REAL fix for ARC blinking lights - Page 11 - Alfa Romeo Bulletin Board & Forums

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post #151 of 156 (permalink) Old 12-30-2016, 12:39 PM
Del
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Exactly. Our Milano Arc is not fond of cold weather, although the heater works very well, like an oven, lol. I was also going to suggest to clean the ARC connections and use dielectric grease on them.

Del

Seattle

89 Milano (wife's daily driver since 1989, Shankle Sport)
91 164S (my daily driver since 1994)
94 164LS (~Q) (trip Alfa since 2000)
72 Morgan 27 (water time since 1976)

previously owned since 1964:

62 Morris MiniMinor 850, 67 Austin 1275 Cooper S (Downton 3/4 race), 64 Giulia Sprint GT (1st red one made), 72 Fiat 128 Sedan, 75 Alfetta Sedan, 78 Alfetta Sedan, 78 GTV, 81 GTV6, 86 GTV6
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post #152 of 156 (permalink) Old 12-30-2016, 02:44 PM
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You can replace ARC unit with one from the same model and same manufacturer, year doesnt matter...

On the note of the arc brake light flashing, if its just a brake light then the pad signal is missing, and if its brake and stop light below it at the same time then its the switch at the brake pedal for brake lights...
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post #153 of 156 (permalink) Old 01-01-2017, 06:44 AM
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Quote:
Originally Posted by Del View Post
"I'm in for a vehicle inspection in a months time"

"Question is, can I use an ARC from an Alfa 75 1989 in my 1991, or does it have to be the same model/year?"

You don't say where you live so don't know the inspection requirements for your 1991 75. GB? OZ?

As far as having a warning light on that an inspector might find if the car has to be inspected (?), we put a very small piece of black electrical tape over the faulty oil level light on the ARC display. You cannot see that tape at all (attempts to bypass that broken sensor didn't work, trying different resistors). The display looks normal when the ignition switch is turned on, and our inspectors didn't look at that display anyway, not knowing what the heck it is. Removing the light may work if they don't care to see that it comes on at first as the sensor check when the key is first turned on.

Using an 89 unit in a 91, I suspect you have no choice but to try it. There is a change in the effectivity of the unit (Fiat parts eper: INTERCONNECTION AND REMOTE CONTROL SWITCH (Tab:3/3)), in 10/1990, the unit 60530317 being replaced by 60530084. Maybe they switched from the original VEGLIA model to the Borg unit for more functional stability. Maybe search for a used unit out of a parted out car, don't know about parted out 75s in other countries.

Hopefully someone else has real information, lol.

And, yes, our Milano's ARC does have the power chip improvement to generally eliminate the random flashing, but still, when it is cold out, it still has random lights come on until I restart it.
Thank's a lot Del. I think i'll try your electrical tape suggestion - hopefully they won't notice
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post #154 of 156 (permalink) Old 01-05-2017, 10:16 AM
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Del,

Cleaned the grounds at the front of the engine compartment and the positive junction in front of the washer reservoir. I don't get the flashes when cold now. Also - my tach seems to be working more consistently (used to jump around - temp based)

This system must be voltage sensitive. Improved connectivity seems to help.

84 Spider - Long gone, but started the addiction; 85 GTV6 - Current project, Supercharged, Mega Squirt; 88 Verde - "Milo" It has a name, must be a keeper
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post #155 of 156 (permalink) Old 03-15-2017, 11:45 AM
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Ha, this is my second time on this thread, the first time most of what was initially posted went right over my head... Now that I have some more electronics experience under my belt, its a f****g five minute fix! Imma do this when I go home for spring break for sure. Thanks for the initial R/D Gubi!

Miguel S. ~
89 Milano Gold (daily driver), 87 Milano Silver (track car project)
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post #156 of 156 (permalink) Old 03-15-2017, 12:18 PM
Del
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"This system must be voltage sensitive. Improved connectivity seems to help"

Yup, haven't pulled the units yet to clean the multi-connections at the back of the units, but it has warmed up and the ARC no longer acts up.

As well, have you installed the better power chip? That really makes a difference in general, whether hot or cold.

Del

Seattle

89 Milano (wife's daily driver since 1989, Shankle Sport)
91 164S (my daily driver since 1994)
94 164LS (~Q) (trip Alfa since 2000)
72 Morgan 27 (water time since 1976)

previously owned since 1964:

62 Morris MiniMinor 850, 67 Austin 1275 Cooper S (Downton 3/4 race), 64 Giulia Sprint GT (1st red one made), 72 Fiat 128 Sedan, 75 Alfetta Sedan, 78 Alfetta Sedan, 78 GTV, 81 GTV6, 86 GTV6
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