164 V-6 wiring connections to find

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scooper164v12
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Joined: Mon Jul 20, 2015 12:49 am

164 V-6 wiring connections to find

Post by scooper164v12 » Sat Aug 01, 2015 12:28 am

Hi
Would anyone please be able to check where these wires connect roughly above the gearbox/ at the rear of the motor as in photo.
Especially the earth strap.
Thanks for helping,
Regards
scooper164v12
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wilco
3.0 V6 24V owner
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Joined: Wed Oct 14, 2009 7:26 pm

Re: 164 V-6 wiring connections to find

Post by wilco » Sat Apr 30, 2016 1:52 pm

earh strap goes from gearbox to the inside of the bonnet behind the coolant reservoir
Henry Ford, 1939: "Every time I see an Alfa Romeo pass by, I lift my hat."
--Alfa Romeo 164 3.0 V6 24V Q4--
--Alfa Romeo 164 3.0 V6 24V--

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pinino
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Joined: Sat Jun 08, 2013 3:42 pm
Location: New York

Re: 164 V-6 wiring connections to find

Post by pinino » Sun May 01, 2016 1:05 am

On my car (US 1992 164S) the earth cable is flat (not L-shaped) and bolts to boss on side of strut tower just below front of reservoir. There are also three additional cables grounded with the same bolt, TWO 2-wire with "eye" and a 1-wire with "eye". It appears from your picture that the pair of 2-wire should go with the ground strap.

The red wire with female connector looks to me like the oil pressure sender wire, and just below that there is the low oil pressure sensor, probably where the other wire (green-white) with female connector goes. By the way those two are bundled with two wires with "eye" which ground to the head.

I can't identify your last wire (brown-white), the one with the right-angle connector. To my knowledge a right-angle connector does not appear in the Alfa Electrical Poster. I wonder if it is the third (independent) wire of the O2 sensor.

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pinino
Posts: 42
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Location: New York

Re: 164 V-6 wiring connections to find

Post by pinino » Sun May 01, 2016 11:00 pm

Come to think of it, the 3rd independent wire of the O2 sensor usually ends with a female spade and is protected by a round dust boot. There have been reports of a dangling brown-green(?) wire in the starter area—hot when car is running—that seems to have no use. Here's one post that mentions it:

http://www.alfabb.com/bb/forums/6136073-post11.html" onclick="window.open(this.href);return false;

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