P0336???
#1
P0336???
My car is setting the P0336 code. I have a 96 TA, stock ported heads, cc503 cam, new GM opti, Jethot Longtubes, ory, hooker catback. I have replaced the crank position sensor and the code came back. The engine light will turn off at random times during start up, but then it will come back. My car is running good, with no misfires, no bad idle, no start up hesitation. I cleaned up the wire harness to the crank position sensor but the code is still there. I really want this fixed because im scared to drive my car since i dont know much about this code. what is the worst case scenario for this code? And most importantly, how do i fix it?
Last edited by ta_ws6; 07-14-2009 at 12:03 AM.
#2
The code means the crank position sensor (CKP) signal duty cycle is outside the normal range. It will not affect the way the car runs, the sensor was only added in OBD-II to detect misfires. Did ths problem appear right after the cam install? Or did it run for a substantial period of time after the cam install without the code?
Are you sure the reluctor gear is on the crank tight? Any possibility its touching the timing cover or the sensor? Are there any high voltage (plug, coil) wires close to the harness for the CKP sensor?
Are you sure the reluctor gear is on the crank tight? Any possibility its touching the timing cover or the sensor? Are there any high voltage (plug, coil) wires close to the harness for the CKP sensor?
#4
The code means the crank position sensor (CKP) signal duty cycle is outside the normal range. It will not affect the way the car runs, the sensor was only added in OBD-II to detect misfires. Did ths problem appear right after the cam install? Or did it run for a substantial period of time after the cam install without the code?
Are you sure the reluctor gear is on the crank tight? Any possibility its touching the timing cover or the sensor? Are there any high voltage (plug, coil) wires close to the harness for the CKP sensor?
Are you sure the reluctor gear is on the crank tight? Any possibility its touching the timing cover or the sensor? Are there any high voltage (plug, coil) wires close to the harness for the CKP sensor?
#5
#6
The cam changes the response of the crankshaft to the way the cylinders are firing. The whole purpose of the CKP is to provide the PCM with a measure of the rotational velocity of the crankshaft, which it can compare to the known crank response to the stock cam. Changing the cam is sometimes enought to change the irregularities in the crank rotational velocity, to the point where the PCM will start indicating misfires. The more aggressive the cam, the more likely this is to happen.
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