Electrical System Fault Analysis Cases
Complete database of electrical system problems including battery issues, charging system failures, lighting problems, and sensor diagnostics.
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1997 GMC Steering Sensor Issue During Left Turn
1997 GMC Unknown
The owner reports that the GMC vehicle exhibits free spinning of the steering wheel when turning left. This issue seems to occur primarily at low spee...
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2001 Cadillac Deville Fog Lamp Installation Guidance
2001 Cadillac Deville
The owner of a 2001 Cadillac Deville DHS reports having pre-installed fog lamps with bulbs and wiring visible through the bumper. They confirmed a fog...
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2007 Chevy Trailblazer Interior Electrical Issue
2007 Chevrolet Trailblazer
The owner reports intermittent electrical issues with their 2007 Chevy Trailblazer. Specifically, the interior lights flicker and sometimes turn off c...
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O2 Sensor Location and Diagnostic Code Analysis
1995 Volvo 960
The owner of a 1995 Volvo 960 is seeking the exact location of the O2 sensor and is inquiring if there is a diagram available. They have obtained a di...
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Brake Lights Activate Intermittently on 1998 Infiniti I30
1998 Infiniti I30
The owner reports that the brake lights on their 1998 Infiniti I30 turn on by themselves intermittently, particularly when the vehicle is stationary. ...
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Cruise Control Inoperative on 1992 Cadillac Deville
1992 Cadillac Deville
The owner of a 1992 Cadillac Deville reports that the cruise control system is not functioning despite successful tests on the switch and related comp...
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1999 GMC Sonoma Fuel Gauge Level Misreading
1999 GMC Sonoma
The owner reports that after replacing the fuel pump and sending unit, the fuel gauge still reads incorrectly. Initially, when the ignition is turned ...
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1996 Chrysler Cirrus Electrical Issue Diagnosis
1996 Chrysler Cirrus
The owner of a 1996 Chrysler Cirrus reports that the 20 amp fuse for the ignition and fuel starter keeps blowing. They received the car in March and h...
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Diagnosing Chime Noise from Under Dash
2002 Mazda B3000
The owner reports a chime noise originating from under the dashboard of their 2002 Mazda B3000. This chime is distinct from the standard sounds associ...
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2008 Ford F350 Fuse Panel Issue with VPWR
2008 Ford F350
The owner of a 2008 Ford F350 reports that a 20-amp fuse under the hood blows immediately when the ignition is turned on. They are unsure where to sta...
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Trouble Code 14 Diagnosis for 1996 Dodge Intrepid
1996 Dodge Intrepid
The owner of a 1996 Dodge Intrepid with a 3.5L V6 engine reports that they retrieved trouble code 14 using the key method. They are concerned this iss...
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1997 Chevrolet Silverado Tail Lights Not Working
1997 Chevrolet Silverado
The owner reports that the tail lights of their 1997 Chevrolet Silverado are not functioning when the truck is on, although the brake and reverse ligh...
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Electrical Harness Repair for 1995 Pontiac Firebird
1995 Pontiac Firebird
The owner of a 1995 Pontiac Firebird with a 3.4L engine reported that the vehicle was parked due to a flat tire, and mice chewed through the wires in ...
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Driver's Side Fog Lamp Not Receiving Voltage
1988 Mercedes 300CE
The vehicle owner reports that the driver's side fog lamp is not receiving voltage, despite the bulb being functional and the passenger side fog lamp ...
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1988 Chevy Celebrity AC Electrical Diagnosis
1988 Chevrolet Celebrity
The AC system on a 1988 Chevy Celebrity has stopped functioning after being converted to R-134 and recharged. The owner noted that the compressor will...
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Orange Warning Light Diagnosis on 2007 Ford Fiesta
2007 Ford Fiesta
The owner of a 2007 Ford Fiesta reports seeing an orange warning light featuring an exclamation mark on the dashboard. They have run diagnostics multi...
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O2 Sensor Issue on 2000 Chevy S-10 with 4.3L Engine
2000 Chevrolet S-10
The owner of a 2000 Chevrolet S-10 with a 4.3L engine reports that the check engine light is illuminated. A code reader indicated a fault with the O2 ...
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Failed Smog Inspection: EGR and O2 Sensors Not Ready
1997 Ford Taurus
The owner has a 1997 Ford Taurus with a 3.0L engine and 151,000 miles. After a recent smog inspection, the vehicle passed all tests except the functio...
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