Problem with TPS HELP

[Nayr747]

Ok, I got a TPS code. So I tested it using this method: http://www.plymouthlaser.com/tps.htm and I got:
4.55K Ohms between 1 & 4
.65 between 2 & 4 w/ throttle plate closed
4.61 between 2 & 4 w/ fully open

I didnt disconnect the throttle cable, I just pressed the gas pedal. It seemed to change smoothly just like the vfaq said. So can I turn the TPS to adjust the numbers or do I have to buy a new one? And sould the throttle closed position be .9 or 1.1? I dont get that.

 

[LaN-]

you really want to fix it (i got mine for under 100 bucks)


BUY a logger its the easiest way to do it

on a side note i had the same problem sometimes its not just the TPS if you cant get the readings right, my throttle cables where loose

 

[Nayr747]

Thanks for the help Lan. I'm planning on getting a logger but I dont think I can afford it yet. Ithat's the only way to fix my car then I guess I might have to. Only other problem is I have no idea how to use it.

I found some new info. I guess that vfaq I posted was only for 1g's. The 2g testing procedure is different and more complicated. Now I'm really confused.
http://www.dsmtalk.com/forums/showpost.php?p=1168059&postcount=22
And from RRE:
Closed TP Switch and TP Sensor Adjustment [2G]

1. Disconnect the connector of the TPS.
2. Connect ohm meter between terminals 3 and 4.
3. Insert a feeler gauge with thickness 0.45mm (.0177 in.) between the throttle stop and the throttle lever.
[Fold a piece of paper in half 4 times if you don't have the feeler -Ed.]
4. Loosen the TPS mounting bolts. Turn the TPS all the way counter
clockwise.
5. Check for continuity in this condition.
6. Slowly turn the TPS clockwise until the point where continuity and
non-continuity is found (pins 3 and 4).
7. Tighten the TPS mounting bolts.
8. Check the voltage between pins 2 and 4 of the TPS with the ignition
switch on, but the engine not started.
9. Standard value: 400 - 1000 mV
10. Remove the feeler gauge.



Then I found this thread:
http://www.dsmtalk.com/forums/showthread.php?t=126886&highlight=tps
that says that the code is just an error. Does anyone know what the deal with this is? How to find if it's just an ecu error?

"It is due to a TPS (Throttle Position Sensor) code and it has done that ever since the car was first obtained. The code is invalid though and I have a copy of the Mitsubishi service bulletin that explains how to fix the computer from throwing this erroneous code."


I also heard a guy on another forum with a 2g say that he got the code right after he went WOT after installing a uicp, bov, and some other stuff wich is exactly what happened to me.

If anyone has any 2g specific info I would really appreciate it.

 

[LaN-]

i'm not sure whats the reading is suppose to be for a 2g (i woudl imagine the same) but just get it as close as you can

when i got my car the TPS was gone on it and i didnt have a logger so i just got it as close as i could untill i got a logger. I doubt anything will hurt mabye a high idle or something but just do it for now untill you get a logger or find someone in your area that has one

 

[Nayr747]

Ok update:

I followed that testing procedure as well as I could. Somehow I did it without taking off the throttle body. I just moved it as far as I could to the left so I could loosen that damn bottom screw on the TPS. Where it says "adjust the TPS right to where the IPS (pins 3 and 4) switches from closed to open." And RRE says "Slowly turn the TPS clockwise until the point where continuity and non-continuity is found (pins 3 and 4)." I didn't know what this meant so I turned the TPS all the way to the left and then started turning it clockwise while the numbers read 0.3, 0.5, 0.etc, until it just read "1 . " which I figured meant what the directions said. This point was just a little to the right of the original position which I marked.

With the feeler gauge still in place, it read: 0.81 between pins 2 & 4 (hope I had the multimeter set the right setting). This # is right in between what they say it should be (0.4 and 1v) so it seems good.

Then I measured between pins 1 & 4 with the feeler still in place and it read 4.58k and it read the same without the gauge. That seems almost perfect too.

Then I measured between 2 & 4 with the throttle closed: 0.70 and fully open: 4.64
I measured using the gas pedal and someone telling me the numbers. The throttle closed seems a little low but the open position seems perfect.

I disconnected the battery to clear the CEL and then started the car up. It idled around 1,200k for a while and then droped to ~750. Whle driving It seemed to have less "bucking" than it did before and seemed a little smoother. After driving for around 5 min. I did a WOT pull in second and third and didn't get a CEL. So it seems to have worked. !

 

[Nayr747]

Ok, I just realized I didnt have the multimeter on the volt setting when testing between 2 & 4. So I put it to volts and got 0.0 That can't be good. So now I'm lost again.