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Old 03-24-2010, 10:58 AM   #1
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Random Plug

After replacing the thermostat yesterday I started checking over everything to make sure fluids were in line and things like that. While browsing around I found a random plug over the oil filter that seems to have been undone for quite some time now (covered in grime and such). I cleaned it off and plugged it back in but I am still curious as to what it is.

Stepdad claims it is a oil pressure sensor but that doesn't seem to make sense to me since I have never had a misread on the oil pressure or any problems come up other than the thermostat going out (totally unrelated).

Probably not a big deal but I'm just curious as to what it is...
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Old 03-24-2010, 11:08 AM   #2
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It's not for the oil pressure sender, but I don't have a clue what it's for. My '97 didn't have any plug like that there.

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Old 03-24-2010, 11:13 AM   #3
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Yeah even some of the diagrams for the 4.0 didn't even have it pictured. Even Google didn't have the answer


Oh it's a 2002 if that helps, forgot to list that the first time.
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Old 03-24-2010, 11:16 AM   #4
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From that shiny bracket, it looks like an aftermarket job to me.
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Old 03-24-2010, 11:22 AM   #5
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That could possibly be it. I do remember having a random wire hanging from the dash that a past owner used for a security system. There is also a "Bulldog Alarm" sticker in the back glass of the hardtop. Don't see what purpose it would pose for a security system though.
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Old 03-24-2010, 11:23 AM   #6
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It could have been for something like a starter interlock.

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