How to test a BMW diff speed sensor E28 E30 E31 E32 E34 E36

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This can be done with the diff on the car. Testing a BMW differential speed sensor with an ohmmeter is a very simple procedure. If your E23/E24/E28/E30/E31/E32/E34/E36 speedo (speedometer) is not working, one of the possible culprits is the speed sensor that's mounted on the differential cover (or the wiring for it). These 80s and 90s BMW models' instrument clusters get their speed signal from the diff sensor (unlike later models that just use ABS sensors on the wheels for that).

Опубликовано:

13 сен 2024

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Комментарии : 7

@BiTurbo228 Год назад

Man now this is what youtube tutorials should be! 30 seconds. Literally just says what it needs to and done. Bravo 👍

@10MIN_BTG_E30 Месяц назад

Hi, i am running an M54B30 engine swap. Normally E46 cars have ABS sensors that connect to the ABS module and send speed info to the ECU. My E30 has no ABS so the ECU doesn't know how fast i'm going. Though there are ABS sensors on the E30. I am currently installing a digital screen in my E30 called "Canchecked". Its a digital display that reads out ECU info and displays it. The screen also has 4 analog inputs. My question is: is it possible to connect an ABS sensor to the analog input to be able to display the speed or not? Thanks

@Rockelement Год назад

Good video! I have a E23 automatic that has on and off problems with the speedometer not working. What is the best way to test this sensor on the diff? Do I have to jack the car up and have it in ""D" to check?

@ClassicAutoLtd 11 месяцев назад

I'd say put it in Neutral and attach an ohmmeter like in the video, then turn the wheels by hand.

@Rockelement 11 месяцев назад

@@ClassicAutoLtd Thanks. Thats what I did.

@bigfresh1 10 месяцев назад

I'd suggest jack both back wheels up (important) and hand rotate the wheel while the car is in Neutral. You should see the resistance of two pins in the differential speed sensor act like they do in this video.