Search for and view Porsche 911 maintenance procedures organized by model and category.
HOW TO REPLACE YOUR IGNITION SWITCH 1. Start by disconnecting the battery 2. Remove the steering wheel by first removing the center section, which is simply snapped into place 3. Use a 23 socket with an extension and unscrew the center nut 4. Remove...
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HOW THE FLOWMETER WORKS The airflow meter plays a vital role in the engine's proper operation; among other things, it regulates the air-fuel mixture, which must always be perfectly balanced according to the engine's needs and operating cond...
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ABOUT THE REAR SPOILER'S QUIRKS ON THE C4 Here is one of the causes that can interfere with the proper operation of the rear aileron control. It is the control box located under the passenger seat and Attach it through its plastic protectiv...
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IN CASE THE DME RELAY FAILS If your DME relay fails while you're on the road (+12 Volts) (on terminal 7 of the fuel pump power relay), don't panic—open the fuse box located on the dashboard in the trunk. Remove the relay and connect termina...
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RED ALL-WHEEL DRIVE LIGHT STAYS ON ON THE C4 Here's the cause of the sporadic warning (red all-wheel drive light + red ABS light + buzzer) on my '89 C4. In short, it's enough to make you want to bang your head against the wall. In fact, it...
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WHERE IS THE FAMOUS DME RELAY LOCATED? This infamous DME relay is the cause of a few breakdowns that leave you stranded. In fact, it controls the entire system that manages fuel injection and ignition. It’s very easy to replace, but you sti...
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HOT START PROBLEM This is the kind of breakdown that's really annoying, especially when you're stuck in the left lane of a highway in the middle of a traffic jam. Symptom: The idle speed increases to between 1,800 and 2,000 rpm more or less...
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BATTERY CHARGING PROBLEM ON THE C4 If, like me, you’re having a charging problem with your battery (new battery, new alternator and regulator, new ground strap), you need to check that the alternator is properly energized by looking at the...
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