Articles

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11 resources

• ESIM explained: test modes and system boundaries

  Understand the engine-off and engine-running modes described in GoTech’s ESIM article, with a separate 2014 Dodge Dart refueling case.

• GM 3.6L misfire with no check-engine light

  Follow a 2014 Impala 3.6L misfire without codes: bank 1 fuel trims, compression, vacuum and cam/crank tests. See what each finding established.

• GM 3.6L reluctor ring: when the chains aren’t the answer

  Still investigating GM 3.6L correlation codes? Compare the reluctor-ring photos and follow historical GM bulletin PIP3423P’s conditions before choosing a repair.

• GM 3.6L timing chain problems: what to check

  GM 3.6L timing-chain symptoms and P0008, P0009, P0016–P0019: find your bank and camshaft, work through the checks, then follow the test or repair guide.

• P0171 and P0174 Lean Trouble Codes

  Learn what P0171 and P0174 trouble codes mean, their symptoms, how to diagnose, and how to correct these codes

• P0172 and P0175 Rich Trouble Codes

  Learn what P0172 and P0175 trouble codes mean, their symptoms, how to diagnose, and how to correct these codes

• P0300 Misfire Trouble Code

  Learn what a P0300 trouble code means, its symptoms, how to diagnose, and how to clear the diagnostic trouble code

• Purge/seal EVAP: understand the monitor sequence

  Follow vacuum generation, sealing, pressure observation and recovery in the GoTech purge/seal explanation. Keep application-specific thresholds separate.

• Split EVAP systems: know which section was tested

  Understand the isolation boundary described in GoTech’s split purge/seal article and why one section’s test cannot establish a whole-system result.

• What is EVAP? Vapor storage, purge and venting

  Learn the roles in a purge/seal EVAP system, then choose a relevant path for repeated nozzle shutoff, P0446 or smoke-test coverage.

• What is Variable Valve Timing (VVT)

  VVT is a system designed to adjust the timing of an engines valves to optimize performance and lower emissions throughout the engines entire operating range