ThunderMax Basic Troubleshooting - Manual (Page 3)

Still Problems, What Now?
Correct Map Loaded?

After selection of a map from the Map Database, the map must be LOADED into the module.

Link and select Main MenuMap EditingWrite Module Maps and Settings
Did issues exist before the ThunderMax installation?

The ThunderMax will greatly improve your engines operation.
 The ThunderMax Module cannot “fix” faults located elsewhere in the motorcycle.
Can I Clean My Oxygen Sensors?

You can clean the sensors with a product like CRC brand "QD electronic cleaner" (Permatex® part# 24378) then
reinstall sensors and re-test.
Engine Ran Great but Starting to Run Poorly

Old, spoiled or bad gas - drain and replace

Low octane fuel – refill with highest Octane ALWAYS!!!!!

Fuel pressure low – Check Fuel Pressure

Fuel filter plugged – Service fuel filter every 25,000 miles

Electrical connections or corrosion – Service all connections

Throttle Position Sensor Faulty - Replace TPS

IAC motor Faulty – Replace IAC motor.

Head Temperature Sensor Faulty – Replace sensor

Cracks in exhaust system – inspect

Intake air leaks – inspect

Dirty throttle body - clean

Electrical short - inspect all wiring for abrasion or heat damage.
Precautions

Never directly wash the ECM, connectors or fuse compartments with water!

Do not use fuel octane boosters.
Sources for more information
In addition for issues unrelated to the engine management system we receive calls about other electronic or electrical issues
on motorcycles which ThunderMax has no association with. You will need the Harley-Davidson
®
Electrical Diagnostic Manual
to sort out these types of problems with your motorcycle. These manuals are model-specific and contain valuable information
in troubleshooting electrical issues with your motorcycle. The troubleshooting charts that follow are set up to aid the
technician in solving issues that you may be experiencing. If the problem is not related to the ECM, you will need to refer to
the service and diagnostic manuals for the specific model in question. We receive calls about faulty security systems, lights,
radios and CB’s which ThunderMax has no association with on your motorcycle.