engine miss throwing codes

[choproxy]

I have a 2006 TC with 23K miles. It has developed a really bad high rpm miss at 4500 rpm. It will do this on the road or just reeving while stationary. At 4500 rpm it stumbles and backfires like crazy. And at idle it has a miss and the engine vibrates a bit. And the car generally lacks power.

[choproxy]

The last part of my post is missing here is the "Rest of th Story"

The funny part is it performs fine for the first couple of minutes, accelerates with no miss and plenty of power, then after a half mile or so, it falls on its face. The only fix is to wait until the car is completely cold and the cycle repeats.

It s throwing crankshaft and camshaft sensor codes. I ohmed out both circuits and found the crank sensor was twice the specified resistance. I replaced it and the plugs but that made no difference. I also disconnected the O2 sensor, thinking that might put it into closed loop mode, but that made no difference. I was going to disconnect the coolant sensor to make the car think it was still cold, but I'm not smart enough to find that sensor.

I have a coil pack on order to do a swap out for each pack in turn, but I'm generally at a lost. HELP!

[navylife59]

Sorry for taking so long on this. Internet doesn't come to easy out here in the Sand Box. This is what I came up. Without more, this is all I can do.

Is this one of your codes? I need your exact codes and any modifications that you have recently done. Do you have a piggyback controller?

P0016 Crankshaft Position -Camshaft Position
Correlation (Bank 1 Sensor A)
1. Mechanical system (Timing chain has jumped tooth or chain stretched)
2. ECM Comes on, DTC stored

The ECM optimizes the valve timing by using the VVT (Variable Valve Timing) system to control the intake camshaft. The VVT system includes the ECM, the Oil Control Valve (OCV) and the VVT controller. The ECM sends a target duty-cycle control signal to the OCV. This control signal regulates the oil
pressure supplied to the VVT controller. The VVT controller can advance or retard the intake camshaft.The ECM calibrates the intake valve timing by setting the intake camshaft to the most retarded angle while the engine is idling. The ECM closes the OCV to retard the cam. The ECM stores this value as the VVT learning value. When the difference between the target and actual intake valve timings is 5°CA (Crankshaft Angle) or less, the ECM stores it.
If the VVT learning value matches the following conditions, the ECM determines the existence of a malfunction in the VVT system, and sets the DTC.
• VVT learning value: Less than 27°CA, or more than 49°CA.
• Above condition continues for 18 seconds or more.
This DTC indicates that the intake camshaft has been installed toward the crankshaft at an incorrect angle, caused by factors such as the timing chain having a jumped tooth. This monitor begins to run after the engine has idled for 5 minutes.