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 5:54 AM
Avatar
RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 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 6:57 AM
🔧 Tools & Auto Repair Parts
Find automotive tools, diagnostic equipment, and replacement parts for your next repair.
Shop on Amazon →
Paid affiliate link. As an Amazon Associate, we earn from qualifying purchases.
Add a reply
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.

Ask a new question

Frequently Asked Problems for This Vehicle