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Cal Vintage ECU Problems

boptone1

boptone1

Tuned and Synch'ed
Joined
Nov 1, 2008
Messages
32
Wondering if anyone else has had problems with the Cal Vintage ECU. After 7 mos of trying to get this bike to run right, the dealer and I figured out that the ECU was bad. Talking to Guzzi didn't instill confidence that a new Cal Vintage ECU (closed loop - 02 sensor) would solve the issue. We installed a new Titanium ECU and the bike runs great.

Has anyone had any issues like this - or any other problems?
 
I know we talked about this direct, but the Vintage shares the same ECU type with the Breva 750, and handfuls of other partial closed-loop Guzzis, that were sold around the World (outside of the U.S.) for the last handfuls of years... with little to no issues that I have heard of, so I suspect yours to be a fairly isolated case. Interesting that a Hydra-Cali ECU worked just fine.

The next gen Power Commander, which is designed to handle all partial closed loop Guzzis, in the very near future. ;)
 
Symptoms: When the ignition key goes ON sometimes (average of once every 20 times) the fuel pump doesn’t go ON therefore there is no start.
Troubleshooting: On one occasion that it happened the following was tested:
- Fuel pump tested OK when 12v was applied directly to it.
- Cranking the start engine the ignition on the sparkplug was absent (no electrical power)
- Relay Ignition/Fuel pump/ECU – Power OK on both sides
- Circuit breaker Ignition/Fuel pump/ECU – Power OK on both sides
- Electric power on the ECU plug – OK
- A little tapping on the ECU and everything runs OK
- The problem only occurs during start-up. Once the engine is running there is no problem whatsoever
Sum-up: Problem of bad connection inside the ECU.

The ECU will be replaced on guarantee sometime this month (I hope!!!)

Has this ECU problem ever happened to anybody else?
 
Re: Re:Cal Vintage ECU Problems

JMVintage said:
Symptoms: When the ignition key goes ON sometimes (average of once every 20 times) the fuel pump doesn’t go ON therefore there is no start.
Troubleshooting: On one occasion that it happened the following was tested:
- Fuel pump tested OK when 12v was applied directly to it.
- Cranking the start engine the ignition on the sparkplug was absent (no electrical power)
- Relay Ignition/Fuel pump/ECU – Power OK on both sides
- Circuit breaker Ignition/Fuel pump/ECU – Power OK on both sides
- Electric power on the ECU plug – OK
- A little tapping on the ECU and everything runs OK
- The problem only occurs during start-up. Once the engine is running there is no problem whatsoever
Sum-up: Problem of bad connection inside the ECU.

The ECU will be replaced on guarantee sometime this month (I hope!!!)

Has this ECU problem ever happened to anybody else?
Click to expand...


Have the dealer watch how the throttle acceleration looks on the computer. Mine was quite jagged and jerky. It has to be smooth. We really don't know if this was due to the 02 sensor or if it was a bad ECU. We just swapped her out and didn't mess around.
 
Thanks boptone1,
The ECU was replaced and since then the bike runs perfect!
Cheers,
Joao
 
JM vintage

Yours is the second I know of to go bad on a Vintage. The first was Jim DeGregoria'a (MGNOC FL rep) bike. Though ECUs don't fail often, at least they follow the normal bathtub curve for electronics. That is fairly high failure rate when new, then very low failures for a long time, then increased failures near the end of service life. When you plot the rate over time, it resembles the shape of a bath tub. The only other ECU failure I have seen was on a high mileage (over 150K miles) Jackal.
 
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