4 Problems and How to Fix Tachometer

The engine is the heart of the car and RPM (Revolutions Per Minute) is a unit of measure proverbial heartbeat.

Engine RPM is an indicator derived from the engine power. While the instrument to measure the RPM is the tachometer.

As a high pulse rate is bad for the heart, high RPM level is not good for the engine. High RPM can lead to overheating and engine damage.

For the efficiency of the engine, it is important for the driver to move the gears in accordance with the values RPM safe.

That is why, the tachometer is an important part that must always function properly.

Tachometer help monitor engine condition and diagnose the possibility of problems.

Working Principle

Tachometer shows engine RPM by measuring the rotation of the crankshaft.

Measurement is done by installing a device resembling a miniature electric generator which generates electrical current that varies according to the engine rotation speed.

The resulting electrical current is then converted into RPM.

Basic Problems and How Handling

There are several problems that can interfere with the performance of the tachometer. These types of problems can generally be divided into two categories, mechanical and electronic.

Of the various types of damage to the car, including the tachometer problem most easily overcome.

Here are some problems on the tachometer and how to solve them.

1. Off Screen

This condition mainly occurs in the digital tachometer.

Not the appearance of on-screen display can be caused by problems with the LED screen itself.

Tachometer that has long been used to damage the LED.

If true LED broken into different causes of problems, you should immediately replace it with a new screen.

2. Check Cable Connection

Sometimes the cable connections have rust or disconnected so make tachometer does not work.

The classic symptoms due to a problem in the wiring circuit is characterized by chaotic tachometer reading or abnormal.

Check the tachometer cable circuits based on the manual. Track cable connections from the display tachometer to the engine parts.

Check the connection with the resources and the engine control unit. Make sure tachometer properly grounded.

Fix loose connections and replace corroded wires.

3. Calibration Issues

Another problem that may arise is the tachometer calibration that is out of sync.

Improper calibration makes reading on the tachometer is higher or lower than the actual conditions.

This problem can be solved by re-calibration.

4. Checking with Tachometer Replacement

To check whether there is a problem in the wiring or other internal problems, post tachometer substitute for testing.

If the tachometer replacement turned out to work, then the problem lies in the old tachometer.

If you are not able to handle it alone, seek immediate repair shop or other professionals.