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Counter to popular narrative on E30 forums (based on self perpetuating hearsay), there are variant code differences between manual and auto E30 ECU’s and M1.3 didn’t always post date M1.1 ECU’s. The bad news is that no tuner has a fully disassembled dump of the ECU source code. Most just take the post compiled...
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The grommet for the pre-1988 E30 is NLA, but its nothing a bit of TPU (95a or softer) can’t solve by 3D printed. Step file: E30BatteryVentBoxGrommet
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There are no aftermarkets to the now years backlogged E30 front hub bearing dust caps. There are two options: 1. Try to save the ones currently on your car for reuse by using a specialized dust cap tool to minimize damage during removal: Snap on GCP10, also available from many many other makers in...
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One of the more frustrating parts about doing a front wheel bearing on an E30 is when the inner race separates from the rest of the hub. Normally this requires cutting a slot into the inner race or playing with thermal expansion and contraction to get it off. The tool to make this situation...
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E30 Cowcatcher foglights are NLA and fairly difficult to find forsale, so for those that have ones that are intact, here are the protection film measurements that you can use:
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If you ever wondered how the E30 VIN number decodes, below are the instructions directly from BMW. What you wont find anywhere else is the 11th digit manufacturing plant information for cars old enough to start with a number instead of a letter. Here it is: Dingolfing – 1,2,3,4,5,6,7,9, B, D Munich – 8,...
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Here’s how to diagnose a bad wheel bearing by checking for side-to-side play, which can help isolate the issue from other suspension components like tie rods, control arms or strut mounts. Diagnose a Bad Wheel Bearing: Inspect for Play: Check the wheel for side-to-side play by rocking it at the 3 and 9 o’clock...
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Maintaining the charging system is vital for any vehicle’s reliability. This streamlined guide covers the essential steps for a thorough evaluation. Required Tools: Multimeter with DC voltage, min/max, and AC modes Alligator clips Battery Voltage Check: Switch the multimeter to DC voltage mode. Attach the red lead to the positive terminal and the...
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After 30+ years the tiny seals in the E30 AC system should be changed; its one of the most common leak points and often missed because any manifold measurements are taken with the valves in use. Nearly all Schrader valve cores, like the ones found on the E30 R12 lines are replaceable. As not...
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On many pre-1988 E30s, the lines that originate from and lead to the reservoir (low pressure) terminate in banjo connections that consist of a hose and a band clamp. The two lines are: 16X22MM 32411131545 12X18MM 32411131524 The hoses adhere to a DIN standard that is NBR/CR: NBR inner, single textile reinforcement, CR outer...
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