMBER
2007 FORD TAURUS
78,000 MILES

I have Ford Taurus 2007. Last few months, it would stall when I stop at red light or when I was slowing down and cruising. It would turn on without problem immediately. Also, I would feel a kick and everything would shut down for a split second when I was driving about 40 mph. It happened just couple times. My certified mechanic could not find the problem and ended up replacing some relay for $30 because it was a primary suspect. However, the problem did not disappear. I took car to the dealership, and they said I need to replace camshaft sensor and synchronizer as well as ignition coil (total of $800). My mechanic says that they are simply guessing and he truly doubts that both things are problems at the same time. He also says that their diagnosis makes no sense to him. I don't know what to do.

1 Reply

HMAC300

MECHANIC
48,601 POSTS

The cam sensor sits on top of the syncronizer and the syncronizer advances and retards your cam as it speeds up and down. They may be guessing but there are tests that they can do for the cam sensor and cam syncronizer. What it does is read where the exaust and intake cams are for best power and mileage. One thing youcan try is to clean the throttle plate and iac valvehole if you can see it with choke cleaner as it tends to gum up with oil. It may or may not cure it, as normally with a cam sensor or syncro your service engine light will go on.