Otis
Needs a job
Captain Kickstand
Posts: 3028
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posted June 18, 2002 03:39 AM
Y2K or others, I need TPS help please....
I had adjusted the TPS on my 2000 12 waaay back when and after I got the full Yosh system I never changed it back to stock. I do not have a PC on the bike and it has always run fine but I am getting like 20-25 mpg and after seeing Ninjamans Yosh pipe with ZERO black soot at the end of his pipe and mine being all black it's obvious I'm running really rich. I'd like to experiment with the TPS and put it back to stock. Here is the problem.
When I adjusted it initially I did it without a multimeter, I did it according to the instructions posted back then about raising the idle to 2K then moving the TPS until the idle got to it's highest point, for me it was 2800rpms, then moving the idle back down to 1000. Can someone explain to me how to put it back to stock? Now, to let you know in advance, I did score a mark on the pieces b4 I moved it initially so if I wanted to go back to stock I could do it and I tried that yesterday but no and behold I couldn't see the mark I made so I guessed and it made the bike run pretty badly. SO I tried to put it back to where I had it and it still is not right, feels REALLY soft on throttle application and now I'm pissed. Shouldn't of fucked with it but now it's too late.
Can someone please give an electronic idiot clear step by step instructions maybe with pictures on how to put the TPS back to the I think 1.08? I had read something about sticking a wire in each sied of the TPS connection then connecting a digital multimeter (which I will have to buy) on them and turning to the correct reading?
Please help this idiot who should have left well enough alone!
Chris
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Ninjaman12R
Needs a job
as a Deal's Gap tour guide.
Posts: 4767
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posted June 18, 2002 04:05 AM
Damn Another One Bites The Dust......
That goddamned rock cocaine has finally finished you off eh??? I told you it wasn't worth it but you wouldn't listen. Now look at you,........junkie MF, it's time for rehab son.
Seriously, I wish I could help you with your TPS, but that is something I have never touched on my bike. Hell it may be the only thing I haven't tinkered with. Kinda glad too, hopefully one of these guys can help you out.
I remember reading a service bulletin or something that stated you idle the bike up to 2k and wait until the fan starts kicking on, then move the TPS until you find where it will idle the engine up the most, then lock it down. This is probably a little dusty cause I only read it once, and probably useless on a piped bike. But hey, this is a think tank eh? 
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What we're dealin' with here is a complete lack of respect for the law.
Sheriff Buford T. Justice of TEXAS
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Otis
Needs a job
Captain Kickstand
Posts: 3028
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posted June 18, 2002 04:25 AM
That's what I did initially back in 2000 Rick but now I need to bring it back to stock and the problem now that I've messed with it is I have no initial baseline to reverse the same process. I'm rather screwed me thinks. Have to do this the right way so I need some help from the wizard, Y2K.
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Ninjaman12R
Needs a job
as a Deal's Gap tour guide.
Posts: 4767
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posted June 18, 2002 06:02 AM
You're still ok.....
I still don't think it's a big deal C. All you need is someone to give you a little direction on this one. I know that someone here can tell you where you have to take your voltage checks etc., then it's just a matter of getting your multimeter out and doing it.
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What we're dealin' with here is a complete lack of respect for the law.
Sheriff Buford T. Justice of TEXAS
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Tearinitup
Expert Class
VP Code Monkey
Posts: 298
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posted June 18, 2002 06:55 AM
 Edited By: Tearinitup on 18 Jun 2002 07:57
Experimentally...
My 2000 zx12 has always turned off the injectors when decellerating at 0% throttle. So if I take my bike to 10k in 2nd gear and chop the throttle closed my injectors immediately turn off. If I crack the throttle to 1% (on my power commander) injectors turn back on again. You can definitely feel the injectors come back on... bam all of a sudden you have some power back. So basically what I am saying is that, in its own way the ecu is telling you where stock 0% is. If you had a little dyno time or just ran up the street you should be able to experiment with it and get it back to stock.
Or.
If someone has measured the tps voltage with the butterflies all the way closed (Not on the idle screws but actually all the way closed) then you could just do the same and set the voltage properly.
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Need4Speed
Expert Class
Feel the Need! The Need4Speed!
Posts: 102
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posted June 18, 2002 07:00 AM
Chris, I have copies of the step by step instructions I used to set mine at home in my manual. I don't remember the actual steps.(It was a while ago when I set mine) If you want I can make copies of the TPS stuff I have and tomorrow at lunch I could drop them off.
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Otis
Needs a job
Captain Kickstand
Posts: 3028
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posted June 18, 2002 07:07 AM
That would be most excellent of you Mike, you never did let me know when you were coming to get the brake pads. Do you still want them? I would be happy to meet you half way if you want.
Chris
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zx1012r
Expert Class
Posts: 125
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posted June 18, 2002 07:56 AM
Otis,
Here goes. You have to back probe the connectors on the TPS. Stick a paper clip in the back side of the connector between the wire and the weatherproof seal. Put one in the BROWN w/BLACK stripe (top) and one in the YELLOW w/WHITE stripe (middle). Do this with the ignition off and make sure the paper clips will not touch each other.
You have to warm the bike up to operating temp. Then adjust your idle to 1,000 RPM. Here in lies the tough part. My Yosh equipped bike will not idle smooth at 1,000 so it's an educated guess. Then turn off the bike.
Take a multi-meter and take a reading in VOLTS DC. The positive probe goes to the YELLOW/WHITE wire, and the negative goes to the BROWN/BLACK wire. Turn the ignition on but don't start the bike. The reading should be between 1.084 and 1.086 Volts. Turn the TPS accordingly to reach this reading.
Again this is slightly subjective to error because of the fluctuation of idle, and the accuracy of the factory tach. But you should be able to get it close.
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Need4Speed
Expert Class
Feel the Need! The Need4Speed!
Posts: 102
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posted June 18, 2002 08:20 AM
Sounds like zx1012r gave you your answer. I've been really busy lately and haven't been able to get over there but I still want the pads. I'll plan on coming at lunch tomorrow and I'll bring the TPS copies anyway. If that doesn't work for you let me know. If I don't hear from you I'll see you tomorrow around 11:30.
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Otis
Needs a job
Captain Kickstand
Posts: 3028
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posted June 18, 2002 10:04 AM
Mike, I may not be here at 12 tomorrow. I have to go to court in Detroit. An ex-employee of ours was arrested for fraud and a check cashing scheme and I have been subpena (sp?) to testify. I have to be there at 9am but the court said I may be there as long as 5 hours! WTF, depending on when the case is called. How stupid is that. BUT I will bring the pads in tomorrow morning and they will be here, so please come anyway if that is the best time for you. I will have my secretary hold them for you. Then again, I may be back in the office by 11am or so. Do you remember how to get here?
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Otis
Needs a job
Captain Kickstand
Posts: 3028
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posted June 18, 2002 10:11 AM
quote:
Otis,
Here goes. You have to back probe the connectors on the TPS. Stick a paper clip in the back side of the connector between the wire and the weatherproof seal. Put one in the BROWN w/BLACK stripe (top) and one in the YELLOW w/WHITE stripe (middle). Do this with the ignition off and make sure the paper clips will not touch each other.
You have to warm the bike up to operating temp. Then adjust your idle to 1,000 RPM. Here in lies the tough part. My Yosh equipped bike will not idle smooth at 1,000 so it's an educated guess. Then turn off the bike.
Take a multi-meter and take a reading in VOLTS DC. The positive probe goes to the YELLOW/WHITE wire, and the negative goes to the BROWN/BLACK wire. Turn the ignition on but don't start the bike. The reading should be between 1.084 and 1.086 Volts. Turn the TPS accordingly to reach this reading.
Again this is slightly subjective to error because of the fluctuation of idle, and the accuracy of the factory tach. But you should be able to get it close.
Excellent instructions zx0112r! I have one question though, insert the paper clip between the wire and waterproof seal? This is on the outside of the actual connection? I just went out and looked and am not sure what you mean. Are you suggesting:
Leave the connection intact and stick the paper clips in the tubes that have the wires inside them? Is the tubes the waterproof seals you're speaking of?
OR
Stick the paper clips somehow inside the actual connection joint?
OK I'm confused. I looked at it real close and can't see where to put the paper clips.
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zx1012r
Expert Class
Posts: 125
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posted June 18, 2002 11:55 AM
Otis,
Take the connector off the tps to get at it better. Look where the wires go into the back of the connector. You will see that they are surrounded by a rubber "o-ring". Slip the paper clip end down between the wire and the "o-ring". When the clip seems to "bottom" out, wiggle the paper clip and see if you can get it in a little farther to make a good contact. Then put the connector back on the tps and make sure the paper clips aren't touching each other. Then turn on the ignition and take your reading.
P.S. If you can change a diaper and figure out when the bottle is the right tempature, you can easily do this no problemo! How is your little one by the way? I trust you are learning new stuff every day and enjoying being a dad!
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Y2KZX12R
Needs a job
CompetitionCNC.com
Posts: 3762
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posted June 18, 2002 12:25 PM
Otis, looks like zx1012r has ya covered.
Thats all ya have to do.
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Otis
Needs a job
Captain Kickstand
Posts: 3028
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posted June 19, 2002 03:08 AM
Gotcha zx1012. That information helps a clear it up for me, thanks. Allison is doing great. Last night I had her on my lap and she was grabbing my fingers and smiling and I was making goofy faces at her and she laughed! 1st time she's done that and it was so funny I laughed out loud myself but it was so sudden that it scared her and then she cried. LOL Being a daddy is the greatest thing since sliced bread. Thanks for asking and thanks a ton for your help. I'll go get the digital multimeter today.
Chris
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