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Noah930's Avatar
 
Join Date: May 2005
Location: Los Angeles
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What's this wire?

I took off the intercooler on my stock US '87 930 to change the fuel filter as part of routine maintenance. Down between the fuel filter and motor (on driver's side of engine compartment), I found a disconnected electrical connection, 3-prong (2 male/1 female, or vice versa depending on your perspective). Where does this go/come from? What does it do? Other than an episodic rough cold start, the car runs just fine.

The disconnected connector:


Where it goes. It disappears down and forward. Note the other end of it (what it should be connected to) on the left, pointing downwards:


Close up of picture #2, above. Essentially same view:


Reconnected. The other end emanates from the mass of wires under the fuel filter area. You can see it peeking out from between the hose clamp and Phillips bolt in front of my fingertip:


Addendum: The 2 times I've started the car up since reconnecting the wire (and replacing the intercooler), no rough cold start. Not wanting to alter too many variables at the same time, I did not wind up changing the fuel filter.
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1987 Venetian Blue (really looks like grey) 930 Coupe

Last edited by Noah930; 08-22-2007 at 09:47 AM..
Old 08-22-2007, 09:39 AM
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Oxygen sensor
Old 08-22-2007, 09:57 AM
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Join Date: Oct 2005
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Yes, what kellkats said, O2 sensor.

Oh the humanity, an air injection pump!!! Ridding my engine of this heavy and useless bull***** was one of the best things I ever did!!!! DUMP IT!

Yeah, yeah, I know, smog inspection...
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back in the saddle: '95 993 - just another black C2
*SOLD*: '87 930 GP White - heroin would have been a cheaper addiction...
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Last edited by sand_man; 08-22-2007 at 11:47 AM..
Old 08-22-2007, 11:45 AM
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I think if you can get past a visual inspection, you can tune the engine into passing smog inspection.
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-jeff
back in the saddle: '95 993 - just another black C2
*SOLD*: '87 930 GP White - heroin would have been a cheaper addiction...
"Ladies and Gentlemen, from Boston Massachusetts, we are Morphine, at your service..." - Mark Sandman (RIP)
Old 08-22-2007, 11:48 AM
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As I look again, the pump looks like it's missing a hose connection, so it must be non-functioning and/or partially disconnected?
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-jeff
back in the saddle: '95 993 - just another black C2
*SOLD*: '87 930 GP White - heroin would have been a cheaper addiction...
"Ladies and Gentlemen, from Boston Massachusetts, we are Morphine, at your service..." - Mark Sandman (RIP)
Old 08-22-2007, 11:59 AM
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I bet there is no belt on it either
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Old 08-22-2007, 12:06 PM
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Yeah that air pump is a joke. The pulley is probably too worn to hold a belt anyhow. Then get rid of the air injection lines and plug the holes.
Old 08-22-2007, 02:38 PM
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Like DSP mentions, I can't see/feel any belt connected to the air pump's frontside. Hence, do I need to block off that open orifice, as seen in my 2nd and 3rd pictures?

What's the practical consequence (functionally) of not running the air pump? Obviously it's not connected/running. I certainly don't feel any detriment to the running of the car/motor.

Also, what's the practical consequence of having a disconnected O2 sensor? The car's been running with that thing dangling apart, and I wouldn't have noticed it unless for monkeying around the engine compartment.
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Old 08-24-2007, 01:54 PM
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02 sensor must be common for unplugging itself, I aslo found the same problem a couple of months ago..
Old 08-24-2007, 03:11 PM
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