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Honda S2000 Boost Gauge

Common Issues with a Honda S2000 Boost Gauge

Designed to ensure that your car's turbo is running at peak levels, the Honda S2000 boost gauge is important in monitoring your supercharger or turbocharger's performance. Basically, a high-performance engine needs more compressed air to allow for more fuel to ignite, and a boost gauge allows you to monitor if the right amount of air is injected into the combustion chamber. Boost gauges are also prone to breakdown. Its pressure sensor mechanism and vacuum lines may fail, causing an incorrect boost value, which can cause irreversible damage to your engine. Here are some of the most common boost gauge issues, and the possible factors behind them:

Dead display

If you notice that your boost gauge's panel isn't lighting up, it could be due to faulty wiring or relays. Pinched wires, loose relays, and improper installation are the most common reasons why boost gauge displays don't work. Inspect the wires connected to the boost gauge, all the way to the pressure sensor and fuse box. Check for pinched wires and loosen them up. Make sure to run through the relays and fuses and then replace burnt ones immediately. If the boost gauge still doesn't work, consider replacing it with a brand new one.

Invalid pressure reading

When you see that your boost gauge isn't giving you a precise pressure reading, it could be due to a bad or leaking vacuum line. You may experience rough idling, a choking turbocharger, or stalling while driving at highway speeds. Make sure to check the hoses connected to the boost gauge and engine. Cracked or worn-out pressure lines may cause the gauge to give out invalid readings. Immediately replace worn-out lines and secure them tightly. If your boost gauge still gives you false pressure readings, check your car's turbo or supercharger system for possible problems.

Error and fault codes

Fault and error codes are caused by several factors, including a faulty pressure sensor. Electronic boost gauges monitor the boost produced by the engine's pressure sensor, and if the air output and compression is lower than normal, fault codes may be generated. Refer to your owner's manual to interpret the error codes and perform the troubleshooting recommended by the manufacturer.

  • How to Keep Your Honda S2000 Boost Gauge in Great Condition 27 February 2013

    Commonly found on the driver's side pillar, radio slot, or dashboard, the Honda S2000 boost gauge is an important driver's aid in monitoring a turbocharger's performance. This gauge allows you to check the increases in air pressure being generated by your engine's turbocharger. An increase in air pressure can result in a thin combustion, while a decrease in air pressure can lead to a thick or fuel-rich combustion. These types of condition can damage your engine's internal components. To keep your boost gauge in great condition, routine maintenance is needed. Here are some tips to help you keep your Honda S2000's boost gauge in great condition:


    Check the connections.


    When doing routine maintenance on your boost gauge, it's important to start with the connections. First, check all the wires, relays, and fuses connected to it. Make sure that there are no loose or pinched wires. You can use a voltmeter to check if all the fuses and relays are working. Busted fuses and relays must be replaced immediately to avoid problems later on.


    Inspect all the hoses and fittings.


    Boost gauges rely on vacuum hoses and pressure fittings to accurately measure the air pressure flowing into the engine's combustion chamber. A leaky, worn-out, or loose vacuum line can lead the boost gauge to give out an incorrect pressure reading. Check the hoses and fittings for any signs of leaks or damage. Inspect the fittings and see if they are properly secured. Cracked or worn-out vacuum hoses must be replaced immediately with a new one. Fittings which are showing signs of corrosion also need replacement. After replacing these parts, make sure to secure them properly to avoid leaks and pressure loss.


    Monitor and calibrate it if necessary.


    Once you've checked all the wires, vacuum hoses, and pressure fittings, test the boost gauge. Get your car's stock boost pressure from the owner's manual and run it at a wide open throttle. The peak boost pressure given by your boost gauge should match the stock number specified by the vehicle's manufacturer. If the numbers don't match, you need to calibrate your boost gauge. For mechanical boost gauges, interchanging the vacuum lines will help the boost gauge get the right amount of pressure. Electronic boost gauges generate code which needs interpretation. Refer to your owner's manual for the list of codes and on how to re-calibrate your boost gauge.