Need some ones help
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Joined: Jun 2010
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Need some ones help Getting 4 diffrent codes for o2s heater circuit one of the them is po135 bank 1 ,sensor 1 malfunction , bank 1 ,sensor 2 malfunction and both of bank 2 sensors. And i all so got p0327 knock sensor 1,2 circuit ,low input. Can so one help me please. Someone all so told me that i dont have a knock sensor conected at all is that possible ? My motor is a 02 and its in a chevelle can you tell me where the knock sensor is?
If its a ls1 they are underneath the intake manifold, there's a connector behind the intake that connects to the harness that connects to the knock sensors. Check the connector behind the intake. Do you have any o2 sensors connected?
Thread Starter
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Joined: Jun 2010
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So there undernea knocth the intake manifold and not on the side of the block like other people say. And i have all 4 o2 sensors but no cats what do u think my problem is ? And what dose the knock sensor look like ?
Yes underneath the intake manifold but there's a connector in that very back that u can check without ripping the intake off. Ur rear o2 aren't doin anything important other than letting you know you have no cats. Have a sponser tune the rear o2 sensors out to where ur computer won't use them.
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