Triumph Rat Motorcycle Forums banner

1 - 8 of 8 Posts

·
Registered
Joined
·
174 Posts
Discussion Starter #1
Have just recieved the dreaded engine light and fuel light come on and stay on , after a 3 heat cycle test..stays on.Went to a dealer to check codes,first they said I had a California tune installed on a 49 state bike,changed the tune to a 49 state tune,lights still on,checked the fuel sender unit,functions but codes come up saying the sender unit is not recieving or giving out info,therefore the engine light on all the time with the fuel light!
They checked the battery , fine,and even checked with another ECU, although they couldnt get the exact ECU for my bike,said the other ECU took care of all the lights staying on,in other words my ECU likely has some corrosion or faults to it either caused by moisture.....or some gremlin.
Can you get the ECU fixed (trace the fault and correct it) or must it be replaced?? its $1700.00 to replace(damn),if it can be fixed , does a triumph tech fix it or must it be a computer person?
 

·
Registered
Joined
·
295 Posts
If they didn't have the right ecu to try it with, it probably means that theirs won't show or read any problems you have with your bike due to different programming. The only sure way is to swap yours with one that is exactly the same. I'm not saying it's not your ECU, but it sounds like a scam to get you to dish out big bucks.

I would be checking everything from wiring to vacuum hoses to the various sensors on your bike before taking it back to the dealer.

Btw, do you notice any problems with the way your bike runs? There have been problems with the hose inside the tank being crimped on certain bikes, or maybe the sending unit or fuel level indicator may be pooched.

One last thing to try is to swap a couple relays around and see if that helps.
 

·
Super Moderator
Joined
·
21,183 Posts
What year is your bike please (can you amend your UserCP to include that info under 'favourite bike' so anyone responding to questions can immediately relate?)

Fuel level Senders are notorious on these bikes - if that is what the code is saying, that's probably what it is.
I can give you a resistor value (that you can get at Radioshack for pennies) that will tell you if problem is sender or ECM - need your year though.

Incidentally there is no "CA" and 49-state tunes - there is SAI & non-SAI but either would work, unless you have SAI tune installed in a non-SAI bike (or it's been removed), then you would get an MIL for that

Describe some features of your bike -
does it have SAI? (three hoses coming off the front of cam covers, or just blaning plates?)
does it have emissions carbon canister (located in the 'trunk')

SAI does not make it CA model, but carbon canister does - there is NO special tune for CA carbon canister

These ECMs are pretty bullet-proof - failures are EXTREMELY rare.

I think your dealer is clueless personally! I wouldn't have changed the tune - especially since it seems your bike was working without an MIL until it appeared recently (if I follow your description of events)
 

·
Registered
Joined
·
174 Posts
Discussion Starter #4
Sorry,forgot that rather bit of important info, its a 2005 Daytona,no it doesnt have an emissions canister in the trunk,bought the bike new in PA, lived in NC and now moved to CA. The dealer told me it had a CA tune(for emissions purposes in this state of CA)and as it was a 49 state bike , didn't actually need that particular tune so they apparently put a 49 state tune back in the bike , running fine except for the check engine light and fuel light on all the time.As for the 3 hoses , I will look tomorrow and let you know.
The bike was running fine for three years, until 2 weeks ago....?kind of why I believed them when they mentioned the ECM getting some moisture or corrosion in it,they said they checked the fuel sender unit and it was fine, just not sending or receiving info from or to the ECM,therefore the ECM was giving the check engine light as a result.
As you may have noticed , i get bye with minimum mechanical knowledge, but not to clued up on the stickier things... appreciate all your insight btw.
The tune number in there now is 10178-49 state tune(that info from dealer)
and S1000 model ECM(also from dealer),if thats any help..
 

·
Super Moderator
Joined
·
21,183 Posts
...
The tune number in there now is 10178-49 state tune(that info from dealer)....
Once again - there is NO CA or 49-state tune - they are talking rubbish.

10178 is the std Daytona tune for a non-SAI bike.
SAI is NOT the same as California emissions - CA emissions have no tune sensitive components, purely passive.

Go to your local Radio Shack & get one of these - take one of the two from the twin-pack & unplug the sender from under the tank, and push one lead from each end of the resistor into the connector plug that goes back into the main wire harness (not the ones that goes back to the tank).

Test it again & see if your low fuel light (& also your MIL) go out. (make sure you have a good connection into the connector)

If it does, replace the low fuel sender - and get a new dealer.

Good luck!
 

·
Registered
Joined
·
174 Posts
Discussion Starter #7
Well,heres the deal .The dealer finally came around to doing some work, checked old sender unit , replaced with a new one, problem still there , then hooked up a ground wire to ECu, problem still there, finally Triumph sent a new ECU, installed it and problem still there...now they say sorry we dont know whats wrong, me either. Diagnostic Trouble code is P0463:Fuel sensor circuit high input.The fuel light comes and goes all the time and engine light on constantly.Help me please.
 

·
Super Moderator
Joined
·
21,183 Posts
Find another dealer - these people are idiots and have no clue what they are doing.

If you have a fuel level sender fault you WILL have an engine light code.

Do the resistor check I told you about - oh - get your old ECM back & tell them to keep theirs - I sure hope you're not paying for that replacement that fixed nothing!

You either have:

a bad sender
Bad wiring between the sender and ECM

It is relatively simple to diagnose & resolve which of those two it is.

Ignore the check engine light for now - that is going to be a red herring for you, because as long as you have the priniciple fault, it will continue to be there and remain for three heat cycles even after the problem is resolved.

So focus on the source of the problem, whether or not your low fuel light is working.

Only after you get the low-fuel light resolved, worry about then doing three heat cycles to get rid of the MIL light.

So - unplug the fuel sender, get the resistor and plug it into the connector for the fuel level sender - the one that goes back to the harness, not the sender itself

If the light goes out, then you have a bad fuel sender.

If the light stays on, then you have a bad connection between your harness plug and the ECM - you will need to trace that out with a multimeter.

Do the resistor check first and if light stays on, then we'll cross that bridge & I will give you more specific instructions on where to go from there.


Incidentally you never did identify whether bike had SAI or not. (forget this CA or non-CA rubbish - there is SAI and non-SAI - CA emissions are something completely different and irrelevant to type of tune)
SAI - secondary air injection - is easy to determine - at the front of your valve cover, if it has three hoses coming off the front that go to an electric valve, then another hose from there to the front of airbox - then it has SAI.
If it does not have that equipment it is not SAI.
 
1 - 8 of 8 Posts
Top