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Characteristics of Damage to the Car ECU:
The car engine is difficult to start using a starter.
Fuel usage becomes wasteful even though the distance is not too far.
When driving, you will feel stuck in the engine.
The car feels heavier when driving because of the reduction in engine power.
The check engine light on the dashboard display turns on and off completely by itself

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Many other symptoms may occur that can drastically lead to an ECU failure such as:

Erratic idle
Stalling
Poor running condition
Excessive fuel usage
We recommend testing or replacing the following:

Ignition coils or ignition module
DME Relay or the Main Relay -
Faulty spark plugs
Fuel injectors
Idle control valves
TDC and RPM reference sensors -
Air flow or mass flow meter
Throttle position sensor

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Here are the most common symptoms of a bad ECU:


Check Engine Light stays on after resetting 

Car was jump started on reverse polarity

Engine turning off for no reason

Water Damage or Fire Damage on the ECU

Apparent loss of spark

Apparent loss of injection pulse or fuel pump

Intermittent starting problems

Overheating ECU

ECU has Broken Pins

Loss of communication between the ECU and the Scanner

A control module memory checksum error

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5 Causes of Engine ECU Failure (Why Does an ECM Go Bad?)

Dead Battery.

Corrosion.

Low Voltage.

Bad Jump Starting.

Bad Starter

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