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h23a3 distributor keeps blowing sensor

 
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Old 12-01-2011, 05:29 AM
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h23a3 distributor keeps blowing sensor

firstly a bit of history. the car a honda prelude gen 4 was a f22 then i converted to a jdm h23a3 non vtec. the car is using the oem ecu with a unichip piggy back for the fueling and timing. The car ran fine for about a month then she popped the sensor in the distributor. i swapped it out with the old distributors sensor and the same thing. a month later she popped again. on the photos below you can actually see that this sensor gets so hot it actually cracks and the wiring is melted. what could this be. please help iam desperate for any info on this please.

thanks

God Bless
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File Type: jpg sensor1.jpg (81.6 KB, 8 views)
File Type: jpg sensor2.jpg (73.3 KB, 6 views)
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Old 12-01-2011, 12:18 PM
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Re: h23a3 distributor keeps blowing sensor

doesnt look like there is any oil in the distributor right?
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Old 12-01-2011, 10:13 PM
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Re: h23a3 distributor keeps blowing sensor

why didn't you get the ecu when you got the motor? maybe your piggyback is running unreliably and causing problems? unless like dizz asked is it dry inside?
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Old 12-02-2011, 12:30 PM
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Re: h23a3 distributor keeps blowing sensor

I dismantled the engine wiring harness and what is bothering me is the earth wire has gotton hot, you can see blackish marks on the one! Something is causing it to short? What could it be?
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Old 12-02-2011, 08:48 PM
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Re: h23a3 distributor keeps blowing sensor

is there oil inside the distributor? the hot oil could be causing it because ground wires dont short on anything but positive wires (well the posi melts the ground)
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Old 12-03-2011, 04:18 AM
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Re: h23a3 distributor keeps blowing sensor

I didn't notice any oil, could a loose earth connection to the chassis also do this?
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