Street Triple Issues

Here's a video of part of my problem.

[Youtube]8E1xfoLF8eA[/Youtube]

I start the bike and usually wait for it to get warmed up, which only takes a few minutes. Then, last week, the above started happening. While the RPMs are increasing and then dropping, the temp gauge is also not working. You'll notice in the video I let the bike run and the temp gauge doesn't move. I turn the bike off and on again and the gauge jumps to where it should have been and the idle smooths out.

Oddly, after I stopped filming, I watched the temp gauge go down to one bar. Turned off the bike, restarted, all was well.

I'm also thinking another issue I had is tied to this.

Riding to work last Tuesday, I pulled to the side of the road for a rider who was broke down. When I go to start my bike, she struggles a bit before turning over. I thought it was odd but figured it might be time for a new battery.

Not more than 15 minutes later I stop at my morning corner store spot and as I go to leave, encounter the same issue. Except this time it's a few minutes of not being able to get the bike started. No gas light on, I even open the cap and check inside. Then, after a few minutes I trying/waiting, the bike starts. I was quite confused and reverted back to dirtbike mentality leaning the bike over to get gas to the petcock. But, the petcock is at the bottom from of the tank on these bikes. So my efforts were in vein.

I also forget the kickstand is down at one point when it won't do anything.

[youtube]VJd77IT6_T8[/youtube]

I brought it to work, threw it on a charger and it's been working fine. I've had no issues since then, but I've carried along a charger with me.

So, what say you? I'm hopefully going to bring it in for a valve check this weekend, as it's over due at 27k. And I'll be picking up a new battery, as I think the one in their is the OEM one.



Update

It turns out the issue was the Coolant Temperature Sensor.

http://www.bikebandit.com/search?q=1392117

Hopefully that link stays. But on Bikebandit it is part # 1392117.

Part was $56 shipped and about $200 installed. I had lawrence from LG Moto in Richmond do it. It's likely something I could have done on my own. But had I messed anything up, I couldn't afford to replace it.

It involves removing the airbox and throttle bodies to access the sensor.

This was the first one Lawrence had ever done. So if you have this issue, he now has first hand experience with it.

It's mad at you because you haven't found a new bolt for that tank mount.

EDIT...actually at first I was just being a smart ass. It's a long shot but could the tank be rubbing on something under it? It looks like it cracked over to the right a little based on the hole not being lined up with the tank mount.

angelsndevils said:

It's mad at you because you haven't found a new bolt for that tank mount.

EDIT...actually at first I was just being a smart ass. It's a long shot but could the tank be rubbing on something under it? It looks like it cracked over to the right a little based on the hole not being lined up with the tank mount.

Click to expand...

Hahaha. This is what I get for helping people! Jenn, from BARF, ran out of gas on the side if the highway. I happened by and attempted to get gas out of my petcock. I ended up losing 1 bolt and 2 washers to the side of the road!

While the tank is on jankily, it really doesn't move at all. I've checked the battery terminals and all the connections under there. Maybe I'll give it another look. Considering it's only one bolt to check, it'll be pretty damn easy.

Have you checked coolant levels? I'm not sure how it is on STRs, but some other bikes have the temp sensors in odd locations to where if you're low on coolant, it won't touch the sensor and you'll get an inaccurate reading.

Hybridchemistry said:

Have you checked coolant levels? I'm not sure how it is on STRs, but some other bikes have the temp sensors in odd locations to where if you're low on coolant, it won't touch the sensor and you'll get an inaccurate reading.

Click to expand...

Hmm, good call. Haven't checked coolant levels!

The issue is intermittent, so I am not sure this was the fix.

I have TuneECU and will see if I can run a diagnostic and if that yields any results.

Checked coolant level and it was low.

I topped it off with some water for now. Come this weekend I'll flush the system and new coolant will be added.

it could be a bad battery (most likely) or your charging system (reg/rec and or stator). I'd run some voltage tests with a multimeter to see if your reg/rec is producing the correct voltage into your batteries.

I have no idea about the idle surge and temp gauge, but my STR was having random starting issues before the reg/rect was replaced under recall (free of charge). The only other issue I have had was with the 675 triple was a sticky exhaust valve (on my Daytona 675). Learned how to adjust/clean and didnt have any more issues. The triples have been my daily/primary source of transportation since 2007 and as reliable as any bike I have owned.. At 27k miles.. I'd expect a bit of maintenance. I'm following this thread and will be curious what you and or Munroe finds as the issue.

Karbon said:

it could be a bad battery (most likely) or your charging system (reg/rec and or stator). I'd run some voltage tests with a multimeter to see if your reg/rec is producing the correct voltage into your batteries.

Click to expand...

I've thought about the reg/rec stator and need to check with Munroe and see if it's been done on this bike. I know there was a recall for my model year.

I'll have to take my multimeter home from work this weekend and add it to my list of things to check.

OaklandF4i said:

I have no idea about the idle surge and temp gauge, but my STR was having random starting issues before the reg/rect was replaced under recall (free of charge). The only other issue I have had was with the 675 triple was a sticky exhaust valve (on my Daytona 675). Learned how to adjust/clean and didnt have any more issues. The triples have been my daily/primary source of transportation since 2007 and as reliable as any bike I have owned.. At 27k miles.. I'd expect a bit of maintenance. I'm following this thread and will be curious what you and or Munroe finds as the issue.

Click to expand...

I likely will not be bringing it to Munroe for service. I'm sure they know their shit, but they're also fucking expensive. Most of the work on this bike I'm willing to do myself. Though some I don't have the free time for.

Sounds like a charging system issue. Battery,stator,rectifier or wires in between. Clearly a electrical issue versus mechanical. If you buy a new battery that could masked a failing charging system for XX amount of miles. The wavy RPMs could be due to a lack of clean firing spark plugs because the bike is purely running on a low battery

The STR's and Daytonas are notorious for charging system issues. I replaced my R/R and stator on mine around 32k. It was experiencing the same issues you're having.

Called Munroe and my bike is do for a new stator. They're submitting warranty paperwork and I should be able to get it done by the weekend.

Hyped! Hopefully this fixes the issue.

yay!!! arty

RightCoastBias said:

Called Munroe and my bike is do for a new stator. They're submitting warranty paperwork and I should be able to get it done by the weekend.

Hyped! Hopefully this fixes the issue.

Click to expand...

Glad to hear it!

Here's a video of the starting issue I had last Tuesday (9/2).

I was quite confused and reverted back to dirtbike mentality leaning the bike over to get gas to the petcock. But, the petcock is at the bottom from of the tank on these bikes. So my efforts were in vein.

I also forget the kickstand is down at one point when it won't do anything.

I'll update the OP with the video as well. Should the stator replacement fix the issue, hopefully this thread will be helpful to others with the same issue.

[youtube]VJd77IT6_T8[/youtube]

Have you been able/tried bump starting it?
It sounds like it's got plenty of power from the battery to crank things over, and it sounds like it runs once it's up and going. Is this possibly a fuel issue?

Hybridchemistry said:

Have you been able/tried bump starting it?
It sounds like it's got plenty of power from the battery to crank things over, and it sounds like it runs once it's up and going. Is this possibly a fuel issue?

Click to expand...

Haven't had the need to bump start it yet. I was about to when I rolled it forward next to the parkade, but then it started.

I suppose it could be a fuel issue. I know when valves are way out of spec, it can cause starting issues. Which is why I was thinking of getting them checked. I had enough gas in the tank that I don't believe it was a petcock issue.

Since the bike is up for a new stator free of charge, I'm going to get that done and test my battery/replace if needed. If the problem persists, I'll revisit the issue.

RightCoastBias said:

Called Munroe and my bike is do for a new stator. They're submitting warranty paperwork and I should be able to get it done by the weekend.

Hyped! Hopefully this fixes the issue.

Click to expand...

Cool. Once you do get the stator warrantied and in place, I'd imagine they would do a test to see if the r/r is charging. At that point you can go from there.

If it needs a new one and you're DIY, this is the one I went with.
http://www.ebay.com/itm/SHINDENGEN-...Parts_Accessories&hash=item58a3c15b45&vxp=mtr

Had more issues yesterday.

Took the day off to run some errands and stop by Addiction to say Hi to galen. I intended to get out of there quickly and ride north until I got bored or had to start coming back.

Ended up there till 12:30, as Dave Moss helped tune my suspension, which turned out great.

I was eager to hit the road and see what dave had done. Dave did an amazing job, but my bike's issues reared their ugly heads. I turned on to Marshall-Peteluma road and noticed my coolant temp bars dropping. With that, my idle began surging up to 3k, then it would slowly work it self down. I have a video, which I'll edit/upload once I get to work.

Because of that, I decided to cut my ride short, hit 1 in Marshall and make my way back to Addiction.

Ted, at addiction, suggested it could be a coolant temp sensor. We talked through what I was experiencing and he actually got to see it himself because of some errands I was running for them. I still haven't heard back from Munroe on the stator, go figure, but I really don't think it's the issue.

After a quick search I found a archived thread on triumph675.net that seems to confirm what Ted suggested. I'm going to go ahead and order the coolant sensor and see if I can replace it this week.

http://www.triumph675.net/forum/archive/index.php/t-24680.html

Here's the video;

[youtube]ekXcWXDxhlk[/youtube]

At least the view was pretty.