i keep getting a p0340 code on my caravan. replaced the cam sensor and crank sensor. van keep stalling with the same codes. i dont know what else to do.

 

OPERATION

The camshaft position sensor contains a hall effect

device that provide cylinder identification to the Powertrain

Control Module (PCM) (Fig. 4) or (Fig. 5).

The sensor generates pulses as groups of notches on

the camshaft sprocket pass underneath it. The PCM

keeps track of crankshaft rotation and identifies each

cylinder by the pulses generated by the notches on

the camshaft sprocket. Crankshaft pulses follow each

group of camshaft pulses.

When metal aligns with the sensor, voltage goes

low (less than 0.3 volts). When a notch aligns with

the sensor, voltage spikes high (5.0 volts). As a group

of notches pass under the sensor, the voltage

switches from low (metal) to high (notch) then back

to low. The number of notches determine the amount

of pulses. If available, an oscilloscope or DRBIII

PEP Module can display the square wave patterns of
each timing event.

 

I sent that piece out of the complete service manual that you can get from this forum. I thought it might help you understand how the sensor works. You can get a complete manual (but it's an Intrepid manual) by doing the following:

Click on Dodge forum on the top menu
Scroll down and click on Dodge Intrepid
Scroll down and click 2nd Gen Intrepid
Scroll down and click on THE HOLY GRAIL
Then click on the link 2nd Gen LH service manual
from there you can download parts 1 and 2 of the manual.
You will need Adobe.

 

If the van has a lot of miles on it, you could have a problem with the flex plate or flywheel.

 

ok here goes i have a 2006 dodge caravan 3.3 replaced crank sensor and connector swapped cam sensor and still have 3040 because of the way the car acts i really dont think its the flex plate master tech i would like to know if u yourself has ever seen a flex plate cause this problem iam thinking fuel injection wireing harness i can see on the scanner when problem occurrs my fuel system is in open mode also whatcu think

 

also checked both sensor voltage and grounds

 

oh yeah mine has 249000 on it it runs great accept this cutting out stuff because of code 0340

 

My 2 cents. i changed took off timing chain cover on my 06 to put on a gasket for coolant leak. i had to pull camshaft sensor as one of the things to remove cover. the camshaft wasn't seeded just right and received running problems as well as starting.

manual says to put the tab of paper on bottom of camshaft sensor before installing. dealer was going to sell me a whole pack, only needed one, they wouldn't see just one.

cut out a tab from a business card. wipped bit of grease on bottom of sensor and attached circled tab. the tab allows the space to be correct between sprocket for timing. van ran better after this. still not sure why the tab was needed since it appears that when sensor it installed it would bottom out against the metal surrouding hole inserted into. but it worked.