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    Eml light

    Got a eml light on. Then car went into limp mode, check the codes and got p0121 and p0221. I changed the tps sensor next to the oil filter. Drove the car about 5 mins, ran fine. Then slight hesitation around 2500 rpm. Eml light didnt come back on.. Will go for a 30 mins drive next. In case it comes back on, should I change the one under thr air intake or the gas pedal?

    #2
    Check your throttle linkage, make sure it isn't touching anything.
    2003 Carbon Black - Karbonious CSL intake, CSL DME w/MAP, SSV1 headers/Catted Section1/63.5mm Section2, Shrick 280/272 cams, Lang Racing Stage 1 cylinder head, Eibach Pro Street S Coilovers (500#F/600#R), GC Sways, AutoSolutions SSK, Motorsport 3.91 rear diff, BBS RGR wheels, Streamline CSL front bumper

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      #3
      That would be under thr air intake?

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        #4
        Just drove the car for 15 mins. Eml light on. Check engine light on. Limp mode.. Scan car got codes p0121-throttle position sensor/switch A circuit range/performance....p0223-throttle/pedal position sensor/switch B circuit high....p1637-throttle valve position control/ control deviation.. So I'm aiming for the gas pedal next.

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          #5
          Do you have factory throttle body boot clamps? Or are they worm gear clamps? If your throttle linkage is hitting ANYTHING, it will throw those codes. If you ever get stuck, turn the car off, unplug the front TPS sensor, then plug it back in, restart the car. That resets the EML/Limp mode. If the EML is coming on when you go full throttle, I would venture a guess it is the throttle linkage touching something...or your throttle actuator. I have spare TPS and actuator if you end up needing one, PM me.

          2003 Carbon Black - Karbonious CSL intake, CSL DME w/MAP, SSV1 headers/Catted Section1/63.5mm Section2, Shrick 280/272 cams, Lang Racing Stage 1 cylinder head, Eibach Pro Street S Coilovers (500#F/600#R), GC Sways, AutoSolutions SSK, Motorsport 3.91 rear diff, BBS RGR wheels, Streamline CSL front bumper

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            #6
            I believe it's the factory throttle body boot clamps. I will double check tomorrow. Thanks if I need any parts I will let you know.

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              #7
              You want to make sure these parts are unobstructed. They're visible from up top without removing anything on the engine.

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              2002 Topasblau M3 - Coupe - 6MT - Karbonius CSL Airbox - MSS54HP Conversion - Kassel MAP - SSV1 - HJS - PCS Tune - Beisan - MK60 Swap - ZCP Rack - Nogaros - AutoSolutions - 996 Brembos - Slon - CMP - VinceBar - Koni - Eibach - BlueBus - Journal

              2012 Alpinweiss 128i - Coupe - 6AT - Slicktop - Manual Seats - Daily - Journal

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                #8
                Check if any of the throttle linkages are obstructed. Then change the TPS next to the oil filter housing first, then the gas pedal, and finally the TPS under the intake manifold. Had the same issue on mine and it was the TPS under the intake manifold.
                '06 BMW M3 6MT Coupe - TiAg/Imola
                '99 BMW M3 5MT Coupe - Estoril/Dove
                '00 Honda Civic Si - Electron Blue Pearl/Black
                '11 Toyota Tacoma T/X TRD - Magnetic Grey/Grey

                Instagram: @6spd_M3 | @midwesteuroparts



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                  #9
                  I already changed the one next to the oil filter, im going to change the gas pedal tomorrow.

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                    #10
                    Ok so I changes the gas pedal. Same problem. So all there thats left is the one under the intake? Is it hard to take the intake off?

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                      #11
                      Ok I finally change the sensor under the intake, car is running good now. Drove about 30 mins. No eml light.

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                        #12
                        Cleaned out my throttle bodies aswell. Thinking of getting a oil catch can.

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                          #13
                          Now I have a new problem . idle surge, and the car stalls when coming to a stop. If the rpm is above 2k, and I put the car in neutral, rpm drops and stalls. I have to tap the gas a bit to prevent it from stalling. Only happens when coming to a stop. If the car is in neutral and I rev. Its fine, no stalling.
                          Last edited by M3powerzz; 09-20-2020, 09:48 AM.

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                            #14
                            Originally posted by M3powerzz View Post
                            Now I have a new problem . idle surge, and the car stalls when coming to a stop. If the rpm is above 2k, and I put the car in neutral, rpm drops and stalls. I have to tap the gas a bit to prevent it from stalling. Only happens when coming to a stop. If the car is in neutral and I rev. Its fine, no stalling.
                            Check the last thread i started about stalling at lights in neutral. Sounds like the same symptoms i had and the clutch switch fixed my issues.

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                              #15
                              When you let off the gas, the IAC should open up to stop the stalling but it sounds like it isn't. TPS could've been a problem also but the stalling seems IAC related. Take a look at the PIDs to make sure. Seem what % it's at when you let off the throttle while coasting.
                              This is my Unbuild Journal and why we need an oil thread
                              https://nam3forum.com/forums/forum/m...nbuild-journal

                              "Do it right once or do it twice"

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