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Old 05-10-2018, 11:44 PM   #5
hatzie
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Join Date: Oct 2008
Location: Wentworth, NH
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Re: What is the green with black stripe wire under the hood.

HPCO, if present is an owner/builder add on.
LPCO is on the accumulator. Solid green wires.
THe above run to the AC compressor.

The only GREEN/Black under the hood in 1987 is one of four wires to the IAC. Specifically Circuit 444 from the ECU to IAC stepper coil B...

Are you sure it has a black tracer stripe and it's not just filth?
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RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials...Please include at least the year and model in your threads. It'll be easier to answer your questions.
And please let us know if and how your repairs were successful.
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