How to check Alfa 164 Engine ECU for codes - Alfa Romeo Bulletin Board & Forums
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post #1 of 7 (permalink) Old 06-28-2010, 05:03 AM Thread Starter
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How to check Alfa 164 Engine ECU for codes

91-93 12v V6 procedure: Alfa 164 Motronic Self-Diagnosis

94-95 24v V6 procedure: Alfa 164 Motronic M1.7 Self-Diagnosis

Ciao, Alfisto Steve
Virginia Beach, VA
AROC 164 Tech Advisor

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Alfa Semi-Daily driver: USA model - BB2 1991 164S Black Beauty II ALFISTO [U]

[U] BB1 1991 164L w/S engine and A/T now excess to inventory [U]

Daily driver and parts hauler but not car hauler 2004 Jeep Grand Cherokee Overland 4.7L H.O. V-8

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post #2 of 7 (permalink) Old 07-18-2019, 01:41 PM
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Bummer, these links don't work.

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But wait there's more: View my 164LS thread:
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You're kidding, another one?! 1984 GTV6 Maratona
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You didn't...oh yes I did. '73 Berlina graduate course in rust repair. No thread yet, don't want to piss off the GTV

You didn't...oh yes I did II. 1995 164LS 5 speed, awesome when it runs!!!

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post #3 of 7 (permalink) Old 07-18-2019, 01:57 PM
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for 24V car, turn ign key to RUN, then stomp down hard, all the way to the floor, the accel pedal 5 times in 4 seconds. Watch the the Check engine light. It will flash a code in groups of three

74 GTV with 10548's and Ingram pump
71 Spider 1750 BOMBER ; 1995 LS 78K tight fast car
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post #4 of 7 (permalink) Old 07-18-2019, 02:51 PM
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Originally Posted by goats View Post
for 24V car, turn ign key to RUN, then stomp down hard, all the way to the floor, the accel pedal 5 times in 4 seconds. Watch the the Check engine light. It will flash a code in groups of three
Yes and be prepared for very funny looks from anyone who sees your "weird" behavior...
.have a pen and paper handy .. knowing Morse code might help.

164LS 1994
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post #5 of 7 (permalink) Old 07-18-2019, 02:58 PM
Del
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I've described the procedure in a previous post, Bob.

"you turn the key to the run position without starting the car, and then push the gas pedal to the floor five times quickly, in less than ~5 secs. The check engine light will start flashing.

FIRST, it will flash just once. THEN, it will start to flash the code. Then it will flash just once more before it starts the routine again".

The code will be four digits, ie, one flash=1, two quick flashes=2, etc.

I'm looking for something like 1221, hopefully.
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Del

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1989 Milano, Shankle Sport
1991 164S, stock
1994 164LS (~Q)
1972 Morgan 27

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

Last edited by Del; 07-18-2019 at 03:05 PM.
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post #6 of 7 (permalink) Old 07-18-2019, 03:05 PM
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I did find a video of someone following the procedure on a 155. I was just trying to figure out where to look for the flashing code.

One can never have enough information. Although I've been accused of overthinking instead of just doing...old habits die hard.

Everyday is a school day. Learning something new all the time

View my '74 GTV restoration at:
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View my '91 164s adventure at:
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But wait there's more: View my 164LS thread:
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You're kidding, another one?! 1984 GTV6 Maratona
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You didn't...oh yes I did. '73 Berlina graduate course in rust repair. No thread yet, don't want to piss off the GTV

You didn't...oh yes I did II. 1995 164LS 5 speed, awesome when it runs!!!

Musings on shop related items:
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post #7 of 7 (permalink) Old 07-18-2019, 03:07 PM
Del
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You will be ok, I'm sure. You don't have the workshop manual?

Del

Seattle

1989 Milano, Shankle Sport
1991 164S, stock
1994 164LS (~Q)
1972 Morgan 27

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

Last edited by Del; 07-18-2019 at 03:10 PM.
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