Why 180-Degree Thermostats Trigger Check Engine Lights (And Why They’re Bad)
Installing a 180-degree thermostat causes P0128 check engine codes in cold weather and damages your engine. Learn why it doesn’t work for street driving.
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Check Engine and Hill Assist Lights on 2014 Crosstrek: Diagnosis and DIY Fixes
Your gear shift problem may have triggered sensor faults. Learn how to diagnose the issue with an OBD-II scanner and what to try before visiting the dealer.
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Fault 311 and Rough Idle: Why Your Speedo Chip Matters to Engine Control
Fault 311 signals a missing speed input to your ECU. When the speedo chip fails, the engine enters limp mode—here’s how to diagnose and fix it.
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How to Fix P2261 Code: Lubricating Your Wastegate Actuator vs. Replacement
P2261 code troubling you? Learn how to lubricate a stuck wastegate actuator and decide whether DIY lubrication or ATP replacement is the right fix for your turbo.
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Diagnosing Check Engine Codes and Idle Stalling on the 22RE Engine
The clicking sound and idle dying on your 1989 22RE pickup likely points to a failing circuit opening relay or low-airflow condition triggering fuel pump cutoff. Codes 25 and 51 suggest a lean condition that needs investigation.
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Rough Idle and Check Engine Light: Diagnosing the Real Culprit Beyond the Speedo
A faulty speed sensor can cause rough idle and check engine lights, but it’s rarely the first suspect. Here’s how to pinpoint what’s actually wrong with your car.