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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The ETK would have you believe that there are different cruise control cables for early and late E30’s, but that’s not true, 65711386243 supersedes 65711371394 and will fit both early and late cars.   One small note about orientating the cable correctly:   Reference this post on how to trouble shoot your cruise control,...
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These are the factory instructions to testing and troubleshooting the E30 cruise control system with additional clarification:   Using backprobes like this fit perfectly into the pin holes of the blue cruise control module plug:   *The English translation was incorrect for the last step and so it has been overwritten in green to...
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There is never a reason to adjust the idle screw on a fuel-injected E30. Idle should never be mechanically adjusted using this screw or the AFM idle bypass screw. The Motronic ECU electronically controls the idle via the Idle Control Valve (ICV). The idle screw only opens the throttle plate by about the thickness...
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When buying or refurbishing E30 seats there are many spots to look out for: Seat top mounting tabs: The seat top is held together to the seat bottom by way of two mounting ears, and these fatigue and break.   Seat Frame Base: There are multiple area to look out for where the sheet...
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Some folding sport seats develop a noticeable back-and-forth rocking motion over time. This is primarily caused by wear in the rotating mounting lever, which creates clearance in the seat rail mounting arms. The resulting play is actually as much diagonal as it is forward and backward. While the user perceives it as a back-and-forth...
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All E30s, if unmodified, should have a basic tool set located inside the trunk: All tools were made by Heyco and stamped with the BMW logo. The kit included: 17/19mm wrench 12/13mm wrench 8/10mm wrench Pliers Allen key Screwdriver with a reversible blade (Phillips and flathead) Spark plug tool Plastic manual window crank (in...
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There are two main automotive fuel standards: one commonly referenced in North America (SAE) and the other in Europe (DIN). While these standards overlap in many aspects, they use very different naming conventions. Fuel hoses are typically categorized by pressure (low or high), permeation levels (low or high), and whether they are designed for...
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AFM to Airbox Gasket E30: Throttle body to Intake Manifold Gasket E30: Valve cover gasket E30:    
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Per the BMW E30 Factory Manual:   Per Bentley manual: To set between 0.20mm and 0.60mm:   Failure Methods: It is commonly stated online that E30 TPS failures are caused by oil saturation. Crankcase oil can migrate down the throttle body shaft bearings and into the TPS, leading some to recommend drilling a hole...
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