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The transmission has its own temperature sensor, so if it is reporting an overheat condition then the transmission cooler may be failing or restricted. Lots of cars today have external coolers in front of the radiator for the transmission. You'll need to check for transmission fluid flow into, and out of the cooler. If the cooler is restricted, that will be debris from wear inside the transmission and you will likely be experiencing a repair in the near future.
Did you know that there are more lawyers in New Jersey then there are ASE CMAT's (Certified Master Technician) in the whole country? Pushrod is right, ASE certification is rare in part because it is voluntary, not required, and its really only a minimal standard. Today there is way more to know and be able to do than any computer based multiple choice test could ever measure but its a start. As far as answering questions go, lately I have only been answering questions when I have some free time, (I do classes three nights a week) and then only if the question is from someone within fifty miles of me.
Are you referring to diagnostic charges? If so, then it's not only normal it is necessary for the business to operate successfully.
When you attempt to start the car and the lights do not come on, does cycling the key a few times result in a change and them working? The first thought is that the ignition switch is failing, but one has to also consider that you could be losing power to the switch. A good electrical technician would solve this easily.
It should slow down, but not necessarily stall. You should achieve a minimum idle speed approx 600rpm in drive with that disconnected.
The code means that the camshaft position sensor signal and the crankshaft position sensor sinals are not in sync with each other where the PCM expects them to be. The potential causes are the timing belt (if used ) could be off a tooth, the camshaft actuator could be stuck, the camshaft actuator oil control valve could be faulty, and/or passages inside the engine could be sludged.
This needs to be diagnosed, and that requires some of the steps be done with a scan tool, preferrably the techII.
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It is normal for an engine to use oil. You simply have to be in the habit of checking and adding as required and it not only won't hurt anything, the additional additive package with the fresh oil added between changes will actually improve your engine's life. Oil useage is not considered excessive until it results in driveability issues such as fouled spark plugs, and that usually doesn't become an issue until the useage gets to be more than a quart in 500 miles.