EC Issues

[geoff in almonte]

Hi Folks

The bike is a new-to-me 2008 California Vintage.

ECU Issue is:

PO 0210 ECU Malfunction.

Our local dealer says the cure is to replace the ECU.  A new ECU is $450CDN plus installation.

The bike runs OK, but - the idle is inconsistant and high.  The bike backfires on deceleration (downshifting, etc) with some lighter flatulance on a light, trailing throttle.  Acceleration is lazy.

What are my options?

Thx for your help.

G

[Kiwi_Roy]

The fact that the bike runs says it's not the ECU
Have you set the TPS and balanced the throttle bodies?

Sorry I'm not familiar with the 0210 code, how/where are you reading that?

[beetle]

P0210 in standard OBD2 is an injector circuit malfunction. Check your wiring to the injectors, injector function and maybe reseat the ECU connector.

[Chuck in Indiana]

Our local dealer says the cure is to replace the ECU.

 

[guzzista]

Maybe you can contact Todd @ Guzzitech and he can reflash your ECU? . some folks have had theirs reflashed and the bikes are running  better as a result. If yours is not a goner due to internal failure it could be the best solution a for less $...Good luck

[beetle]

When ECU's fail, him bike no go. It's not the ECU and it doesn't need a reflash. It's reporting a genuine fault. Ergo, fault needs to be fixed.

[geoff in almonte]

Hi All

Thx for the responses.

The throttle bodies were sync'ed recently.  Not sure about the TPS - the bike starts and idles fine cold (1100rpm) but the idle increases to  14-1500rpm when the engine is warm.

Our local dealer is new to Guzzis.  He is a multi brand dealer so his focus is more on the sellers - Victory, KTM, Suzuki, etc.  His Guzzi wrench didnt inspire confidence.   He had no idea what the error message was pointing to as the fault.  The next closest dealer is in Toronto (250 miles away) - he sold the bike to the PO and has a longstanding relationship with him - the jury is still out on his professionalism - he's a nice guy, but a bit of a snake oil salesman   

I agree with Beetle - I think it's a fueling issue - all the symptoms point to an overly lean running setup.  I will check the wiring as he recommends and report back.  The PO also replaced the cat con with a GuzziTech H-pipe - could the wiring from the O2 sensor have this impact?

Almost everything else the PO touched has needed to be revisited.

I have contacted Todd at GuzziTech.  He just happens to have a reflashed ECU for my machine on the shelf ($500USD).  But replacing the ECU aint gonna fix the problem if it is injector related.

I may not get out to the garage for a day or two - I'm still recovering from the Aderondack Rally and it's hotter than stink here (32C).

Beetle - any other things that should be checked out?

Many thanx for the responses - this forum is wonderful!

Cheers!

G

[beetle]

Are there any other DTC's occurring?

I'm not familiar with the GT h-pipe. Does it eliminate the O2 sensor bung, and therefore, the sensor?

The ECU fires the injector by switching it to ground. You should check the ground connection on the ECU is good. A bad ground there can cause all sorts of issues.

[geoff in almonte]

Are there any other DTC's occurring?

=>If you mean error codes then no.

I'm not familiar with the GT h-pipe. Does it eliminate the O2 sensor bung, and therefore, the sensor?

=>It has a 'bung' and a 'bung hole' with a sensor in it.

The ECU fires the injector by switching it to ground. You should check the ground connection on the ECU is good. A bad ground there can cause all sorts of issues.

=>I'll add checking the ECU ground to my list.  If this was a carburator I could fix it.  I am not afraid to go looking but some pics of what I am looking for would help.

Again, many thanx for your help.

G

[beetle]

An O2 sensor problem would produce a different error code. As this is bike is new to you, I'm guessing the poor running issue has been with it since you got it? Is the current error code new, or has it been there since you got it? Your revelation of the catcon removal changes the situation, and actually may require a different solution.

Still, there seems to be an injector issue, or the ECU is throwing up a furphy due to another problem. As I said, check/reseat the connectors on the injectors as well as the ECU and its ground.


Item 7 in this pic is the main ECU ground.





Now..the lean running may be due to the lack of catcon and the ECU can't compensate. In which case you will need to adjust the CO trim. That will mean turning off lambda. You will need to download the map to do that. Time to get the GuzziDiag cables and software.

[geoff in almonte]

Alrighty then - back to stock.  I have the catcon and will re-install it. 
I will also check/reset the connectors for the injectors, ECU ground and ECU.

Then I will report back.

Cheers!

G

[beetle]

Also pull the main fuses (or disconnect battery) to reset the trims.

[geoff in almonte]

Like doninos!!

I pulled the mufflers and h-pipe and attempted to refit the cat con.  Cant do that without removing the Outsider - the cc fouls on the oil filter.  So I re-assembled with the GT H-pipe making certain there were no air gaps anywhere.  Disconnected the battery and checked all connections around the ECU.  The ground was a wee bit loose - i.e. snug vs tight.  Everything looked OK to my layman's eye.

Reconnected the battery and started it up.  Idle was at 6-700 rpm cold.  I didnt get a chance for a test ride - but will when the opportunity presents itself.  A lower (unassisted) idle when cold is a good sign that something I did had an impact,

I'll report back after a test ride.

G

[geoff in almonte]

Just home from a 120km test run.  The idle is consistent at 11-1200 rpm - a tad high but bearable.  It chuffs back into the injectors at idle occasionally.  I'll run a can of injector cleaner thru it. 

Overall, the motor feels stronger - roll on from 2000 to 5000+ rpm in fourth is strong.  There was no backfire when downshifting - i.e. with the motor under load.  There was persisitent flatulance when using the motor to slow to a stop - i.e. 2nd gear, low rpm, and closed or light, trailing throttle.  If it were carburated, I would shim the needle a touch but with FI I guess I'll need to reflash or reprogram to correct that. 

I cant tell if the error message is still there - it's 2-3 weeks wait for a service appt and a $100 diagnostic fee.

All in all it's running well enough to wait until I've recovered from buying it before doing anything dramatic. 

Cheers!

G

[beetle]

Probably still a touch lean without the cat. Buy the GuzziDiag cables. $40 will allow you to reset your own error codes and do your own diagnostics. I suspect you will need to adjust the CO trim a bit to compensate for the freer flowing exhaust.

[geoff in almonte]

OK.

Where do I get the cables?  Do they have a catalog or cable identifier?

After that I'll buy a laptop - I dont think my desktop is up to the chore.

Any specific h/ware or s/ware requirements to run GuzziDialog?  Windows/PC compatible?

Is there a GuzziDialog-for-Dummies text somewhere?

I'll learn how to use GD while I'm searching for the Laf. Comp. mufflers I want to put on.

Lotsa questions, I know.  I've always been insatiably curious (and insufferably optomistic!).

Cheers!

G

[beetle]

Get cables from here: http://www.lonelec.co.uk/index.php?main_page=product_info&cPath=14&products_id=50

Or here & here:

http://www.amazon.com/gp/product/B0053NRLHE
http://www.amazon.com/gp/product/B003ZKKMLE

GuzziDiag has versions for Linux, Mac and Windoze. If you chose to go with Windoze, use these drivers: LINKY


I wrote a Howto for dummies here: CLICKY

You don't need a high end laptop. A slow cheap clunker is all that is required.