Can T-Bird be tuned without computer link? - Triumph Forum: Triumph Rat Motorcycle Forums
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post #1 of 7 (permalink) Old 03-02-2019, 03:17 PM Thread Starter
Minitwins
Main Motorcycle: T-bird 2010 BluABS
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Question Can T-Bird be tuned without computer link?

I've got a 2010 T-Bird (blue) I bought new a little after I turned 60 in fall of 2009, now has 16,250 miles. When I took it to the dealer (Frederick, MD) a few years ago, to finish up the 12,000 miles service, they couldn't synch up the computer to my ECU. The dealer swapped out my ECU for one from a new bird in their showroom, but nothing changed. They thought it might be a problem with the wiring harness, but they didn't really know how to approach that.

A few years before, parked overnight on a city street far from home, someone tried to steal my gas by cutting the main hose to the tank (we both learned that gas doesn't come out without the fuel pump on). I had a dealer (Annapolis) replace the main fuel hose fixture and few other minor hoses that got cut. Now I wonder if there might have been collateral damage to the wiring harness. I've pulled the tank and eye-balled the wires, but saw nothing amiss.

The bike runs strong, never stalls, and always starts on the first or second try; it's spent no more than a dozen nights outside in its life. But it's getting to be a little big for me, so I've found a buyer on Craigslist, just banked the check, and I mentioned this issue briefly in the CL ad, but I want to know if the throttle bodies can be balanced manually? Can I sell this bike in good conscience ($5400) without making a big deal (read, big discount) of this problem. Is this a deal-breaker or not a big deal? Thank you for any advice, insights, recommendations, etc. Best regards, -j.
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post #2 of 7 (permalink) Old 03-02-2019, 07:55 PM
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You need to read a voltage to adjust the TBs. The adjustment itself s just turning a screw. You could try to connect to the ECU yourself with TuneECU, which is free. You can get a Lonelec cable on ebay. Or try a different Triumph dealer. It seems bizarre that the ECU can run the bike but that Triumph can’t talk to it.

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post #3 of 7 (permalink) Old 03-03-2019, 08:30 AM Thread Starter
Minitwins
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Question

Thank you for the info. I am reading it to say that a remedy would seem to be feasible. Perhaps that is a 60% - 80% confidence level. I'm not in a position to do the work or to make it to the dealer who is not close by. My question becomes, is it legit to sell the bike, along with providing this information? Can I confidently say that this will not make tuning the TBs impossible as the years go by? Thanks again for the info.
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post #4 of 7 (permalink) Old 03-03-2019, 02:31 PM
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As far as I know, you can’t balance the throttle bodies without accessing the ECU.
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post #5 of 7 (permalink) Old 03-04-2019, 02:33 PM Thread Starter
Minitwins
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Doug, Thank you for the update. The urgency is off, since my CL bidder turned out to be a scammer. He sent a very good-looking "cashier's check" for $1850 over the purchase price (by mistake?) and then asked for my refund of the over payment amount. The running story was very dramatic, grandchild born, grandchild lost, daughter in a coma, movers needed to come get the bike, etc. His check was bogus. I knew something was off from the start, because he didn't ask questions about the bike, just said he wanted to buy it. Anyway, now I have some time, and I just ordered the ECU interface cable, so I'll get to learn something new. I might pop up again once I get into trouble-shooting the interface. Thanks again. Best, -j.
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post #6 of 7 (permalink) Old 03-04-2019, 06:57 PM
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Bummer story. If you need help with TuneECU let me know. You can download the program for free and run it to learn how it works.
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post #7 of 7 (permalink) Old 04-28-2019, 06:43 PM Thread Starter
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Continuing adventures of the ECM not talking to the diagnostic program: I purchased the Lonelec cable from England and downloaded the TuneECU 2.5.8 from the Facebook page that has taken over the support. I hooked it up to my T-Bird yesterday. Not successful. The pop-up window log looks like this:

Initialization …
Initialization ……
Initialization …….
Initialization ...ECU connected.
Authentication … Access allowed.

Initialization …..


There is a little rectangle, flashing red, occasionally. in the lower right hand corner. Only once did I see a brief and faint flicker of orange or green when I was clicking around the menu in the "About" line.

I've been wiggling the wires around, and it seems that occasionally coincides with a red flash, but it is pretty random. A clear causal correlation is not apparent.

I figure the next step might be to do electrical continuity checks of the cable pin sockets to the ECM connections or find a dealer to do it. My question is, does it seem reasonable for me to attempt to trace back the T-Bird connector cable to the ECM and check the pins. (I've never done any serious work on the bike.) If so, should I try to remove the ECM or check it in place? Thanks. -j.
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