|  | Topic : can someone clarify a few things about stepper/TPS adjustment please? |  |
| | | daz | | Zeus |  |  | | Reg. Date | : | 12/05/2009 | | Posts | : | 7,686 | | Location | : | United States |
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| | Posted : 30 Apr 2022 - 23:02 Post title : can someone clarify a few things about stepper/TPS adjustment please? | | | Ok, so after shitload of time spent trying to figure this all out with the extremely misleading written by monkeys triumph manual, i came to understand a few things about this procedure. One is the stepper and TPS must be done at the same time with stepper being the one u must do first. I did the manual stepper adjustment which was no walk in the park and afterwards the voltage went off when i started the bike. The stepper affects the TPS. And in the manual when it tells you how to adjust the stepper it then says to check the voltage so it's in range. Huh?! What fucking voltage? The POS manual says nothing about a voltage for the stepper, only the nut adjustment to set a .5mm clearance between the cam and the roller. Well, i came to realize what they meant is the TPS voltage. But they did NOT say check the TPS voltage.
So not i see that as you adjust the nut on the stepper the TPS voltage changes. But they say to set that 5MM clearance and they do NOT clarify that you must do that first then do the manual TPS adjustment between the throttle bodies. So i did the stepper last and i could NOT get that .5mm clearance. I turned that fucking nut in both directions far as it could go and the clearance never changed at all. I figured that i was measuring the wrong thing but in the manual it's clear where to measure and there was zero clearance no matter how far in either direction i turned that nut. So what i did was adjust the stepper till TPS read .60v then adjusted that screw on the throttle linkage to get the idle back to normal. Bike seems to run well but the idle stays up then slowly comes down which it has done before.
So my first thought is maybe i have to adjust the throttle linkage screw to get the .5mm clearance? Maybe thats why the stepper's nut won't allow any clearance, because the throttle linkage is too far towards the stepper stop. Then the idle would likely be way too low or high but then i guess is when i'd do the stepper adjust in tuneecu? Any thoughts. If i knew how to get the stepper right then i'd be willing to go back to hell itself and manually adjust the TPS once the stepper is right. (what a f'n pain in the assn that is!)
| 2010 Blue/White Thunderbird, "Brutus". 1700 kit, short tors, gutted cat, UNI filter, filter seal off, custom tune. Brutus in his native habitat: Link
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| | | daz | | Zeus | | | | Reg. Date | : | 12/05/2009 | | Posts | : | 7,686 | | Location | : | United States |
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| | Posted : 01 May 2022 - 01:15 Post title : Re: can someone clarify a few things about stepper/TPS adjustment please? (Re: daz) | | | Ok, after some more f'n with it, i found that since theres no way i can find to get a .5mm gap between the cam and roller on the stepper, i just adjusted it with the engine running and what i found was if i set it till the TPS was at the proper range, the idle would go wacky. 10 seconds at 1500 RPM's, then drop to 800 for 10 seconds, then back to 1500 and just keeps changing back and fourth. So i had to back off the nut till that stops at which point the TPS is way low. Around .51v. That tells me the TPS on the throttle body is way out after i adjusted it earlier. So now i have to go back and set the TPS again. But it's such a major pain i don't want to do it till i get the stepper set right. Can anyone tell me how the hell to do that?
Like i said, no matter how far in either direction i turn the nut, theres never any gap at all let alone .5mm. And it's not the screw on the throttle linkage, i recall now thats the balance screw. So how in gods name to i get a gap there? Are the throttle adjusters AT the throttle body linkage or the ones in the middle of the cable the answer? Throttle grip has the proper play. And do i hit the is ISCV adjust in tune ecu with the engine off then adjust the gap or do i adjust the gap then do the tuneecu adjustment? I can't set the TPS properly till i do this and the manual is a fucking joke.
| 2010 Blue/White Thunderbird, "Brutus". 1700 kit, short tors, gutted cat, UNI filter, filter seal off, custom tune. Brutus in his native habitat: Link
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| | | Tomrx7 | | Set | |  | | Reg. Date | : | 21/04/2022 | | Posts | : | 13 | | Location | : | Hamilton, Scotland , United Kingdom |
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| | Posted : 01 May 2022 - 08:20 Post title : Re: can someone clarify a few things about stepper/TPS adjustment please? (Re: daz) | | | Watching this with interest as my tps needs adjustment, can't help much with how to get clearances but one thing I did find out when talking to my mechanic is the tps value should only be read when in adjustment mode in tuneecu or dealer computer etc never without or with the bike running as this is the wrong values as in adjustment mode the ecu forces the tb closed , with the ignition on the tbs crack open slightly in prep to start or to idle and will show a higher reading,possibly it may also need to be in adjustment mode to get the clearances when the tbs are forced shut , good luck with it , it sound a total ball ache
| | Post edited by Tomrx7 on 01 May 2022 - 08:26 |
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| | | daz | | Zeus | | | | Reg. Date | : | 12/05/2009 | | Posts | : | 7,686 | | Location | : | United States |
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| | Posted : 01 May 2022 - 15:00 Post title : Re: can someone clarify a few things about stepper/TPS adjustment please? (Re: Tomrx7) | | | Yeah, thats when i read it but it changed once i started the bike even after i stopped it and read it with engine off. Thats because the stepper changes since it's out of whack. Untill i can get that clearance theres nothing i can do but run it and turn it off a few times to make sure the stepper is stable, and since i believe the adjustment much be made cold, wait till then and do TPS. But i'm not gonna do the TPS again till i know the stepper is correct. I can give you some tips about getting to the TPS when u r ready too. For one, buy a long 8 MM wrench. The ones that come in a set are usually only about 3-4" long. The one i bought was probably 2" longer. Ace hardware has one thats the same price as most others but the closed end is a ratchet which is great and made the buy worth while for using often for other things over my small regular one. Unfortunately the ratchet end is no good for the TPS because it's too big but it will come in handy in many other instances. Anyways, get one of those or other long 8 mm wrench to to the job and when u r read let me know and i'll tell you how to get to it. It's kinda tricky so that will save you a lot of time and headaches. You will also need a very strong small flashlight. I bought one for the job because the 2 i had were not strong enough and u really need a strong light to make this easier. The one i got was 300 lumens. I'd shoot for that because i can't stress how much easier that makes it.
| 2010 Blue/White Thunderbird, "Brutus". 1700 kit, short tors, gutted cat, UNI filter, filter seal off, custom tune. Brutus in his native habitat: Link
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| | | daz | | Zeus | | | | Reg. Date | : | 12/05/2009 | | Posts | : | 7,686 | | Location | : | United States |
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| | Posted : 01 May 2022 - 16:09 Post title : Re: can someone clarify a few things about stepper/TPS adjustment please? (Re: daz) | | | Ok, more progress....i CAN get the .5mm clearance. I was finding none no matter how far i adjusted the stepper nut because what i found is getting the feeler gauge in there is trick. Hard to explain, but it has to be inserted just right or it will seem like there is no clearance. Now the question is which place in tuneecu do i use to set TPS, because there are 2 places that show TPS voltage and they differ by a lot. I set the TPS again and this time after i set it to .6v on the diagnostics tab under the "throttle heading i then went to the tests tab and ran the ISCV test again. From what i have read the bottom gauge should show the TPS number. I assume that is correct because when u run the test the gauge then says TPS. problem is, the number i get is .47v while on the diagnostics tab it says .6v which is where i set it to. \And that never changes when i run the test or not. So am i supposed to set TPS so that while running the ISCV test the gauge shows withing the .58 to .62v range? Or is the throttle heading showing the right number? I am assuming it should read within range on the tests page gauge while running iscv, yes?
| 2010 Blue/White Thunderbird, "Brutus". 1700 kit, short tors, gutted cat, UNI filter, filter seal off, custom tune. Brutus in his native habitat: Link
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| | | daz | | Zeus | | | | Reg. Date | : | 12/05/2009 | | Posts | : | 7,686 | | Location | : | United States |
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| | Posted : 01 May 2022 - 22:10 Post title : Re: can someone clarify a few things about stepper/TPS adjustment please? (Re: daz) | | | Ok Tom, heres the write up on the whole crap fest i went thru and finally figured out stepper and TPS adjustment. Note that you must do stepper check before TPS because if the stepper is out of adjustment you wanna adjust it and when u do it will probably throw the TPS out of adjustment. I put it in the how to forum here.... Link
| 2010 Blue/White Thunderbird, "Brutus". 1700 kit, short tors, gutted cat, UNI filter, filter seal off, custom tune. Brutus in his native habitat: Link
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| | | Tomrx7 | | Set | | | | Reg. Date | : | 21/04/2022 | | Posts | : | 13 | | Location | : | Hamilton, Scotland , United Kingdom |
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| | Posted : 01 May 2022 - 23:49 Post title : Re: can someone clarify a few things about stepper/TPS adjustment please? (Re: daz) | | | I'm assuming your using a pc for tune ecu , I'm using the android app and in there under parameters or on the general diials the tps will always show higher , on android there's a test and adjustment tab and it has iscv test reset etc but there's another tab at the bottom tat says adjustments and in there it has tps adjustment and when you run that it shows the true set voltage as it fiorce closes the stepper and throttle bodies and it's that voltage you adjust, I suspect the lower voltage your seeing is the one you need to get to .6 the photos below show the difference between the 2  
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| | | daz | | Zeus | | | | Reg. Date | : | 12/05/2009 | | Posts | : | 7,686 | | Location | : | United States |
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| | Posted : 02 May 2022 - 01:21 Post title : Re: can someone clarify a few things about stepper/TPS adjustment please? (Re: Tomrx7) | | | Yes, thats what i said in the tutorial i made. Maybe u didn't see the link? Anyways, what i said is there is a "throttle" heading in one place that reads higher than the place you see the voltage when doing ISCV test. I said to set it to the higher one because when you set it to .71v in the "throttle" heading, then that number will cause the ACTUAL voltage that u will see when doing the ISCV test to be right on. I explained all this in that tutorial, but the short of it is the reason i said to do it like that is so you don't have to try and set the TPS while running the ISCV and using that voltage to set the TPS. This way you don't have to run the test to set TPS and keep re running it every time it stops because it can take you 10 or more minutes to set the TPS due to the fact it's in a hard to get to place. So by using the voltage shown in the throttle heading you don't have to run the test while trying to set the TPS. You can just leave tuneecu on that page and when you move the sensor u will see the voltage change and once you get to .71 volt, then you can run the ISCV test and it will be correct at around .6 volt. In other words to be concise, if you set the TPS so it shows 71v under the "throttle" heading, then when u run the ISCV test it will be at .6v. It just makes it easier then trying to get it right while the test is running because when the test stops i think the gauge that shows the voltage drops to 0. Maybe not in android tho i dunno.
| 2010 Blue/White Thunderbird, "Brutus". 1700 kit, short tors, gutted cat, UNI filter, filter seal off, custom tune. Brutus in his native habitat: Link
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| | | Tomrx7 | | Set | | | | Reg. Date | : | 21/04/2022 | | Posts | : | 13 | | Location | : | Hamilton, Scotland , United Kingdom |
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| | Posted : 02 May 2022 - 06:27 Post title : Re: can someone clarify a few things about stepper/TPS adjustment please? (Re: daz) | | | Ah ok makes sense and yea missed the link daz but see it now
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| | | daz | | Zeus | | | | Reg. Date | : | 12/05/2009 | | Posts | : | 7,686 | | Location | : | United States |
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| | Posted : 02 May 2022 - 22:01 Post title : Re: can someone clarify a few things about stepper/TPS adjustment please? (Re: Tomrx7) | | | I must say, the bird is running really great now, better then new. Only issue is a very slight hesitation from a stop so i have to give it a big more throttle, but i think that will likely resolve itself when the bike adapts. Only rode it about 6-7 miles. But other then that it's sounding and pulling as good as i ever recall, maybe better. From a dead stop i gunned it and 0-60 seemed like 3 seconds. Gotta change the oil and fork oil and put a new set of throttle cables and she'll be pretty much fully renewed after all the bearings, belt and clutch cables have recently been replaced. I love when this happens, as it renews my love for the bike.
| 2010 Blue/White Thunderbird, "Brutus". 1700 kit, short tors, gutted cat, UNI filter, filter seal off, custom tune. Brutus in his native habitat: Link
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| | | Tomrx7 | | Set | | | | Reg. Date | : | 21/04/2022 | | Posts | : | 13 | | Location | : | Hamilton, Scotland , United Kingdom |
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| | Posted : 03 May 2022 - 05:49 Post title : Re: can someone clarify a few things about stepper/TPS adjustment please? (Re: daz) | | | That's great to hear ???? my tps is a little out at .547 don't know if that makes much difference being slightly out but going to get it adjusted anyway
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| | | daz | | Zeus | | | | Reg. Date | : | 12/05/2009 | | Posts | : | 7,686 | | Location | : | United States |
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| | Posted : 03 May 2022 - 14:20 Post title : Re: can someone clarify a few things about stepper/TPS adjustment please? (Re: Tomrx7) | | | While i'm certainly light years away from being a expert on this stuff, logically i think .547 is considerable and should make a very notable difference. Not sure where my TPS was because when i started i was just looking at it under the throttle heading. But i know my stepper was off because i had tried to set it in the past and never could due to the feeler gauge issue i mentioned. So i just left it wherever it was after i had been twisting the nut all over the place trying to get that .5mm gap. I know TPS was in the 70 something range under the throttle heading but i can't recall exactly what voltage it was at. But when i tried to adjust ISCV i remember it was way off, tho i am not sure if i had already messed with the stepper adjustment at that point because i went thru so much for 2 days trying to figure this out the timeline is long lost in my head. But like i said it showed 70 something under "throttle" yet on the gauge during the iscv test it was in the high 40's. So it doesn't really make sense because if it was in the 40s the number under throttle should have been much higher. I wish i had kept track of the numbers and what i did from the beginning but it's done and runs great not so WTF. By the way, while u r at it don't forget to check your throttle balance. Quick and easy so no reason not to.
| 2010 Blue/White Thunderbird, "Brutus". 1700 kit, short tors, gutted cat, UNI filter, filter seal off, custom tune. Brutus in his native habitat: Link
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| | | Slcharger | | Jupiter | |  | | Reg. Date | : | 18/02/2016 | | Posts | : | 1,661 | | Location | : | Denmark |
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| | Posted : 26 Apr 2023 - 14:50 Post title : Re: can someone clarify a few things about stepper/TPS adjustment please? (Re: daz) | | | I dont know if it is different, but I still use the PC version of TuneEcu, not the Android version, and I don't recognize any of the problems you describe Daz.
I did run a checkup of the TPS the following way.
TuneEcu connected, being in TEST MODE.
Double click on Adjust ISCV, and now you adjust the TPS to 0.6 Volt.
Double click on ISCV again and now you adjust the stepper motor full stroke to 0.75 Volt. (no feeler gauge needed, only read value on computer )
Double click on ISCV again, and the ECU will calibrate the stepper motor movement. ( will end up with something like 0.62-0.68 V )
Reset calibration, and proceed with usual procedure for calibration from cold to fan running + 12 min.
The ECU will be testing various rpm, before settle on chosen idle rpm.
The idle is now smooth running again.
Kim
| Big Bird, Bordeaux with " Celtic theme " Airbrush, 2010, 1700CC, ABS, 65.000 km. Lowered with Nitros rear shocks, Linear front springs, Burchard forward footrest kit, Kuryakyn ISO grips, LOTS of chrome, SLcharger REV2+ tune, Modified Cee Baileys windshield, Oil pressure gauge, Air box elimination kit, Portet cylinderhead, Intake cam advanved 8 degree, Exhaust cam retarded 2 degree, 10.5 C/R, Knock sensor, Machined flywheel, DNA Chrome Spoke wheels, 18x8.5"- AVON AV72- 240/40/18, 21x3.5"- AVON AV71- 120/70/21, Corbin seat with backrest, 20W fork oil. Hiflo HF303RC oil filter, Penrite Racing 20-20W60 engine oil, Adjurl lights.
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