2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.
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I'm an idiot, tryed to set TPS but couldn't finger it out.

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Old 12-14-02, 06:29 PM
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Red face I'm an idiot, tryed to set TPS but couldn't finger it out.

Yes I said finger.

(Please keep in mind this is for a S5 non turbo)

Ok, I went to radio shack and bought 2 LEDs and some spade connectors to make the test lamp. I connected the two red wires and put a spade on it, and then put a spade on each of the other two black wires. That sound right? I then fired up the car till it reached normal operating temperature. I shut down the engine and plugged in my contraption. Found the green connector thing. It was right near the stock air box. Connected my red wires into the top slot and the other two in the bottom two slots. Turned the ignition to the ON position (OFF being the 1st setting, accessories being the 2nd, ON being the 3rd, and start being the 4th). I then went to look at my lights and none were turned on. I poped the white plastic cap off my adjustment screw and turned it. (It took me a while to find that screw. I hope I was turning the right one. It controled the length of a spring that was situated in some cam thingy) Anyway I turned and turned the screw and couldn't get the damn thing to light up. I thought that the engine had to be running so I started her up and 1 light was on. When I reved the engine the second light came on. So that means my thingy actually works. Does this mean my TPS isn't working? I held the throttle open a bit and played with the black plunger (the bottom of the two. Is that the narrow or wide one?) When I pushed it in, the rpms dropped. I am not sure if I tested the top plunger.

So whats the matter? Is my method at fault, or do you think some system is faulty?

Thanks for the help.
Old 12-14-02, 07:31 PM
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Hmm... the motor should be warmed up, and the ignition to the "on"position. You should be able to adjust that screw to see one light.

Try it again, back the screw ALL the way out and run it back in.

Rat
Old 12-14-02, 07:59 PM
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Do I have the correct screw?
Old 12-14-02, 08:05 PM
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IT should be covered by a white plastic cap, right next to the TPS.

Seems to me like you got the right one.

J
Old 12-14-02, 08:24 PM
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yo daedalus, your name sounds familiar... i know i've heard it before but can't figure out wat it is... care to refresh my memory? sorry, i know it has nothing to do with the thread.

eddie
Old 12-14-02, 08:29 PM
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Greek Mythology. Daedalus is the Father of Icarus, inventor of the wax wings, designer of the laberinth, etc.

J-Rat,

When you adjust the screw, its supposed to be compressing or lengthening the spring correct? How far can that thing be backed out? Till the screw comes out?
Old 12-14-02, 08:30 PM
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Oh yeah, and if you've ever played a PC games called Deus Ex, Daedalus is a character in that game. Some computer AI or something.
Old 12-14-02, 08:40 PM
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Just as a side note, I do believe the two lights represent the narrow band. The red wire in the top slot is being connected to 12v and the two lower slots are a source of ground for each light. When the ECU sees one volt output from the tps(plus or minus .05) it put a ground on the BLUE solenoid(relief solenoid), which in turn is spliced to the green connector, so one of the lights comes on. When the screw is turned even more and the second light comes on, that is the ECU putting a ground on the switching solenoid (GREY), which is spliced to the other wire in the green connector. Makes the second light come on.
So if you adjust the narrow range, you at the same time adjust the broad/wide range. (just practicing my typing).
Yeah. You made the light assy right.

I have never set a series five, but I do have a url where the guy stated something about doing a little bending of a bracket on a series five. Not in a manual.

Last edited by HAILERS; 12-14-02 at 08:42 PM.
Old 12-14-02, 08:40 PM
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Originally posted by Daedalus
Greek Mythology. Daedalus is the Father of Icarus, inventor of the wax wings, designer of the laberinth, etc.

J-Rat,

When you adjust the screw, its supposed to be compressing or lengthening the spring correct? How far can that thing be backed out? Till the screw comes out?
Thanks for the brief lesson in Greek history..

Now back to the problem... YOu can back that screw ALL the way out, it wont hurt anything.

Rat
Old 12-14-02, 08:45 PM
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So if no lights come on, should I be compressing (tightening the screw) or lengthening (loosening the screw) the spring?

Also, could this be a sign if a failed/broken TPS?
Old 12-14-02, 08:49 PM
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Originally posted by Daedalus
So if no lights come on, should I be compressing (tightening the screw) or lengthening (loosening the screw) the spring?

Also, could this be a sign if a failed/broken TPS?
Okay, run the screw throught he ENTIRE travel. You said you had TPS lights when the motor was running, so something is fishy.

Recheck ALL your work, make sure the key is ON. Run the screw all the way back, and start running it back in. If the lights dont illuminate, something else is going on..

Jarrett

*edit* Sh-t FIRE!! This is an S5! Damnit! Why didnt I read closer...Hold on..

*edit#2* They are the same.

Last edited by J-Rat; 12-14-02 at 08:54 PM.
Old 12-14-02, 09:04 PM
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Frankly speaking, if the light is on when at idle, AND the car is hot, the thing is probably set already. One other way to find out, is to go to the series five manual, Fuel Section, and where at the beginning of that chapter it give you the output/input of each pin on the ECU. There you will find the reading you should see for the narrow and wide band. So if you have the car in the configuration of the table in the manual, and the narrow and wide band read per the specs.................
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