THE PREMIER MOTORING LIBRARY
Warning lights, maintenance and everyday ownership. Find a useful starting point for your next conversation with a workshop.
P0455 on a Mazda 3 means the vehicle’s computer has detected a large or gross leak in the evaporative-emissions (EVAP) system. The system captures fuel vapours and routes them towards the engine to be burned rather than allowing them to escape into the atmosphere. The code identifies a leak condition; it does not prove that… Read More: Mazda 3 P0455 Code: Meaning, Causes, and Whether You Can… »
There is no responsible one-size-fits-all fix for a cylinder reported to have no compression. The repair depends on confirming the reading, identifying the fault on that particular engine, and matching the repair to the confirmed cause. The research available for this article does not verify a compression-test procedure, diagnostic limits, or a repair method, so… Read More: How to Fix a Cylinder With No Compression »
If your car battery keeps going flat and the alternator has been checked, the cause could still be an electrical draw while the car is parked, a light or accessory that stays on, a faulty switch or relay, damaged wiring, or a battery that cannot hold charge. A charging-system fault may also have been missed:… Read More: Car Battery Draining? Causes, Tests and Fixes Beyond the Alternator »
If your engine is shaking, the information available for this article is insufficient to identify the cause or determine whether the car is safe to drive. Treat the shaking as a symptom, not a diagnosis: the pattern alone does not confirm a failed part. In particular, there is no evidence here to support a specific… Read More: What to Do If Your Engine Is Shaking: Causes and… »
Common possible causes of a 2015 Hyundai Elantra overheating include low coolant from a leak, a radiator fan or airflow problem, a thermostat that does not open properly, a radiator issue, or a water-pump or other coolant-circulation problem. These are general cooling-system possibilities, not proof of a defect affecting every 2015 Elantra, and the available… Read More: 2015 Hyundai Elantra Overheating: Common Causes and What to Check »
A faulty or sticking EGR valve can cause a Mercedes to idle roughly, lose power, hesitate or stall. Knocking sounds and a change in fuel economy may also occur. These symptoms can point to an EGR problem, but they do not confirm that the valve has failed: other engine-management or airflow faults can feel similar,… Read More: Mercedes EGR Valve Symptoms: Warning Signs, Causes and What to… »
A cylinder 6 misfire on a 2014 Chrysler Town & Country can result from an ignition fault, such as a worn spark plug or faulty ignition coil, but an injector or fuel-delivery problem, a vacuum leak, or a compression or other mechanical issue is also possible. If a scan tool reports P0306, it means the… Read More: Cylinder 6 Misfire on a 2014 Chrysler Town & Country:… »
A car that overheats while idling may have a cooling-system problem that becomes more apparent when there is little airflow through the radiator. The radiator fan helps draw air through it when the vehicle is stopped or moving slowly; when the car is moving, airflow can help cool the radiator. This pattern can point towards… Read More: Why Your Car Overheats at Idle: Causes and What to… »
A squeal you hear while the car is moving that stops when you press the brake pedal is a useful clue, not a diagnosis. Brake-pad vibration or contact can produce a high-pitched noise, and applying the brakes changes the pressure and contact at the wheel, which may alter or suppress it. Dust or debris, moisture… Read More: Why Does a Car Squeal Stop When You Brake? Causes… »
On a Chrysler Town & Country, P1128 is described as “Closed loop fueling not achieved”. One source addressing a 2009 Town & Country uses that definition, while other references use the fuller wording “Closed Loop Fuel Not Achieved Bank 1”. It means the powertrain control module (PCM) has not reached, or cannot rely on, the… Read More: Chrysler Town & Country P1128 Code: Meaning and Whether You… »