Thread: Crankshaft Position Sensor?
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Old Jun 7, 2013 | 06:19 PM
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onehundred80
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From: Ontario
Default Re: Crankshaft Position Sensor?
Originally Posted by Selbyl
Just wanted to update this thread, since I hate seeing dead threads with no answer in the end.

So it finally hit me last week that his was a Relay Control Module issue. Last week I turned off my car and the secondary air injection pump was still spinning really loudly and I didn't think anything of it at first but a few minutes later it was still going (I thought it was the radiator fan at first). So the fact that the pump was still on after the car was off tells me it's the RCM issue. I haven't gotten around to resoldering it yet, the main three points at the bottom look fine. I plugged the RCM back in and the car ran perfect for 2 days, yesterday it acted up a bit. I unplugged the RCM for a second and once again it is running fine.
The trouble you have is probably the contacts of the fan relay, they are sticking together, look at them you could see that they are black and burnt. If not then something else is keeping the fan going for too long. The fan relay needs to be energized for the fan to operate normally, a sticky relay or an errant signal will make it run when it should not. Run the fan for too long and it will get ruined, no big deal unless you need a pollution test.

You may have other problems that may be solved with the re-soldering of the three joints.
 
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