2002 Ford Windstar van hesitation

2002 FORD WINDSTAR
134,452 MILES • 6 CYL • 2WD • AUTOMATIC
Avatar
SRBARABS
  • MEMBER
  • 1 POST
In the past week, my van has been experiencing hesitation/lunging. I notice it most around 65 MPH, but it has happened less often at lower speeds. Now my check engine light has come on. I added some Lucas fuel injector cleaner yesterday to 1/2 tank of gas (aprox 14 gal) and shortly after engine speed began to fluxuate radically. Stopped and topped off the tank, and I am now back to the original problem. Fuel filter was changed about a year ago (maybe 25k miles).

Have the Car MD and I get code PO340.
Sep 4, 2010 at 12:54 PM
Advertisement
Avatar
RASMATAZ
  • CERTIFIED EXPERT
  • 75,992 POSTS
P0340 indicates a Camshaft Position Sensor Circuit Malfunction. The keyword here is circuit. The malfunction can be anywhere in the wiring to and from the PCM or the PCM itself. The code can be set if there is a short to ground, short to power or and open circuit. You need to test the whole circuit before replacing parts.

Also, A special service tool such as Syncro Positioning Tool T95T-12200-A must be obtained prior to installation of the replacement CMP sensor. Failure to follow this procedure will result in improper sensor alignment. This will result in the fuel system being out of time with the engine, possibly causing engine damage.
Sep 4, 2010 at 1:57 PM