LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Please help with code!

Old May 28, 2007 | 10:12 PM
  #1  
CRUZMISSLE108's Avatar
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From: Upstate NY
Please help with code!

I had my pcm read and am getting the following codes
PO430/PO155/PO154/PO141 AND PO336 . MY question is with the PO336 code, stated crank sensor out of range (18/24x) ? anyone have any idea what this means? how it happened or how to adjust it? I have put in two new sensors and its still showing up! starting to get frustrated here! I understand the other codes are catalitic related (PO430) and o2 related. My main concern is the crank sensor issue. Can I just unplug it/will that turn off my check engine light? Any help will be greatly appreciated! OH, the car seens to run fine! I am not getting any performance problems that i can tell. Just a slight backfire(popping from the exhaust) when getting out of the gas or downshifting!
Old May 29, 2007 | 06:03 AM
  #2  
Guest47904's Avatar
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Not only will unplugging the CKP not make the SES go out, it will set another code for the CKP.

I would be more concerned with the 154 and the 155 since that has to do with the front sensor on bank 2. Since the front O2s are used for fuel control, they are important.
Old May 29, 2007 | 01:03 PM
  #3  
Injuneer's Avatar
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From: Hell was full so they sent me to NJ
P0336 sets when the CKP sensor duty cycle falls outside the expected range. Could be a loose reluctor wheel, or the wheel hitting on something. It could also be high voltage interference with the sensor or the harness wire. Unplugging the sensor will not turn the SES light off.
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