when the chain gets loose the CMP sees that , and compared to CKP knows it bounces.
a loose chain makes noise too (odd)
if not the CMP may be bad only.
most shops would replace the CMP first. or pull the valve cover off and jog the cranks shaft and view the chain action to see if it is loose.
the problem is that the chain tension-er can fail. and only it is bad, then latter, cause chain to stretch.
so if CMP swap out fails to fix cmp errors (0016) then the whole chain is replaced and hydr. tension-er, and is expensive parts and lots of labor time, 6 hours at least. the FSM shows the steps, it is huge.
a loose chain makes noise too (odd)
if not the CMP may be bad only.
most shops would replace the CMP first. or pull the valve cover off and jog the cranks shaft and view the chain action to see if it is loose.
the problem is that the chain tension-er can fail. and only it is bad, then latter, cause chain to stretch.
so if CMP swap out fails to fix cmp errors (0016) then the whole chain is replaced and hydr. tension-er, and is expensive parts and lots of labor time, 6 hours at least. the FSM shows the steps, it is huge.
http://www.fixkick.com