Oil Control Valve

[Gottmonkey]

i have an 03 mazda6 3.0 I recently changed my valve cover gaskets. Drove the car 100 miles. On break at school i took a spin and i was lacking power it finally just died after 1/2 mile. we ran the engine codes and one said something about a bank timing being over retarded so we tested the ocvs. i checked the ohms on the both and the rear one didnt have a reading. i must have broke the connector on the rear ocv. i dont remember the engine light codes but we cleared them. first question... are the ocvs interchangeable from front bank and rear bank because i found a parts car and went and bought the front one just because i didnt want to pull the upper intake off. the part number on alldata only showed one part number for the ocv. i put the ocv i bought on and changed the spark plugs since they were accessible the car started and i drove it another 1/2 mile then it did the same thing. died and wont start (it does crank) but no engine light. rite before it died it and a loud rattle like timing chain slap... second question would this be caused by a cam sensor (granted the ocvs are interchangeable) i have popped the valve covers off yet just want to make sure i try everything else possible first. Thanks

[MaKeH]

When I bought my ocv the diller told me they are the same (front and rear one).

[Gottmonkey]

Is there a certain process u need to do to install the ocv... I just took the one out and put the other one in