Air Conditioning Problems Analysis Cases

Analysis of AC system failures, cooling problems, and HVAC performance issues.

1987 Honda Accord White Smoke from Exhaust Issue
1987 Honda Accord
The owner reports that their 1987 Honda Accord starts emitting white smoke from the exhaust after 2-3 minutes of idling. They collected what appears t...
Honda Accord white smoke
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Coolant Contamination in Oil - 2001 Chrysler Concorde
2001 Chrysler Concorde
The owner reports that while driving, the power steering failed, the brakes became hard, and smoke began to emerge from the engine. Upon inspection, m...
Chrysler Concorde coolant contamination
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2001 Daewoo Nubira Head Valve Replacement Procedure
2001 Daewoo Nubira
The owner has already removed the cylinder head from the 2001 Daewoo Nubira and possesses a valve spring compressor. However, they are struggling to a...
valve_replacement Daewoo_Nubira engine_repair
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Hesitation during acceleration on 65 Chevy Impala
1965 Chevrolet Impala
The owner has a 1965 Chevy Impala with a 283 engine and a Rochester 2G carburetor. After a recent carb rebuild, the vehicle runs perfectly at idle and...
Chevrolet Impala 283
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1997 Honda Accord LX Unexpectedly Dies
1997 Honda Accord LX
The owner reports that their 1997 Honda Accord LX is experiencing unexpected stalling while driving. This issue occurs intermittently, with no clear p...
Honda Accord PGM-FI
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1995 Lincoln Town Car Fan Speed Diagnostic
1995 Lincoln Town Car
The owner reports that the fan speed in their 1995 Lincoln Town Car only operates at high speed, regardless of the automatic temperature control or ma...
Lincoln Town Car fan speed
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Air Only Blows Out of Defrost Vents
2000 Ford Excursion
The owner of a 2000 Ford Excursion with 38,000 miles reports that after parking the vehicle for winter, the air only blows out of the defrost vents in...
HVAC vacuum system actuator failure
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Toyota Sienna P0116 Code Diagnosis and Repair
2000 Toyota Sienna
The owner reports a P0116 code for their 2000 Toyota Sienna at 119,000 miles. The code indicates a coolant temperature sensor circuit range/performanc...
Toyota Sienna P0116
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Vibration at 45-60 MPH During Acceleration
2003 Dodge Neon SXT
The vehicle owner reports a nasty vibration that occurs when accelerating between 45 and 60 MPH. The vibration seems to come from the front of the car...
vibration drive axle wheel bearing
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2004 Mitsubishi Endeavor Acceleration Issues
2004 Mitsubishi Endeavor
The owner reports that their 2004 Mitsubishi Endeavor will only accelerate to 10 mph. They have already replaced the throttle body and accelerator ped...
Mitsubishi Endeavor acceleration issues
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EGR Valve Identification for 1999 Pontiac Grand Am SE
1999 Pontiac Grand Am SE
The vehicle owner has recently replaced two broken valves on their 1999 Pontiac Grand Am SE with a 2.4L engine. After reassembling the engine, they di...
EGR Valve Intake Manifold Vacuum Port
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1985 Chevrolet Vacuum System Diagnosis
1985 Chevrolet Other Models
The owner is experiencing engine performance issues with their 1985 Chevrolet truck equipped with a 5.7L 350 V8 engine. The vehicle starts but runs po...
vacuum_system EGR PCV
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1998 Buick Century Low Air Flow from Vents
1998 Buick Century
The owner of a 1998 Buick Century with climate control reports low air flow from the vents regardless of the setting (windshield, floor, mid). While t...
HVAC cabin air filter blower motor
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1997 Mazda 626 Acceleration Issue Diagnosis
1997 Mazda 626
The owner reported a significant decrease in power during a road trip after three hours of driving. The engine was at normal temperature with no other...
Mazda 626 acceleration
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2004 Cadillac Escalade EXT A/C Blend Door Issue
2004 Cadillac Escalade EXT
The owner of a 2004 Cadillac Escalade EXT reports an issue with the air conditioning system. While driving with the A/C on, heat unexpectedly starts b...
Cadillac Escalade EXT A/C system
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2003 Saturn Vue Stalling Issues After Accident
2003 Saturn Vue
The owner experienced intermittent stalling after an accident that required a battery recharge. The garage reset the computer but found no issues. The...
Saturn Vue Stalling
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1995 Dodge Intrepid Steering Rack Failure Diagnosis
1995 Dodge Intrepid
The owner of a 1995 Dodge Intrepid reports a steering problem where the steering wheel can be turned significantly without any corresponding movement ...
Dodge Intrepid steering
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1998 Honda Accord No Power with Engine Miss
1998 Honda Accord
The owner describes a 1998 Honda Accord with a 4-cylinder engine that has been running poorly, often unable to drive. They previously replaced the Idl...
Honda Accord P0141
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