Engine System Fault Analysis Cases
Comprehensive collection of engine system fault analysis cases. Get detailed diagnostic solutions for starting issues, performance problems, ignition system faults, and cooling system failures.
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1991 Pontiac Firebird Stalling and Poor Performance
1991 Pontiac Firebird
The owner reports that while driving, the Pontiac Firebird suddenly dropped to 1000 RPM and wouldn't gain speed, ultimately stalling. The engine somet...
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1991 Ford Probe Rough Idle and Acceleration Issues
1991 Ford Probe
The owner reports that the 1991 Ford Probe idles roughly and can stall when in gear at a stop, but runs fine in park or neutral. When accelerating slo...
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1994 Chevy S-10 P/U Intermittent Stalling Issues
1994 Chevrolet S-10
The owner of a 1994 Chevy S-10 P/U with a 4.3L Vortec engine (115,000 miles) reports intermittent stalling while driving. Sometimes, the vehicle resta...
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Honda Civic Slow Start on Cool Mornings
1994 Honda Civic
The owner of a 1994 Honda Civic reports that the vehicle has been experiencing slow starts on cool mornings, taking approximately 4-5 seconds of stutt...
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1993 Audi Quattro Intermittent Stalling Diagnosis
1993 Audi Quattro
The owner reports that the 1993 Audi Quattro runs smoothly for about 5 minutes before dying, unable to restart for 2-3 hours. They have no repair hist...
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2001 Volvo S40 Idle Drops and Misfire Issue
2001 Volvo S40
The owner reports that the idle of their 2001 Volvo S40 drops completely to a shut-off when coming to a stop, despite cleaning the throttle position s...
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1992 Suzuki Engine Won't Start - Control Box Issues
1992 Suzuki Other Models
The owner's 1992 Suzuki cannot start, with symptoms starting and running initially but failing to restart after stopping. Over two months, various tec...
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1998 Chevrolet K1500 Truck Won't Start Intermittently
1998 Chevrolet K1500
The owner describes intermittent starting issues with their 1998 Chevrolet K1500 pickup equipped with a 5.7L engine. Initially, the truck would occasi...
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1992 Lexus SC 400 Cruise Control and Speedometer Failure
1992 Lexus SC 400
The owner reports that while driving at highway speeds, the cruise control and speedometer have both failed simultaneously. The tachometer continues t...
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1989 Ford Ranger Stalling Issues When Engaging Gear
1989 Ford Ranger
The owner reports that the truck starts fine but stalls immediately when put into gear and gas is pressed. They have replaced the computer system, spa...
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1985 GMC Sierra - Spring Sounding Like Ping
1985 GMC Sierra
The owner reports a persistent 'spring-like pinging' noise originating from the driver's side near the firewall at the feet area, particularly noticea...
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Power Steering Pump Removal for 1999 Chevy Suburban
1999 Chevrolet Suburban
The vehicle owner is seeking guidance on how to remove the power steering pump from their 1999 Chevy Suburban with a 5.7L V8 engine. They have already...
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1986 Ford F-100 Starting Issue with Continuous Cranking
1986 Ford F-100
The owner reports that when attempting to start the 1986 Ford F-100, the engine continues to crank even after removing the key from the ignition. The ...
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1985 Chevy Blazer Flexplate Cracking Issue
1985 Chevrolet Blazer
The owner reports that after getting the 1985 Chevy Blazer running again, it has gone through two flexplates, both exhibiting fractures radiating from...
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1996 Subaru Outback Idle Problem Diagnosis
1996 Subaru Outback
After a 300-mile trip, the owner's 1996 Subaru Outback won't start the next morning. Despite replacing the fuel filters and pump and adding 'heat' to ...
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Loud Ticking and Whining Sounds in 2000 Saturn LW2
2000 Saturn LW2
The owner describes a 2000 Saturn LW2 Wagon making a loud ticking sound under the hood, likened to 'bolts in a blender.' Additionally, there's a burni...
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Power Steering Difficulty in Cold Weather
2002 Nissan Sentra
The owner of a 2002 Nissan Sentra reports that the power steering feels heavy, especially in cold weather. The issue improves as the car warms up. The...
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1997 Hyundai Accent Transmission High RPM Issue
1997 Hyundai Accent
The owner reports ongoing transmission issues with their 1997 Hyundai Accent for approximately six months. The vehicle remains drivable, but it experi...
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