89 Civic Si w/ b18b1 map sensor keeps failing

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Old Mar 11, 2013 | 10:18 AM
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Default 89 Civic Si w/ b18b1 map sensor keeps failing

Alright I'm on my second map sensor after the first one gave out. So I bought a used one off eBay since a New one is $80, and that's a lot for one sensor. Well now here I am again with code 3 and it runs kinda shitty. Also on occasion, the sensor next to the map sensor on the intake manifold pops out. I have hard reset the ecu a couple time, and no luck. The problem started when I wrapped the wires in electrical tape to clean the wires up. Any reason why they keep going bad or stop working?
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Old Mar 13, 2013 | 10:03 AM
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Default Re: 89 Civic Si w/ b18b1 map sensor keeps failing

Anyone? I noticed today that one of the casings on of the wires had melted a bit and now some plastic seems to be in the wire. Could this cause my problem?
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Old Mar 14, 2013 | 05:56 AM
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If the problem started after you messed with the wires, have u ever thought to look at the wiring? Also, did you mess with wiring before or after replacing the original sensor?


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Old Mar 14, 2013 | 06:37 AM
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Default Re: 89 Civic Si w/ b18b1 map sensor keeps failing

Well I looked at the wires and saw that one of the casings had melted so the wire would touck the tb and short. I repaired it, and it ran fine, but now just this morning, it threw a code 3, so I will go look, but I can't imagine that the wire casing has melted again.
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Old Mar 20, 2013 | 11:39 AM
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Default Re: 89 Civic Si w/ b18b1 map sensor keeps failing

Ok I fixed and it was happy, but now its having issues again, and I don't see a melted casing? Anyone??
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