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E30 testing all ABS speed sensors the easy way

0
May 4, 2025

Most places will tell you to try to track down each abs speed sensor connector, but really, you can just check all sensors right at the ABS computer module. To get to this module and plug only takes removing 3 half turn screws. With a multimeter you can check resistance on connector pins: 4...
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E30 M20 fixing upper timing cover stripped bolt

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May 4, 2025

By now, most M20 engines have undergone multiple timing belt services. As part of this process, the upper timing cover is typically removed. Two bolts secure the cover to the aluminum cylinder head, and one of them in particular, the smaller M6 bolt is notorious for stripping its threads. The distributor cap depends on...
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E30 dual double trunk illumination lights

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February 2, 2025

The E30 is provisioned for two trunk lights, but only in very rare circumstances was it actually ever fitted with both. On all North American E30’s, there is only one trunk illumination light, normally a 5W festoon bulb. Provisioned in this context means, that there is already a cut out in the trunk to...
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E30 ABS Pedal pulsating at idle problem

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January 10, 2025

If you’re experiencing an ABS issue where the brake pedal causes the ABS to pulsate or activate even when the vehicle is idle, the likely culprit is a failed ABS module relay. The good news is that these relays are straightforward to replace. There are three relays that control the entire ABS system: An...
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Child car seat safety in an E30

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March 24, 2025
Child car seat safety in an E30

How to Safely Install Modern Car Seats in a BMW E30 Sharing the joy of classic car ownership with...
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E30 early and late cruise control cables are the same (65711371394 = 65711386243)

1
January 10, 2025

The ETK would have you believe that there are different cruise control cables for early and late E30’s, but...
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Troubleshooting E30 Cruise Control Workflow

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December 21, 2024

These are the factory instructions to testing and troubleshooting the E30 cruise control system with additional clarification:   Using...
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E30 Throttle Body Plate Idle Screw Adjustment

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December 20, 2024

There is never a reason to adjust the idle screw on a fuel-injected E30. Idle should never be mechanically...
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