Long time viewer, first time poster
Long story short, my timing belt snapped and smashed up all 20! Rebuild complete, engine fires up, and cuts out after about 10-15 seconds. Timing bang on to the tooth, fired twice, no ill-effects, double checked valves fine via borescope.
Computer fires me P0016 & P0017 codes, Crankshaft position correlation bank 1 sensor A & B. These correlate to the ECM-644A (camshaft position, exhaust) and ECM-643A (camshaft position, inlet).
I believe this is due to the VVT phaser. An important note, I did not touch the T55 torx holding the cam timing / VVT set. I lifted the cams out of the engine on rebuild whole and back in to the timing marks, which I assumed would be fine. I marked up the cam tooth to the back of the unit to ensure these were aligned, and they remain so.
I recall my exhaust cam spinning backward, which is why I assume it has VVT, but the cams don't have the dome shape like the VVTs. I have rotated the inlet and exhaust back and forth to attempt to engage the spring load, to no avail.
The engine is a B5254T3 for reference. Which leads me to my three questions. Does it have VVT (assume so as the engine cuts out when timed)? If so, is this on both cams (inlet and exhaust)? Finally, how do you engage the phaser spring back function when you haven't fiddled with the VVT units?
It is my thought that once this is enabled, I can hold one or both cams in the full forward position which will be against the tension of the spring, which should then line up with the timing marks. Once the belts on in that fashion, hopefully happy days!
Any help greatly appreciated.
Chris.
