Degradation of ground surface area in older cars honda city idsi 2003-2008

The Honda City IDSI 2003-2008 model is indeed a remarkable car, boasting exceptional fuel economy that outshines its counterparts from the same era. Even after 17 years of use, the engine retains its vigor, seemingly capable of enduring another three decades without major issues.

However, with age comes a concerning issue – the gradual decline in the effectiveness of the grounding surfaces around the engine bay and chassis. This decline is primarily attributed to rust, engine oil spills, and the accumulation of dust and grime.

The resulting increase in resistance effectively splits the car's engine bay electrical grounding surface area into two distinct sections. The battery section and the fuse box each have their own grounding, whereas they should function as a unified entity.

Consequently, poor electrical connections have a considerable adverse impact on the overall engine performance of the Honda City IDSI, manifesting in issues such as:

• Delay gear shift.
• Pickup acceleration delay
• Consume a little more fuel. 
• Sluggish engine performance and sometimes very loud
• Car jerking badly when stopping at the traffic light while braking on gear D (Drive)
• Having difficult to start randomly (As if the battery is dead) empty crank.
• Door lock sometimes difficult to open / lock by the remote-control key.

The above problems arise when the engine sensors, solenoids does not have sufficient current flow to communicate with the ECU / ECM / PCM.

• On the transmission there are sensors and solenoids that must have enough current to communicate effectively with the TCM (Transmission Control Module)
• On the engine side
• MAP Sensor (Mass Absolute Pressure)
• MAF Sensor (Mass Air Flow)
• Coolant Temperature Sensor
• IAT Sensor (Intake Air Temperature)
• DDVT Solenoid
• Knock sensor.
• Oxygen Sensor
• ISCV 
• Camshaft position sensor
• Crankshaft position sensor
• Evaporative valve solenoid
• Throttle position sensor.

All engine sensors require an efficient flow of current to communicate seamlessly with the ECU, ensuring prompt operation of injectors and spark plugs for effective combustion within the engine. This assertion holds particularly true, as after the addition of a single high-quality copper wire for grounding, there was a significant improvement observed. This enhancement made it feel as if the engine had been revitalized, akin to the experience of having a new engine.

1. Gear shift delay - solved.
2. Pick up acceleration - improved significantly feeling can chase any high-speed car.
3. Fuel consumption is better.
4. Car jerks reduce significantly when braking on traffic light while on gear D.