Throttle Position Sensor...
Hi everyone,
Having some more issues with the Pajero, managed to get it starting properly with a replaced battery and starter motor.... Now still having some issues with the car displaying a fault code and throwing the car into limp mode....
Hoping that replacing a faulty TPS might fix the issue... Have cleaned the throttle body and re-positioned the sensor which has made the fault code come up a lot less often and the cars gear shifts are alot smoother which is again making me think its faulty...
Trying to find out where to possibly buy one from.. have seen them cheap on Amazon hoping to order from the US and it takes quite some time for any mail to arrive in Grand Cayman as im unable to source on locally...
Can anyone supply me with a part number and also what diffrence is there between $10 TPS replacements and $250 its hard to gauge.. Been looking at this one on amazon since it's so cheap to help try trouble shoot if it is in fact the TPS...
I've been playing with the
I've been playing with the TPS on the actual throttle body the one held on my two alen key bolts which can be changed in alignment..... Mine was marked by white paint marker and I took it off to check the spring etc was functioning ok I then when reinstalling it decided to put it slightly diffrent to the orginal alignment and found that this helped improve my gear changes which suddenly became smooth it's almost like a idle screw adjuster one way will bring up the engine revs on idle and another way too much the car will actually stall and immediately have the check engine light...
Currently the car still does indeed get this check like but its been once after 2 days of driving not 4-5 times per 20-30min drive, so I'm feeling like all these issues must be with the TPS...
Which do you mean that's connected to the actual gas pedal assembly where is that located exactly ?
I've got a 1998 iO my rev's wont limit to 2-3k only thought they got to max about 4.5k and it generally happens after driving the car for a few mins and on a gear change or shortly after it usually goes into limp more dont know if thats purely coincidence though.
It's probably a GDI engine...
Which do you mean that's connected to the actual gas pedal assembly where is that located exactly ?
GDI engines are "drive by wire" - there is no throttle cable linking the throttle pedal to the throttle body, the linkage is electronic, a sensor physically mounted on the pedal assembly sends an electronic signal to the ECU which then controls the throttle plate via a servo motor.
I belive the model I have has
I belive the model I have has one that looks like this on the trottle body and have yet to hunt down the one thats near the actual pedal... do you think the one near the pedal is the one at fault not on the actual throttle body if faulty would that cause an 91 fault code which points to the throttle servo ? not to the pedal ?
cheers for your input its been a great help the cars slowly getting there!
Trent
what should I be looking at
what should I be looking at with the throttle valve system is this diffrent from the actual throttle body ? I've tried cleaning the butterfly and the throttle body when it was off the car and have tried to reposition the TPS sensor on the throttle body which has improved my gear shifts which where very hard and sharp changes to now smoother changes so this is making me think the issue is the TPS sensor... I'll look for an issue with the throttle valve system though, thanks for the reply!!
.
The throttle valve system is the electronic control system that links the throttle pedal to the throttle plate - the sensor on the pedal assembly, the controller, the servo motor on the throttle body and the associated wiring - I'm too lazy to go hunt down the details in the manual but if I recall correctly, a code 91 results when the ECU sees voltage from the throttle position sensor that does not match what it is expecting based on the throttle pedal sensor - the problem can range from defective components to something physically preventing the throttle plate from moving.
The manual has enough detail that if you suspect a sensor to be defective you can test it to be sure, and if all else fails, you can go through the tests and test each sensor one by one to determine if any one is defective, it also tells you how to adjust the various sensors, when adjustment is possible or needed.
been flicking through the
been flicking through the manuals and still cannot find code 91 or anything to do with the throttle sensors :( so it's a clash between two sensors and looks like i need to find out how to test them both and make sure their both working correctly before i go ahead purchasing anything..
its a huge pain to try buy anything here in grand cayman it always has to come from the US and 22% tax applied on top, not to mention how slow post is here...
Section 13A-36
Assuming once more that you are dealing with a GDI engined vehicle, AND that you're looking at the correct manual, it'll be in section 13A-36.
Also since the Pajero iO was never sold in the US, your chances of finding parts there are not very good, it's not impossible, as several of the parts were used on other vehicles and those are available if you can identify which vehicle they fit - South West Motors in Texas can usually supply parts if you give them a part number.
TREID, the sensor I'm
TREID, the sensor I'm referring to is found on the actual gas pedal assembly, it should be visible underneath, follow your gas pedal and you'll see that the sensor is the one attached to the spring assembly and plugged into the socket (with colored wires). At this point I'm not positive if this is a possible cause for your issue.
FORDEM is right our iOs have electronic throttle systems hence the electronic sensor instead of a cable. Given (Fordem's) explanation, in my humble understanding, it seems possible that this sensor (might be a potential issue), please agree or disagree if I'm wrong.
TREID, there is a video on youtube that refers to the cleaning of the throttle valve body for GDI engines I believe might be helpful in case you missed anything during your own process of cleaning it, also refers to a magnet replacement in the assembly if required..
As for my situation, we are at a loss, somehow going along with our best guess of which sensor might be faulty, trying to find a part (overseas) and getting prices, such a near impossible situation of finding parts here as well, in spite of many wreck and surplus shops, there's very little GDI engines that get here..
MR 578865- this was the part number provided to me by a fellow iO brother for reference. Also lucky for you that you have an error code to use as reference. Since our unit has been converted to LHD we've been trying to locate the OBD outlet to do a scan but couldn't find it. We're not sure of they've chopped it off :((( of relocated it, I've been checking underneath the electricals nbut no lock:((
Dear, i research Polish
Dear,
i research Polish Carisma Forum's and that could be your reason for 91 error
https://
In some cases, the magnets stick off ( they are glued only ) . MIne was right, so i did as below.
here You have the thread - translated by google translator - if something isn;'t clear - let me know please.
i Fix right position on mine TPS follow this thread and more then year i have no problem with.
1. If you have free access to the TPS screws, then you will do the job without removing the throttle, if not, then access the screws by removing the throttle
2. You insert 2 wires into the TPS plug (in the middle 2 pins) parallel to the wires (they must come in about 15 mm) in this way you are sure to contact the contacts. For wires you connect the wires of the meter, the meter sets the voltage to the best value in the range 0-2V
3. Disconnect the throttle actuator, TPS connected
4. turn on ignition - without firing course
5. The voltage will be about 1-1.5V or -1 to -1.5 depending on whether you got polarized or not - it does not matter. If there is no voltage - correct wires inserted with the plug
6. You close the throttle with your finger - the meter should appear 0.5 V (or -0.5V but as I mentioned it does not matter)
7. If the voltage is outside the range of 0.48-0.52 V (or -0.48 - -0.52 V) you loosen the screws and set the TPSa so that after tightening, the value on the meter at the throttle closed finger is in the range 0 , 48-0.52V (or -0.48 - -0.52 V). This requires a lot of precision, because by tightening the screws the reading changes and you have to feel how much and how to set before tightening, so that after tightening hit the right position.
8. if the voltage reading changes linearly depending on the damper swing in the range of 0.5-4.5 V (or of course - does not matter;)) (in the range of the meter serving those values of course) - if there are jumps Voltage or worse voltage drops to some extent instead of rising - TPS for replacement or if it is throttle with tip 003 for repair. TPS 002 is not very suitable for repair - it is very difficult to decompose it so that it can be repaired later;)
9. how is everything OK, you pull out the wires, put everything to buy, reset the ECU (disconnect the battery - for 10s.
10. throttle adaptation - switch on the ignition for 1 second without starting the engine and turning off for 15 sec.
11. ready.
Syndicate
Hi there! It sounds like
Hi there!
It sounds like we're going through similar challenges brother!
-check engine light
-rev limited to 2 or 3k
*best guess TPS.
Although in my case, we (think) after having done actual testing, that the faulty sensor is the one connected to the gas pedal assembly (confusing enough others call it a TPS too) but it is different from the TPS in the throttle body.
What model is your iO?