Hello everybody, I am working on a 2001 honda accord 2.3, the car died on the road, it cranks but it doesn't start, the computer has two codes, for the tdc and cam position on, I thought maybe the timing belt is the cause of the problem. I took all the upper cover and started to move the engine to align it with all the timing marks.
I aligned the TDC mark at the crankshaft pulley with the marker on the lower cover but the "up" mark on the cam sprocket is all the way down.
the camshaft mark should be up with the TDC mark at the crankshaft pulley.
I took off the timing belt and tried to move the cam sprocket to the up position but it turns a little but then it stops and it doesn't move.
Can somebody explain what's going on?
also, after taking off everything I found the bolt that keeps one of the two sensors by the cranshaft had come off and the sensor was not in place.
Any help will be appreciated.
Thank you.

 

Camshaft rotates at half speed of crank.

On a 4 stroke engine to complete a full firing order, the cam/distributor will rotate 360°, crankshaft will rotate 720°.

With the crank at TDC and the camshaft pointing down. The distributor rotor should be pointing to #4 tower and #4 cylinder will be at TDC.

Engine is interference, you will not be able to rotate camshaft with any piston at TDC.
Leave the crank at TDC and verify the camshaft is 180° 'out' with the two divets on the cam gear lining up with the top of cylinder head in the correct 'down' position.

To fix your initial problem, clean off the sensors and replace the missing bolt. THAT was the cause of your code.

 

Thank you very much. I will work on the car tomorrow.