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Case Studies

8. Flickering Lights | Mazda

Flickering Headlights | Mazda 🚗 2016 Mazda 3 When I turn the low beams on, all exterior lights start to flicker, including the low beams. Here is a video of what was going on. 🩺 Diagnosis When the low beam relay gets disconnected, lights start to work fine (except the...

7. Misfire | Subaru Forester

Misfire | Subaru Forester 🚗 2011 Subaru Forester 2.5L Car came in misfiring on all 4 cylinders at idle. Customer previously has already replaced the spark plugs, coils, checked compression, replaced the front O2 Sensor, and the MAF Sensor.     🩺 Diagnosis...

6. Secondary Air Injection, P2440 | Buick Lacrosse

Secondary Air Injection, P2440 | Buick LaCrosse 🚗 2007 Buick LaCrosse The car came in with check engine light and a code P2440 Secondary Air Injection System Switching Valve stuck open   🩺 Diagnosis Secondary Air System on this vehicle includes: secondary air pump air...

5. No Start | Steering Lock Issue | Nissan Altima

No Start| Steering Lock Issue | Nissan Altima 🚗 2009 Nissan Altima with Intelligent Key Ignition won’t turn on and the car won’t start   🩺 Diagnosis Tested the operation of the key by locking all the doors from the key and pressing the keyless entry button on the...

4. RPM Surging with A/C On | 2004 GMC Envoy

Surging | GMC Envoy   🚗 2004 GMC Envoy 4.2 When A/C is turned ON, the engine starts surging (rpms go up and down). With A/C turned off, seemed  to idle normally. Customer provided no car history.   🩺 Diagnosis Could it be that the A/C compressor builds up so...

3. No Start | 2008 Honda CRV

No Start | Honda CRV  🚗 2008 Honda CRV Car came in with a crank-but-no-start condition. A customer has bought it like this from the auction, so no history is available.   🩺 Diagnosis Security light was off, indicating that it’s not a security-related issue. First...

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