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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1990 Ford Crown Victoria Trouble Codes 42 & 92 Analysis
1990 Ford Crown Victoria
The owner installed a 1990 Ford 5.0L 302 EFI engine in a 1941 Ford with a C-4 automatic transmission. After rebuilding the engine and replacing all se...
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1994 Jeep Cherokee Cooling System Failure Analysis
1994 Jeep Cherokee
The owner of a 1994 Jeep Cherokee with an inline 6 reported that while accelerating to pass another vehicle, they heard a pop and saw white smoke in t...
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1992 Subaru Loyale Fuel Pump System Diagnosis
1992 Subaru Loyale
The owner reports that after replacing the fuel pump and relay, the fuel system on their 1992 Subaru Loyale wagon still does not operate. They suspect...
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1992 Chevy Suburban Hissing Noise After Shutdown
1992 Chevrolet Suburban
The owner reports a persistent hissing noise coming from under the truck after turning off the engine. This noise continues even when the truck is tur...
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1991 Suzuki Mehran Jerking Issue During Gear Changes
1991 Suzuki Mehran
The owner reports that their 1991 Suzuki Mehran experiences jerking when changing gears, especially during acceleration from low to high speed and vic...
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1991 Pontiac Firebird Fuel Pump Stays On
1991 Pontiac Firebird
The owner reports that the fuel pump in their 1991 Pontiac Firebird continues to run even when the ignition key is removed. They have already checked ...
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1994 Chevy Suburban Fuel Relay Not Activating
1994 Chevrolet Suburban
The owner reports that their 1994 Chevy Suburban is not priming the fuel pump through the relay. They have already replaced the fuel relay and its plu...
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Fuel Pump Not Getting Power After Replacement
unknown Ford unknown
The vehicle was taken to a Ford garage where the fuel pump was diagnosed as faulty and subsequently replaced. However, the car still won't start. To t...
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2002 GMC Sierra Fuel Pump Problem Diagnosis
2002 GMC Sierra
The owner's son’s 2002 GMC Sierra experienced starting issues, prompting the replacement of the fuel pump. Prior to this, the owner checked the fuel p...
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2002 Oldsmobile Bravada Fuel Pump Diagnostic
2002 Oldsmobile Bravada
The owner reports that the vehicle cranks and starts with starting spray, but the fuel pump isn't receiving power. A new fuel pump was installed, yet ...
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1989 Ford Bronco Won't Fire - Electrical Diagnosis
1989 Ford Bronco
The owner reports that their 1989 Ford Bronco won't start. The engine cranks but does not fire. Previous attempts to diagnose the issue included check...
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Chevy Venture Fuel Pump Replacement Guide
2001 Chevrolet Venture
The owner reports that their 2001 Chevy Venture has quit running and seems to not be getting fuel. The vehicle starts briefly with starting fluid but ...
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2004 Chrysler Sebring Oil Light and Fuel Delivery Issues
2004 Chrysler Sebring
The owner reports that the oil light comes on suddenly while driving, and shortly after, there is a loss of pressure on the gas pedal, resulting in no...
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2003 SAAB 9-3 Intermittent Stalling Issue
2003 SAAB 9-3
The owner reports that their 2003 SAAB 9-3 has unexpectedly shut off three times while driving in the past month, specifically when approaching a red ...
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1998 Chevy Blazer Stalling and Sputtering Issues
1998 Chevy Blazer
The owner of a 1998 Chevy Blazer reports experiencing intermittent stalling while driving and during warm-up periods. The vehicle does not completely ...
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1982 Cadillac Deville Won't Start - Fuel Delivery Issue
1982 Cadillac Deville
The owner describes a 1982 Cadillac Deville with a 4.1L V8 engine that cranks but won't start without starter fluid sprayed into the throttle body. Th...
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1999 GMC Sierra Low Idle and Rich Running Diagnosis
1999 GMC Sierra
The owner reports that their 1999 GMC Sierra is experiencing low idle, running rich, and is unresponsive when revving. The issue has escalated to a po...
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1995 Oldsmobile Ciera Fuel Pump Power Issue
1995 Oldsmobile Ciera
The owner reports that the fuel pump is not receiving power. After checking the wiring to the pump and the fuse, the owner confirmed that power is pre...
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