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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1999 Lincoln Town Car Firing Order and Cylinder Identification
1999 Lincoln Town Car
The owner is trying to identify the firing order and which cylinder is number 5 on their 1999 Lincoln Town Car. They have recently replaced the spark ...
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1986 Toyota Camry No Fire to Plugs Diagnosis
1986 Toyota Camry
The owner reports that their 1986 Toyota Camry lost power while driving, began bucking, and then died without restarting. Previous checks included rel...
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1977 Jeep CJ7 Turn Signals Not Functioning
1977 Jeep CJ7
The owner reports that the turn signals on their 1977 Jeep CJ7 are completely non-functional. While the tail lights and parking lights work fine, the ...
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1996 Buick Park Avenue Oil and Coolant Leak Diagnosis
1996 Buick Park Avenue
The owner reports that the 1996 Buick Park Avenue has engine oil mixing with coolant, and coolant is leaking from the upper intake manifold only when ...
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Ignition Key Won't Turn Due to Steering Lock
2001 Saturn L100
The owner of a 2001 Saturn L100 experienced a situation at the gas pump where the ignition key would not turn. The steering wheel was locked with limi...
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1992 Buick Century Limited Stalling and Restarting Issues
1992 Buick Century
The owner reports that the 1992 Buick Century Limited starts fine but experiences jerking during driving, followed by the temperature light turning on...
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1994 Ford Taurus Oil Pressure Light Diagnosis
1994 Ford Taurus
The owner of a 1994 Ford Taurus is experiencing an oil pressure warning light illuminated on the dashboard. Despite the light being on, the engine is ...
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2003 Dodge Intrepid Timing Issue Diagnosis
2003 Dodge Intrepid
The owner recently replaced the water pump and timing chain on their 2003 Dodge Intrepid with a 2.7L engine. After the repair, the vehicle starts but ...
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1996 Ford Contour Rough Idle and Starting Issues
1996 Ford Contour
The owner reports that their 1996 Ford Contour runs very rough and requires some gas to start. Once started, the engine shakes violently at idle and p...
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1999 Dodge Caravan High Idle Speed on Start Up
1999 Dodge Caravan
The owner reports that after changing the spark plugs on their 1999 Dodge Grand Caravan with a 3.3L engine, they are experiencing a high idle speed, r...
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1996 Honda Accord Blinking Check Engine Light
1996 Honda Accord
The check engine light on my 1996 Honda Accord started blinking, particularly when driving under 70 mph or below 3,000 rpm. After having the code read...
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Loud Grinding Noise from Saturn SL2 Timing Cover
1999 Saturn SL2
The owner reports a very loud vibrating and grinding sound from the Saturn SL2, suggesting a possible issue with the power steering pump. However, the...
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2002 Saturn SL1 Check Engine Light Diagnostics
2002 Saturn SL1
The owner of a 2002 Saturn SL1 reports that after changing the spark plugs and wires, the check engine light stayed off for three weeks. However, afte...
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Vacuum Hose Connection Issues on 95 Mitsubishi Eclipse
1995-1999 Mitsubishi Eclipse
The owner of a 1995 Mitsubishi Eclipse RS non-turbo is experiencing issues with a vacuum line that they cannot locate. They have identified a 3-outlet...
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1999 Dodge Stratus Won't Start After Repairs
1999 Dodge Stratus
The owner reports that their 1999 Dodge Stratus died while driving and has not started since. They previously replaced the computer, fuel filter, and ...
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1999 Mitsubishi Eclipse Sputters On Acceleration
1999 Mitsubishi Eclipse
The owner reports that their 1999 Mitsubishi Eclipse with a 2.0L non-turbo engine sputters during acceleration. This issue occurs primarily when the e...
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1993 Dodge Caravan No Start Diagnosis
1993 Dodge Caravan
The owner reports that their 1993 Dodge Caravan lost all ignition power while driving, leading to a complete failure to start. Currently, the gauges a...
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1999 Toyota Corolla Airbox Noise Diagnosis
1999 Toyota Corolla
The owner of a 1999 Toyota Corolla with a 1.8L engine and 109,000 miles reports a sucking noise from the airbox at low idle. The noise is traced to a ...
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