The Brahma Drama...Aka Throttle Body Issue

[Joesmoe]

I learned years ago, always try the easy stuff first. On my 1971 Jaguar I had starting problems (turning over), so I replaced the starter. A week later, starting problems. Called a mechanic and he asked, "Did you check the starter relay ?" $12 American made part easily replaced, and I had removed a perfectly good (expensive) starter.

 

[Boog]

I have two TB sets that I have been trying to sell.

It look like I am in the market now. And you are not too far away from Northern Virginia.

The parts are indeed worn out and need replacing soon. It surges now at stoplights and I can't seem to keep it low even with pulling the lever back manually. I am guessing it is around 1200-1300 RPM at idle like they said it was on their computer.

 

[warp9.9]

It look like I am in the market now. And you are not too far away from Northern Virginia.

The parts are indeed worn out and need replacing soon. It surges now at stoplights and I can't seem to keep it low even with pulling the lever back manually. I am guessing it is around 1200-1300 RPM at idle like they said it was on their computer.

Dude by the the throttle bodies from M&M and change the whole thing do not mess around with pulling the stepper motor and hop it went away. It is just easier to do. I swapped mine all the time with the extra set. I would listen to @Pedro and heck to make sure both cables have some slop in them. If it was me I would clean all the throttle body linkages all the way down the rail if they are grimmy the throttle will not return back. Now I do not know youyr dealer so I will not say they are idiots. But I would do a full ISCV reset and check their work If it is not done right you idle could end up high or low.

Here is a picture of the TPS bolt after a Train Triumph Technician installed it. This was in Colorado

Note not all technicians are Rocks some might be pressed for time from the boss some care and some have only one more operation brain cell then a dead cow!!!!!!!!!!!
I would check thing out first before buying a new set of TB now a used set for a couple hundred bucks I would snatch it up anyway. You can never have enough rocket parts laying around especially when they are the same thru the years except some might have the old TPS which might or might not be good.

 

[Manic_Mechanic]

It look like I am in the market now. And you are not too far away from Northern Virginia.

The parts are indeed worn out and need replacing soon. It surges now at stoplights and I can't seem to keep it low even with pulling the lever back manually. I am guessing it is around 1200-1300 RPM at idle like they said it was on their computer.

If I remember correctly, I had the same issue years back and it turned out to be the TPS.

 

[Trirocket3]

Manic, PM me a price and paypal and lets see if we can do business I am interested in a spare to get bored out and worked over for better flow.

Yes I brought a spare set, bored them out, got bigger butterflies made to supply more air for my BIG cams/valves & super flowed head
Bit of a pain reassembling them.

 

[idk]

Check that there is a little slack in both throttle cables.

Spray copious amounts of WD40 around all the linkages etc and then hose it all off with the focused spray of your garden hose. When it has dired off, spray a bit more WD40 on the linkages etc.

Check the TPS settings and make sure that they are good.

This should fix the problem, even if some of the parts are worn.

 

[Boog]

Update: Brahma is home and feeling better after going back to the shop while I was away with work. I got the used TB Unit from Manic Mechanic and the shop was able to cannibalize its good parts and rebuild my unit.
Thanks to @idk, @warp9.9, @Manic_Mechanic for your help and advice.
And to @Death Arrow 007 here are a few pictures of the dirty stuff that you asked about keeping clean on your new bike:

All the parts in the top left had to be replaced, this is the front of the throttle body unit where the Stepper motor pushes to increase RPM while cold. The burnt portion inside the opening is caused by leaking fuel I was told. Grime had worked its way inside the TB unit and caused this. I was told to wash this outside area more often and dry it with air power. Looks like exactly what Ian stated above.

This is the outside of one of the injector ports where the grime started working its way into the cylinder.

And this is what the injector looks like after being pulled. I am amazed at how much crap managed to get past he darn thing.

Cylinder 1 is starting to get some carbon build up.

Cylinder 2 has much more.

Cylinder 3. Looks like I need to use some injector cleaner from now on. If I am correct, this carbon will clean off after a few treatments.

Another thing to note was my spark plugs. they were changed at 34,400 miles and at 36,400 two had fouled out. Two others had corroded over from over heating. The shop tells me this is because of the high idle problem that appears to now be fixed.

My biggest lesson learned out of this costly experience is to better clean the bike than I have any other machine. This is my first fuel injected bike so. The other 27 bikes didn't need this much care to stay healthy but anything will keep longer if cared for properly. Now I know...

 

[Jag]

Update: Brahma is home and feeling better after going back to the shop while I was away with work. I got the used TB Unit from Manic Mechanic and the shop was able to cannibalize its good parts and rebuild my unit.
Thanks to @idk, @warp9.9, @Manic_Mechanic for your help and advice.
And to @Death Arrow 007 here are a few pictures of the dirty stuff that you asked about keeping clean on your new bike:

All the parts in the top left had to be replaced, this is the front of the throttle body unit where the Stepper motor pushes to increase RPM while cold. The burnt portion inside the opening is caused by leaking fuel I was told. Grime had worked its way inside the TB unit and caused this. I was told to wash this outside area more often and dry it with air power. Looks like exactly what Ian stated above.

This is the outside of one of the injector ports where the grime started working its way into the cylinder.

And this is what the injector looks like after being pulled. I am amazed at how much crap managed to get past he darn thing.

Cylinder 1 is starting to get some carbon build up.

Cylinder 2 has much more.

Cylinder 3. Looks like I need to use some injector cleaner from now on. If I am correct, this carbon will clean off after a few treatments.

Another thing to note was my spark plugs. they were changed at 34,400 miles and at 36,400 two had fouled out. Two others had corroded over from over heating. The shop tells me this is because of the high idle problem that appears to now be fixed.

My biggest lesson learned out of this costly experience is to better clean the bike than I have any other machine. This is my first fuel injected bike so. The other 27 bikes didn't need this much care to stay healthy but anything will keep longer if cared for properly. Now I know...

Glad your back on the roads!!! why don't you trade her in, get a new one and buy the longest extended warranty your can. With the miles you do it will pay for its self in two years. Lol

 

[Boog]

Glad your back on the roads!!! why don't you trade her in, get a new one and buy the longest extended warranty your can. With the miles you do it will pay for its self in two years. Lol

Maybe so... But it is hard to part with my first 'forever bike'. Brahma is running good at the moment and I now know how to care for him better. Just wished Triumph had designed this portion better.

 

[IMFASTTOO]

Update: Brahma is home and feeling better after going back to the shop while I was away with work. I got the used TB Unit from Manic Mechanic and the shop was able to cannibalize its good parts and rebuild my unit.
Thanks to @idk, @warp9.9, @Manic_Mechanic for your help and advice.
And to @Death Arrow 007 here are a few pictures of the dirty stuff that you asked about keeping clean on your new bike:

All the parts in the top left had to be replaced, this is the front of the throttle body unit where the Stepper motor pushes to increase RPM while cold. The burnt portion inside the opening is caused by leaking fuel I was told. Grime had worked its way inside the TB unit and caused this. I was told to wash this outside area more often and dry it with air power. Looks like exactly what Ian stated above.

This is the outside of one of the injector ports where the grime started working its way into the cylinder.

And this is what the injector looks like after being pulled. I am amazed at how much crap managed to get past he darn thing.

Cylinder 1 is starting to get some carbon build up.

Cylinder 2 has much more.

Cylinder 3. Looks like I need to use some injector cleaner from now on. If I am correct, this carbon will clean off after a few treatments.

Another thing to note was my spark plugs. they were changed at 34,400 miles and at 36,400 two had fouled out. Two others had corroded over from over heating. The shop tells me this is because of the high idle problem that appears to now be fixed.

My biggest lesson learned out of this costly experience is to better clean the bike than I have any other machine. This is my first fuel injected bike so. The other 27 bikes didn't need this much care to stay healthy but anything will keep longer if cared for properly. Now I know...

I think you need a different dealer sounds like BS to me I dont see anything wrong with that a little cleaner wont fix and that grime will come off with some starter fluid and injector cleaner no big deal and why dont you clean your bike ?