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Computer Diagnosis

So there's something not quite right about the way your vehicle is driving, or you've got a warning light on your dashboard that was blinking at you yesterday and now it is on steady.

What makes a warning light come on?
Today's vehicles are manufactured with complex inter-related systems. On-board computers continuously monitor and store information concerning the performance of these systems. A warning light comes on because the computer has sensed a signal from one of the systems or components that has gone outside of its normal operating range. The computer then sends a signal to turn on the light to let you know something is wrong!

Some of the potential causes for a check warning light are not properly tightening your gas cap to engine, transmission or braking system performance issues. While warning lights can go on and the car still appears to be driving "fine", ignoring some lights can lead to serious issues, such as engine damage or other component failure. In some instances, this can be a safety hazard. That's why it is recommended to be safe (give yourself peace of mind) and have your car looked at by a certified professional as soon as possible.

1. RETRIEVE DATA - A full functioning scan tool is used to perform an onboard computer system analysis in order to retrieve the following:

  • Computer codes
  • Freeze frame data
  • Computer software version numbers
  • Critical sensor data and status information

2. VERIFICATION TESTING - Verification tests determine if systems meet proper specifications. These tests may include an analysis of:

  • Engine vacuum and back pressure
  • Mechanical and electrical engine timing
  • Ignition system
  • Fuel system
  • Emissions system

3. PINPOINT TESTING - All manufacturers require that circuit or component pinpoint testing is done in order to make an absolute diagnostic determination. These actions involve:

  • Working through wiring diagrams
  • Performing electrical and/or mechanical tests
  • Performing bi-directional control tests
  • Visual inspections of suspect areas
4. RESEARCH TECHNICAL SERVICE BULLETINS - Technical Service Bulletins and hotline information will indicate if the problem has been determined to be a pattern failure, meaning that it is a known issue that occurs with a particular type of vehicle. This does not eliminate the need for testing, as other systems must meet specifications before a service bulletin procedure should be performed.

5. CAR REPAIR - This may involve multiple actions such as:

  • Parts replacement
  • Cleaning of passages, connections and/or components
  • Performing manufacturer technical service bulletin updates
  • Updating of vehicle’s computer software
  • Wiring repair or replacement

6. VERIFY REPAIR - Once all necessary actions have been taken, the vehicle must be retested to verify that the repair is complete and has achieved the proper results.

How long will it take to diagnose my problem?
In most cases, we can actually find AND fix the problem in the same day.

Do I need an appointment? Yes

How much will it cost?
Diagnostics are handled at an hourly or procedural rate. A Check Engine Light diagnostic will often be at a fixed rate, unless additional diagnostic procedures are needed.

Why does my parts store offer to "do my check engine light" for free?
Parts stores capabilities are limited to only reading the stored trouble codes, but they do not then perform the diagnostic procedures to determine what is exactly required to fix your vehicle.

What are examples of drive ability issues that require diagnostics?
Typical drive ability issues that require a diagnosis on your vehicle are:

  • Any warning lights on the dash that are illuminated (Check Engine Light, ABS, etc.)
  • Emissions failures
  • Engine or transmission performance
  • Steering and ride control

ProCharger

Dyno Testing and Tuning DynoJet Dyno Gresham Oregon

We Carry Interstate Batteries

 

 

13 Month 13,000 Mile Limited Warranty

Auto Repair Specialties

2533 NW Division Street
Gresham, OR 97030

Phone (503) 667-8135

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