Hello, I'd like to draw a little atention to the camshaft position sensor trouble code. Is it that the sensor itself is a whimp and signal is soon lost, or is it a stretched timing belt, a timing problem. I think the sensor should be good for over 5 years, more like 10 years of life without it weakening or dying. I replaced my car's distributor a few years ago because of it and the problem is back. I look around here and search and it seems like a common problem with it going into trouble mode.
The first step is to check the engine timing, the belt may have stretched, check.
So, what if the sensor itself is a whimp? it's a permanent magnet and a coil of wire. The coil of wire senses the electromagnetic field of the permanent magner and a signal is produced when there is a change. Voltage is applied to the coil of wire and when there is a change in the magnetic field, the signal is produced.
What can go wrong? Heat can demagnetize or weaken a permanent magnet, a cycling magnetic field (hertz), impact (shoking blows), a stronger magnetic field of the opposite polarity, all of these.
With the magnetic field interruptor disk, the rotating metal part with the air gap or window partly in the sensor can become magnetized or loose its magnetic field altering capability.
I would blame the heat weakening the magnet, the rotating plate with the air gap loosing its ability to alter the magnetic field, or the coil loosing its electrical characteristics and weakening the signal.
As an experiment, with the timing belt checking o.k., I want to adjust the distributor to compensate any advance or retarding of the camshaft position signal. The spring pins must be removed from the distributor so the distributor can be rotated and adjusted accodgingly. If the trouble code goes away, the timing has a problem and the sensor circuit is o.k. And if the problem stays, the timing belt is o.k. and the problem is the sensor.
Modified by jorge r at 3:57 PM 7-20-2008