i have camshaft position (CMP) sensor at bottom of my motor next crank pulley
where is camshaft position sensor.
my girlfriend want to learn auto mechiac im try to teach her but sometimes she hard head
Even though Explorers from 1991 thru 2001 were powered by the OHV V6 I was not able to find any photos of it's main timing chain on the forum. There were hardly any threads that even discussed it. However, there are numerous threads posted on the forum about the SOHC V6 timing chains. I'm confident that the reason for the lack of OHV threads is because it has proven to be very reliable. I have been unable to find a photo of the timing components mounted on the engine with the timing cover removed. However, the photo below shows an OHV crankshaft sprocket, camshaft sprocket, timing chain, guide, and tensioner.
View attachment 57957
Please notice that the chain guide has a straight slot for the chain. When the guide is mounted on the block it does not tension the chain. It merely restricts the chain from deviating from a straight line as the crankshaft sprocket pulls the chain to rotate the camshaft sprocket. Also notice the length and thickness of the chain contact surface on the tensioner. While you can't see it in the photo, under the temporary installation keeper is a plunger that pushes the contact surface against the chain.
The photo below shows the crankshaft to jackshaft chain installed on a SOHC V6.
View attachment 57958
Please notice how the guide deflects the chain inward toward the other half. One problem with this design is the deflection results in significant guide wear. As the guide wears away the distance from the crankshaft sprocket to the jackshaft sprocket decreases resulting in a change in crankshaft to camshaft timing. Also notice the absence of the chain contact surface on the tensioner. It appears to have been completely worn away. The photo below shows a worn and new tensioner.
View attachment 57959
The method of tensioning and the robustness of the tensioner is obviously inferior to that of the OHV tensioner. Ford's redesign of the SOHC tensioner can be seen in the photo. It appears to be limited to enlarging the mounting base and possibly changing the composition of the contact material. I am concerned about spending the time to tear down my engine to replace the tensioner with such a flimsy component of questionable reliability. My first thought was to try and use the OHV tensioner and guide but there are significant differences in the mounting bolt holes on the two blocks.
Does anyone know of an aftermarket tensioner that is more robust?