by Mike Lundgren | Jul 30, 2026 | Diagnostics
When diagnosing a no-start vehicle, one of the most critical early decisions is determining whether the immobilizer system is actually preventing the engine from starting. Many technicians waste valuable time chasing immobilizer issues when the real problem lies...
by Mike Lundgren | Jul 17, 2026 | Diagnostics
When a 2019 Toyota Corolla’s HVAC system stays powered on after the key is removed, the problem isn’t always a faulty control module. In this case, mouse damage created both an open circuit and a short to power in the same wire, causing the AC amplifier to...
by Mike Lundgren | Jun 18, 2026 | Diagnostics
When a 2017 Chevrolet Malibu with a 1.5L turbo engine presents with no power steering, charging system failure, and stalling when put in gear – all without setting any diagnostic codes – the issue is likely a wrong crankshaft position sensor. This specific...
by Mike Lundgren | May 28, 2026 | Diagnostics
The Hidden Cause Behind RAM 5.7L Hemi MisfiresWhen a Dodge RAM 5.7L Hemi presents with a P0306 cylinder 6 misfire code, most technicians expect to find typical causes like spark plugs, coils, or fuel injectors. However, a specific pattern emerges when shops mix MDS...
by Mike Lundgren | May 21, 2026 | Diagnostics
Nissan and Infiniti ignition coils repeatedly melt down due to excessive voltage drop between the negative battery cable and the engine block. This voltage drop, typically 1.5 to 2 volts, creates an elevated ground on the engine block that causes the ECM to hold a...
by Mike Lundgren | May 17, 2026 | Diagnostics
A 2017 BMW X1 with a severe parasitic draw that killed the battery overnight presented a diagnostic challenge that didn’t follow the typical network-based approach. The vehicle exhibited a consistent 4.5 to 6-amp draw with a specific pattern: 20 seconds at 6...
