Hi JDL. I'm confused by it having spark. On older models it won't if either sensor is defective, but from what I've read, beginning with the early 2000s models, there will be spark if only one sensor fails and I think it can run on just one but the injector firing times will be off a little. I'd still be looking at fuel pressure or fault codes. Check for spark on both pairs of cylinders. Unless things have changed for '05 models, if the timing belt is off by one tooth, the Check Engine light will turn on and the stored fault code will be "cam and crank sync". The engine won't run well either. At two teeth off, the Engine Computer will shut the engine down to protect the valves. At three teeth off, the open valves will hit the pistons and be bent.
On the single cam engine, there was a common problem with the dowel pin between the camshaft and sprocket shearing off, and the sprocket would turn slightly on the camshaft. The timing marks would be correct, but the camshaft itself would be late. The camshaft position sensor would pick that up because it's at the other end of the camshaft. The symptom often is a no-start condition with one of the two coils firing intermittently so it looks like you have spark when you really don't.
Monday, August 15th, 2011 AT 8:29 PM