For years, a leaking E30 power steering rack left you with three choices: reseal it yourself, buy a rebuilt or exchange unit, or “upgrade” to a different rack, such as the quicker Z3 rack with an adapter kit. BMW’s own exchange rack (32 13 1 127 793) is no longer available. Four aftermarket brands...
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This is the original FIA homologation form for the E30 BMW 325i, A-5292. Homologation papers are the official record of a car as built, and they decide what may be raced and which competition parts are allowed. The form was issued by the FISA through the German ONS and was valid in Group A...
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Here are scans of the instruction manuals for the Baum Tools iSCAN, a hand-held diagnostic scanner for European cars. The manuals refer to the scanner as both the iSCAN and the CS2000. It uses a plug-in memory module and adapter cable for each make, and each make came with its own manual: BMW, Mercedes-Benz,...
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Here are the PDF scans of two factory radio manuals. One is for the Pioneer KE-81 ZBM, and the other for the KE-83 ZBM. Pioneer KE-81 ZBM, Anti-Theft Radio Pioneer KE-83 ZBM, CD-Ready Radio
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For the E30 A/C system, the main line-fitting O-rings are standard SAE sized. BMW confusingly identifies them by the O-ring’s approximate ID rather than the hose size and does so in mm. Because of the standard SAE sizing, you can can order oring kits much more widely and readily from suppliers like four seasons...
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Binary comparison of Bosch Motronic 1.3 173 and 525 ECUs, including coolant enrichment, cranking fuel and ignition, and every identified closed-loop idle-control table.
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A practical guide to the full E30 OBC: its displays, sensor inputs, trip calculations, speed warning, temperature alert, CODE immobilizer, coding plug, and built-in checks.
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How the E30 heater and air-conditioning systems route air, control refrigerant pressure, operate the auxiliary fan, and respond to the dashboard controls.
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A system-level explanation of the Bosch Motronic inputs, fuel calculations, ignition mapping, idle control, and emissions hardware used across several BMW E30 applications.
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The BMW ETK for the E30 is generally excellent, but it falls short when it comes to A/C part number references. This is especially true for M20-powered E30s, which were equipped with three different compressors – Bosch, Seiko, and Denso. While the Bosch and Seiko setups share the same A/C lines, the Denso configuration...
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