Cutting out at Cruise speed

[HeR3tic]

a Rather recent post addressed an ailment concerning cutting out at 2-3k RPM. The increase or decrease in throttle improved the condition: Anyone with a lead on this post? I'd appreciate it.

My Beast is coughing and farting likewise in the lower 2k range. I'm looking for the post to see if any resolution were found. I had remarked that my throttle bodies were needing balancing. Now I can't seem to find the thread. Help!

 

[mjbell1]

Cutting Out

I had that problem, 2-3k cutting out. Tracked down to loose coil wires leads
a quick crimp fixed it, no problem since.

 

[bigern2300]

Yep, Check the 12v power connectors to the coils. They have a way of getting crammed full of grime and working themselves loose. If you can catch the bike missing at idle, jack the fuel tank up and wiggle the 12volt coil power wires while it's running and most likely, you can make the miss come and go.
Bigern

 

[HeR3tic]

I've put my foot down, softly "The honey-do list will have sit on the back burner till I get my periodic maintenance up to date, dammit!"

I've been meaning to put some di-electric on many of the connectors for quite some time. This will have to be the time. What is that compound that is more suitable for higher temperature applications??

 

[bigern2300]

I've never seen a dielectric grease that has different tempeture ratings or classifications (or maybe i've just never noticed). Maybe you are thinking about antisieze which does come in a couple of tempeture protection ratings. Bigern

 

[HeR3tic]

I applied some petroleum jelly to the contacts, I couldn't find the di-electric compound; though I've now gotten a resupply I've yet to use it. In the mean time: The end results were almost a total elimination of the inclination to stalling/cutting out. At cruise speed it is totally gone and idle is smooth as silk, so far.

I loaded the 20220 tune with only adjustments to correct the speedometer and top speed. Now at low speed maneuvering I've gained a missed cylinder hit and on decel the pop fart is far greater than originally (before TuneBoy). It may be the 20220 tune. Still the throttle bodies are not in sync and the TPS sensor voltage is not right. I'm inhibited with an eye sight issue to see what I'm doing in balancing the TBs and apparently I've not garnered the technique for coordinating the TuneBoy Diagnostics with tweaking the TPS sensor. No amount of TPS sensor adjustment makes for the 6.0 volt reading. At one time Pig9r laid it out in plain english but I've yet to find the detailed link.

 

[goodfellow]

Yep, Check the 12v power connectors to the coils. They have a way of getting crammed full of grime and working themselves loose. If you can catch the bike missing at idle, jack the fuel tank up and wiggle the 12volt coil power wires while it's running and most likely, you can make the miss come and go.
Bigern

Bigern,
are you talking about the blade connectors on the coils?


greg

 

[Pig9r]

Rocky- I would be surprised if you TB's are out of sync. My dealership said they have never had to sync any. Did you get readings from Tuneboy?

Here is the TPS info...http://www.r3owners.net/common-issues/2142-reset-iscv-tuneboy.html

I have a small ratchet that you can put torx bits in that works good for reaching the fastner on the TPS.

 

[HeR3tic]

Goodfellow, I applied the vaseline jelly to those 6 connectors on the coils. I pushed them on and off several times to clean up the contacts. The beast had been suffering from a faint feeling of lost power (a faint missing hit, in the same RPM range) for awhile. The definite cutting out at cruise came on suddenly and clearly preceded by the previous faint losses. Since performing this maintenance function the ailment is totally gone. And MPG is up a tad. This may be a result of the above action or the retuning with the 20220; I'll never know.

Pig9r, the TuneBoy diagnostics gave me values of 484 485 and 463. I assume that to be 48.4...46.3??? These values have been consistent for quite some time. I believe that difference is just over 4%, just barely. If I'm not mistaken, someone (a triumph technician) here on the forum, rather recently, stated the ECM will manage up to 4% discrepancy??? Since loading the 20220 tune [basic tune(with speedo and top end adjusted] I've gotten a significant increase in decel popping. I may apply the decel mod to this tune before trying to run a previous era base tune with the decel mod add-on. I've not had much success with earlier tunes and the latest TB versions. I'm not sure it's not operator error.

Thanks B, for the link to the TPS adjustment instructions. The TPS voltage has been out of whack for as long as I've had the TuneBoy in hand, to check it. Which has been almost as long as I've had the Rocket. Coincidentally, fuel mileage dropped from 39 to 34 very very early in our relationship (it was no fault of loading enhanced tunes via TuneBoy). I attribute the very early on drop in MPG to the change in the TPS voltage. Is this likely???

 

[Pig9r]

I attribute the very early on drop in MPG to the change in the TPS voltage. Is this likely???

I'm not a mechanic but I don't think that would influence MPG, I think you just got a little more accustomed to the power.