Re: replaced cam shaft sensor now the code flashes
DISCONNECT THE BATTERY FOR ABOUT 5 MINS THEN PUT THE CAR IN LOW GEAR AND RUN THE CAR DOWN THE ROAD UP TO 4,000 RPM THEN LET OFF AND LET THE CAN SLOW DOWN ON ITS OWN ,DO THIS THREE TIMES .WHAT THIS DOES IS LET THE CAMSHAFT SENSOR AND THE CRANKSHAFT SENSOR LEARN EACH OTHER ,THIS HAPPENS ON THE DECELERATION PART WHEN THE ECU SHUTS THE INJECTORS OFF .THEIR IS MORE TO THIS.BUT THIS WILL SOLVE YOUR PROBLEM
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I would go and but a cam sensor from the dealer. Aftermarket cam sensors can be slightly irregular. I had this happen to me with an aftermarket ABS sensor on a chevy. The whole problem was a gap difference equal to two sheets of paper. Whats happening is there is an open circuit in your old sensor that causes the check engine light but the new one has a good circuit but bad reading. I would say that is your problem.
there are tsbs on this problem where the dealer has made new style cam and crank sensors and they should be replaced in a set and gotten from the dealer. i would have this problem checked but from what you listed i would say you need to replace the sensors. good day.
replace the cam shaft positioning sensor. this is not a big job
the sensor is usually on front of block above the crankshaft pulley wheel
to change involves disconecting wire from sensor. remove bolt remove sensor,intall new sensor, replace bolt.re connect wire
Possible SolutionsWith a P0340 OBD-II trouble code, diagnosis can be tricky at times. Here are some things to try:
Visually inspect all the wiring and connectors in the circuit
Check for continuity in the circuit wiring
Check the operation (voltage) of the camshaft position sensor
Replace the camshaft position sensor as required
Check the crankshaft position circuit as well
Replace circuit wiring and/or connectors as required
Diagnose/replace the PCM as required
Sounds like since you have replaced both the camshaft and crank shaft sensors you need to look at the PCM. Go down the line of possible solutions and don't replace the PCM unless nothing else works obviously. I hope this helps but it looks like you are looking at getting a new PCM. Good luck. Thanks for rating my response and for using FixYa!
I changed all the parts I mentioned and finally I decided to try the crank shaft sensor and if that didn't work I was going to replace the cam shaft sensor. Luckily the crank shaft sensor worked but only after I replaced all the other parts. But at least now it finally started.