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Old 03-26-2011, 09:02 PM   #1
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Default Crank Sensor and Harness question

so my 96 SC Bonnie, 140k miles, has been throwing the Crank Sensor (P0336 if I recall correctly) code intermittently for a few months now, and last week it died at a stoplight and took several minutes to restart. The local mechanic said it'* a bad harness due coolant contamination (I fixed that with a new radiator last year), but also recommends a new cam and crank sensor.
Question is: do you guys recommend a new cam and crank sensor when the harness is replaced? can a short-ing harness cause the sensors to "go bad"? Any input would be appreciated.

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Old 03-26-2011, 09:26 PM   #2
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Unless coolant got in and corroded the connections, I see no reason to change both sensors along with the harness. Unless he can show damage to the harness I see no reason to change it. However the crank sensor may be going out considering it'* throwing a code. The plug to the crank sensor is sealed with a rubber seal, and is generally covered with oil and grim, and this tends to keep moisture out.
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Old 03-27-2011, 08:57 PM   #3
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I think it'* the harness, as he took it off and ohmed it out and it was intermittent. that'* the source of the code (PCM doesn't know if it'* a bad harness or bad sensor). he recommended the sensors too, and that'* the reason for my question.
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Old 03-27-2011, 08:58 PM   #4
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The harness is not that hard to replace. I think I have like 3 of them if you need one.
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Old 03-28-2011, 09:07 AM   #5
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Typically it'* like Dan said. Sensor goes bad the harness is ok. Since he tested it and it showes as bad.. swap it and the crank sensor only.

Cam sensor shouldn't need to be done.
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Old 04-05-2011, 07:21 PM   #6
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new harness didn't do it, so I had to do the crank sensor too.
Now she accelerates quicker and idles much smoother than before the sensor swap.
Thanks for the help. (now on to LIM and UIM gaskets!).
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Old 04-06-2011, 08:18 AM   #7
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Glad to help out...

Next time tell him to make better connections, when he wiggled it must have lost it'* connection.
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