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86 sensor question - identify this part

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Old Dec 13, 2006 | 09:17 PM
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Default 86 sensor question - identify this part

I am working on a 86 car. Exhaust is rusted pretty bad. I am not getting any 02 signal. According to the manual the 02 sensor should be on the passenger side manifold, but all I can find is this loose wire...cant tell if part of a sensor is broken off in there. I see what looks like the 02 sensor on the drivers side exhaust manifold. Can you identify this connector?



Last edited by corvette1989bham; Dec 13, 2006 at 09:20 PM.
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Old Dec 13, 2006 | 09:52 PM
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That connector goes to the knock sensor. It's threaded into the block right above and to the front of the starter near the oil pan rail. The O2 sensor on an '86 is on the driver's side. Your manual is incorrect.
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Old Dec 13, 2006 | 10:02 PM
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Further more, the only two things on an '86 that this type of connector was used on that I know of, was the knock sensor, and another for the aux fan switch (on cars with two cooling fans only) which would have been on the driver's side head between spark plugs 1 and 3. If there is only one cooling fan on your car, there will be a pipe plug with a square hole in the driver side head instead.



Last edited by 86PACER; Dec 13, 2006 at 10:05 PM.
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Old Dec 13, 2006 | 10:05 PM
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thx....I am sure I will have more questions to follow.... there is a plus on the pass side block....that that was the knock sensor?
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Old Dec 13, 2006 | 10:09 PM
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I just added a picture of the knock sensor. Which repair manual are you using?
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Old Dec 13, 2006 | 10:19 PM
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Originally Posted by 86PACER
If there is only one cooling fan on your car, there will be a pipe plug with a square hole in the driver side head instead.
The manual is incorrect on this as well. But you are not.
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Old Dec 13, 2006 | 11:18 PM
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I am using my 89 helms shop manual to try to work on this 86....


this is from mitchell for an 86

Last edited by corvette1989bham; Dec 13, 2006 at 11:37 PM.
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Old Dec 14, 2006 | 01:27 AM
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corvette1989bham, that pic is correct. Drivers side is shown.

86PACER, is correct in all his statements. Good job.
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Old Dec 14, 2006 | 01:29 AM
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Originally Posted by corvette1989bham
there is a plus on the pass side block....that that was the knock sensor?


There is also a coolant temp sender for the dash between #6 and #8 spark plugs. It has a spade terminal.
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