There are many reasons why you may have an faulty ECU. We can save you time and money by testing your ECU DME before spending on costly diagnostic labor and sensors. Below is a helpful guide to determine if you have a faulty ECU.

Fill out the Repair and Return Form and send us your unit today.

Here are the most common symptoms of a bad ECU:

1. Check engine light stays on after resetting
2. Car was jump started on reverse polarity
3. Engine turning off for no reason
4. Water damage or fire damage
5. Apparent loss of spark
6. Apparent loss of injection pulse or fuel pump
7. If you alternator overcharged the battery
8. Intermittent starting problems
9. Overheating ECU

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
• Faulty spark plugs
• Fuel injectors
• Idle control valves
• TDC and RPM sensors
• Air flow or mass flow meter
• Throttle position sensor
• Power supply
• Grounds

If you believe you have a faulty ECU, we can save you time and money by testing your ECU DME for $50 before
spending on costly diagnostic labor and sensors.
Fill out the Repair and Return Form and send us your unit today.