• 4 Stroke Husqvarna Motorcycles Made In Italy - About 1989 to 2014
     TE = 4st Enduro & TC = 4st Cross

  • Hi everyone,

    As you all know, Coffee (Dean) passed away a couple of years ago. I am Dean's ex-wife's husband and happen to have spent my career in tech. Over the years, I occasionally helped Dean with various tech issues.

    When he passed, I worked with his kids to gather the necessary credentials to keep this site running. Since then (and for however long they worked with Coffee), Woodschick and Dirtdame have been maintaining the site and covering the costs. Without their hard work and financial support, CafeHusky would have been lost.

    Over the past couple of weeks, I’ve been working to migrate the site to a free cloud compute instance so that Woodschick and Dirtdame no longer have to fund it. At the same time, I’ve updated the site to a current version of XenForo (the discussion software it runs on). The previous version was outdated and no longer supported.

    Unfortunately, the new software version doesn’t support importing the old site’s styles, so for now, you’ll see the XenForo default style. This may change over time.

    Coffee didn’t document the work he did on the site, so I’ve been digging through the old setup to understand how everything was running. There may still be things I’ve missed. One known issue is that email functionality is not yet working on the new site, but I hope to resolve this over time.

    Thanks for your patience and support!

2013 TE310R throttle sensor/body

Ciao,
Yes, following comprehensive bench testing my TPS has a faulty yellow wire at the connection inside the TPS! my last option (after the Suzuki TPS option) is to try an get access to the connection and repair it but it's difficult as during manufacture the connections have been seal with liquid plastic! I tried a specialist TPS electronics repairer, but he flatly refused to do the repair.
 
Try acetone to soften up the potting compound. Or start digging it out. go slow. oh yeah: take plenty of pictures (before, during, and after).

...and the TPS in your 1st picture seems to be the right one?

img_3168-jpg.75955
 
Sketchl.....
Those words 'Paul Feeny Group' still make me sad.
I believe they could have handled the KTM transition much better than they did....
 
Sketchl said:
Ciao,
Yes, following comprehensive bench testing my TPS has a faulty yellow wire at the connection inside the TPS! my last option (after the Suzuki TPS option) is to try an get access to the connection and repair it but it's difficult as during manufacture the connections have been seal with liquid plastic! I tried a specialist TPS electronics repairer, but he flatly refused to do the repair.
Click to expand...
Perhaps take a visit to your local Suzuki dealer with your sensor in hand and compare it to a bike on the floor
 
Thanks LAHuskyrider, note that I'm apprehensive in buying a complete second hand TB plus the one ex US is missing TPS!

Below is pic of a Suzuki RM-Z throttle body, very similar to Husky :)

Ciao Dangermouse449, I've already visited the local Suzuki store and put all my chips on your suggested Part#13580-28H01 and firmly believe it's going to be compatible when it turns up next week. Note that PFG have now got the Australian go-kart chaps by the balls with Mick Doohan at the helm........

I'll report back next week.IMG_0872.PNG
 
Hey Sergio
Looks like lots of Husebergs & KTMs also used the same basic throttle body (and hence, a similar TPS). Unfortunately, the price on the TPS varies from $94 (90° bolt, without the leads) to $167 (90° bolt with the triangle connector on the end of 10" leads). These prices are ridiculous for a $15 potentiometer

http://www.motosport.com/dirtbike/oem-parts/ktm/2012/250xcf/throttle-body?fam=Engine
KTM part# 81241077044 TPS KPL 09 $126.59 $94.94

here's brand new (!) throttle body with TPS, injector, MAP etc for $190+shipping (wow- If I was considering spending $100+ on a single part, I might consider this):
http://www.ebay.com/itm/OEM-Husaberg-KTM-Husqvarna-Throttle-Body-81241001000/322340078646

Polaris snowmobile TPS with triangle connector $179 (30° bolt too):
http://www.ebay.com/itm/Polaris-04-...Position-Sensor-1204715-New-OEM-/171874433310
but you can get 'em for $128 here:
http://www.ebay.com/itm/1204715-ASM-TPS-850-KEIHN-/282255324201
or you can get 'em for $120 here:
http://www.partshark.com/oemparts/p/polaris/1204715/asm-tps-850


I'm a little irritated that these simple sensors are so expensive. But at least we have (possibly) 4 or 5 alternatives. If anybody else finds a source for these, post'em up. Let's get a good list going.

question: with the way these things are designed, it looks like they can rotate clockwise or counter-clockwise. Can anybody confirm or refute this? Sergio, can you measure yours (Ohm meter) while you rotate it either way maybe?
 
Ciao Trenchcoat85,

To be honest it's amazing how many variants of the Keihin throttle bodies there are, and found that there was some big differences with the KTM and Husey TPS's.

I can confirm that the Polaris TPS is not suitable for my TE310R as the potentiometer does not align with the throttle butterfly and you'd have to create a new position for the TPS fastening bolt. Note that I've already returned the Polaris TPS which had a RRP of AUD420, but sourced for AUD300!! The Suzuki TPS had a RRP of AUD188....
Bloody crazy prices for TPS.

I'm confident that Dangermouse449's Suzuki 2008-2013 RM-Z250/450 TPS recommendation is the best option as the throttle body is nearly identical to the TE310 one, hopefully it will be?
 
Sketchl said:
Ciao Trenchcoat85,

To be honest it's amazing how many variants of the Keihin throttle bodies there are, and found that there was some big differences with the KTM and Husey TPS's.
Click to expand...

looks like you may have got approved- cool. it'll make conversations like this go easier.

I know that you've come around to the consensus that the RM-Z throttle body is almost the same as your husky's; but what differences are you finding with the Husebergs and KTMs? The 250 & 350s throttle bodies in the 2012-2014 era seem close to the Husky's. Let's tell other people reading this 5 years from now so they can narrow their hunt.

I can confirm that the Polaris TPS is not suitable for my TE310R as the potentiometer does not align with the throttle butterfly and you'd have to create a new position for the TPS fastening bolt. Note that I've already returned the Polaris TPS which had a RRP of AUD420, but sourced for AUD300!! The Suzuki TPS had a RRP of AUD188....
Bloody crazy prices for TPS.
Click to expand...

oh, I didn't realize you were trying Polaris TPSs already- which ones? the two I stumbled upon were IDed purely on looks, and definitely would've very low on the list to try... especially considering price. (were those replicated pictures you posted on page 1 images of Polaris TPSs? they got snowmobiles in Oz? maybe victory's. hmmm)

btw, what's the ohm range of these things (did DM say it was something like 0-5K ohms)?

sounds like your getting close. good luck.
 
Ciao,

First people I went to was KTM and spoke to a so called 'guru' in parts who confirmed that there was no direct replacement part from the KTM spare parts bin. KTM have a two piece TPS as per the diagram below. For this exercise I'm trying to find a direct replacement with no modifications.

With reference to the incorrect Polaris part, look up #1204715, common TPS for many of the Polaris engines from 2006 to 2013

I believe 0-5K ohms is the range and will confirm..

IMG_0874.PNG
 
The sensors in almost all efi systems work on a 5v signal voltage.
The output signal voltage to the ecu is a modified voltage usually between 0.4 & 4.6v.
Below or above these voltages is considered Open or Shorted by the ecu and should log a code, voltages in between these points are considered good signals.

On the TE449 I have, normal idle setting is 0.7v, a full throttle reading is from memory a bit below 4v on my bike.
 
Dangermouse449 said:
The sensors in almost all efi systems work on a 5v signal voltage.
The output signal voltage to the ecu is a modified voltage usually between 0.4 & 4.6v.
Below or above these voltages is considered Open or Shorted by the ecu and should log a code, voltages in between these points are considered good signals.

On the TE449 I have, normal idle setting is 0.7v, a full throttle reading is from memory a bit below 4v on my bike.
Click to expand...

I sorta knew that (voltage levels) but that doesn't really tell me the resistance ( unless I knew current levels). I'd guess we're talking 50mA at 0ohms (throttle closed) and 25mA at WOT.

shit, let me do the calculations: 5v/5k ohms= 1ma that seems way, way low. maybe 0-500ohm, without considering the intrinsic resistance of the circuit (which would be the base current at idle; if they don't use some kinda constant current source in the ECU; then the center tap would be a extremely high input impedance A/D converter... Now that I think about it- that's probably it)

[wait... I missed that: WOT is like 3.9v? hmmm, i would've guessed something along the lines of 4.3v or maybe 4.6v]

May 2018 edit: also, the resistance range of the stock TPS turned out to be 130 ohms to 5050 ohms (probably 5000ohms- meter error) unmounted on the TB. when mounted, the no-throttle/idle resistance was 730ohms, and full throttle 3920ohms. With an accurate current source (like DM reported) of 1mA this also would equal the the voltage reading in mVolts (or in volts: 0.730v and 3.920v). The throttle body I used was off a low-hour '14 TXC 250R.
 
Really need to set by voltage on the individual bike or car as it is the signal voltage the ecu uses, not the resistance.
Knowing the actual value is of no use.
As long the increase is linear and has no gaps or spikes then the sensor is OK.
 
Dangermouse449 said:
Really need to set by voltage on the individual bike or car as it is the signal voltage the ecu uses, not the resistance.
Knowing the actual value is of no use.
As long the increase is linear and has no gaps or spikes then the sensor is OK.
Click to expand...

well, I'm not talking about tuning- I wanted the resistance range so I could fab a TPS (possibly) in the future. so I kinda hafta disagree with you there.
 
Sketchl said:
Ciao,

First people I went to was KTM and spoke to a so called 'guru' in parts who confirmed that there was no direct replacement part from the KTM spare parts bin. KTM have a two piece TPS as per the diagram below. For this exercise I'm trying to find a direct replacement with no modifications.

With reference to the incorrect Polaris part, look up #1204715, common TPS for many of the Polaris engines from 2006 to 2013

I believe 0-5K ohms is the range and will confirm..

View attachment 76013
Click to expand...

thanks, Sergio... good info. Sounds like your guru thinks the ktm tps will work (with the obvious wire-splicing hand waving)?

(I'm not positive, but I think the 2nd KTM part is a cover for the TPS and not extremely important).

Keep the investigation up; you're helping a lot of people in the future.

[Polaris: I found an older tps (88.....?) and a newer one, but did not make a note of them. I will look up your polaris part when I get back from my trip. And, whoops... I guess you still are waiting for approval- your last post #30 just appeared 3 days later. try posting in the "waiting for approval" thread I mentioned]
 
Unfortunately I can confirm that Suzuki TPS part#13580-28H01 is not compatible as the internal sensor direction is opposite to Husky**************************************** very disappointing as all other aspects of the TPS are ok :(
Back to the drawing board or might revert back to the Polaris sensor and make new bracket!
 
I've questioned my KTM 'guru' and done some more clarification of the KTM parts bin!!
I've now ordered KTM TPS part#77741077044........I'll update suitability.
77741077044.jpg
 
By swapping the 5v + and earth pins in the plug you should be able to make that sensor read low to high the right way.

We fitted quad throttle bodies to my sons Nissan engine off another similar engine, this mod to the TPS was one of the things we needed to carry out to make it run
 
Dangermouse449 said:
By swapping the 5v + and earth pins in the plug you should be able to make that sensor read low to high the right way.

We fitted quad throttle bodies to my sons Nissan engine off another similar engine, this mod to the TPS was one of the things we needed to carry out to make it run
Click to expand...
Holy sh*t! That is genuis... even if it didn't work. As long as the resistance is linear in the TPS (and it definitely should be) this would work fine when it's only the rotational direction that's different.
 
You must log in or register to reply here.
Back
Top