Fuel System Fault Analysis Cases
Comprehensive fuel system diagnostics including fuel pump failures, delivery issues, fuel economy problems, and injection system faults.
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4.3 TBI Running Rough and Too Rich
1992-1992 GMC S15 Blazer
The owner reports that their 1992 GMC S15 4.3 TBI Blazer has started running rough and very rich, with no power and poor acceleration. The vehicle was...
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1990 Geo Storm Power Loss Diagnosis
1990 Geo Storm
The owner of a 1990 Geo Storm reports a loss of power while driving. The vehicle has been experiencing performance issues, particularly noticeable dur...
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Fuel Injector Power Supply Issue on 1994 Dodge Ram 1500
1994 Dodge Ram 1500
The owner reports that their 1994 Dodge Ram 1500 with a 5.9L V8 engine has no power to the fuel injectors when the ignition switch is turned on. They ...
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Noise After Fuel Filter Replacement
1993 Honda Civic DX
The owner replaced the fuel filter on their 1993 Honda Civic DX as per the maintenance schedule. After the replacement, they've noticed a persistent n...
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1992 Nissan Primera Wagon 2.0 Won't Start
1992 Nissan Primera Wagon
The owner of a 1992 Nissan Primera Wagon 2.0 SLX is experiencing a no-start condition. Initially, the vehicle had fuel consumption issues which were r...
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2000 Ford Mustang P0190 Trouble Code Diagnosis
2000 Ford Mustang
The owner scanned their 2000 Ford Mustang and found P0190 trouble code due to a non-operational fuel pump. They reported no fuel pressure and heard a ...
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1999 Mazda Truck Won't Run - Electrical Issue
1999 Mazda Truck
The owner reports that while picking up a TV, the 1999 Mazda Truck suddenly died and wouldn't start despite cranking. After towing it home, the owner ...
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Honda CRX Stuttering Under Light Stress Diagnosis
1989 Honda CRX
The owner of a 1989 Honda CRX HF with 197,700 miles reports a stuttering issue that has progressively worsened over the past half month. This problem ...
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1995 Dodge Intrepid Fuel Pump Diagnosis
1995 Dodge Intrepid
The owner reported that after parking the car overnight, the fuel gauge showed empty. After adding 3 gallons of gas, it still showed no fuel. Upon ins...
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2001 Volkswagen Jetta Fuel Delivery Issue
2001 Volkswagen Jetta
The owner of a 2001 Volkswagen Jetta has reported that the vehicle is not delivering fuel to the injectors, despite having replaced the fuel pump, fue...
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1997 Jeep Grand Cherokee Laredo PCM Diagnostic
1997 Jeep Grand Cherokee Laredo
The owner reports issues with their 1997 Jeep Grand Cherokee Laredo, equipped with a 4.0L engine and automatic transmission. The vehicle has been well...
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Fuel Pump Whistle Noise Diagnosis for 1999 Dodge Caravan
1999 Dodge Caravan
The owner reports a loud whistling noise from the fuel pump at idle, which sounds like 'EEEEEEEE'. They have already replaced the fuel pump and filter...
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1995 Chrysler New Yorker Gas Smell Diagnosis
1995 Chrysler New Yorker
The owner reports a gasoline smell coming from the air and heating ducts when starting the vehicle in the morning. This smell lasts about 10 to 15 min...
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99 Saturn SL2 A/C Compressor Short Cycling Issue
1999 Saturn SL2
The owner reports that the air conditioning compressor in their 1999 Saturn SL2 is short cycling at idle, with very high pressures in both the suction...
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1997 Toyota Avalon ECU Diagnosis and Repair Analysis
1997 Toyota Avalon
The owner reported that their 1997 Toyota Avalon suddenly died while driving at 50 mph with no warning signs. After towing it to the dealership, they ...
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2000 Ford Explorer Fuel Pump Failure Analysis
2000 Ford Explorer
The owner of a 2000 Ford Explorer reports persistent fuel pump failures, having replaced four pumps within a week. After the first replacement, the ve...
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Fuel Backing Up When Filling Tank
1987 Nissan Pulsar NX SE
The owner of a 1987 Nissan Pulsar NX SE with 110,000 miles reports that whenever they attempt to fill the fuel tank, the fuel backs up and spills out,...
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1999 Oldsmobile Alero P1632 Anti-Theft Fuel Disabled
1999 Oldsmobile Alero
The vehicle owner attempted to clear a mouse nest from the blower cage, which required removing the BCM from under the dashboard. During the process, ...
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