Air Conditioning Problems Analysis Cases

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

2001 Jeep Cherokee Heater Issues
2001 Jeep Cherokee
The owner of a 2001 Jeep Cherokee reports that the heater only blows cold air despite checking the blend doors, which are functioning correctly. They ...
Jeep Cherokee Heater System
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2000 Acura Integra Throttle Cable Grounding Issue
2000 Acura Integra
The owner of a 2000 Acura Integra reports issues after an engine swap. When turning the key, the RPMs spike to 8, and the throttle cable heats up, pre...
Acura Integra throttle cable
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2002 Subaru WRX A/C Stops Working After Initial Cool
2002 Subaru WRX
The owner of a 2002 Subaru WRX Turbo 4-cylinder reports that after having the A/C system checked and tested, the A/C blows cold air for about 30 secon...
Subaru WRX A/C
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1986 Ford F-150 Rough Idling Diagnosis
1986 Ford F-150
The owner reports that their 1986 Ford F-150 with a 302 V8 engine is experiencing rough idling. Initially, the issue included stalling at stoplights, ...
Ford F-150 Rough Idling
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2001 Pontiac Grand Am Overheating and Fan Issues
2001 Pontiac Grand Am
The owner reports that their 2001 Pontiac Grand Am is overheating, and the engine fans are not operational. They've recently changed the oil and added...
Pontiac Grand Am overheating
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Intermittent Stalling and Power Loss on Acceleration
1997 Chevrolet C/K 1500
The owner reports that their 1997 Chevrolet C/K 1500 experiences intermittent stalling and power loss when accelerating, especially going uphill. On s...
Chevrolet fuel system ignition system
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2003 Honda Civic VTEC Gutless Acceleration Issue
2003 Honda Civic
The owner of a 2003 Honda Civic EX with a VTEC engine is experiencing gutless acceleration, along with the key light, check engine light, and seat bel...
Honda Civic VTEC
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Thermostat Installation Alignment Direction
2001 Nissan Sentra
The owner is replacing the thermostat in their 2001 Nissan Sentra due to a P0128 fault code indicating that the coolant temperature is below the therm...
thermostat Nissan Sentra cooling system
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2008 Pontiac Wave Front Headlight Wiring Issue
2008 Pontiac Wave
The owner reports that the front headlights of their 2008 Pontiac Wave are malfunctioning. The dealership advised that the wiring harness needs replac...
headlight wiring Pontiac Wave high resistance
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Heater Hose Repair for 2000 Ford Windstar 3.8L
2000 Ford Windstar
The owner reported a heater core hose on their 2000 Ford Windstar 3.8L snapped off at the intake manifold. The hose connects to a 'T' behind the engin...
Ford Windstar heating system
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2008 Saturn Astra AC Compressor Diagnosis
2008 Saturn Astra
The AC compressor in my 2008 Saturn Astra failed in June 2013. I bought an AC Delco compressor and receiver/drier from Rock Auto, which my usual mecha...
AC compressor electrical diagnostics refrigerant issues
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1999 Honda Accord Speed Sensor Diagnostic Analysis
1999 Honda Accord
The owner of a 1999 Honda Accord with a F18B SOHC VTEC engine is experiencing speed sensor issues. Symptoms include erratic speedometer readings and p...
Honda Accord speed sensor
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1998 Toyota Corolla Cooling System Diagnosis
1998 Toyota Corolla
The owner reports that their 1998 Toyota Corolla is running hot during low-speed situations. They have already replaced the left side cooling fan moto...
Toyota Corolla Coolant System
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1992 Plymouth Acclaim High Idle Issue Diagnosis
1992 Plymouth Acclaim
The owner reports that their 1992 Plymouth Acclaim idles too fast, behaving as if the gas pedal is pressed even when parked. They mention being able t...
Plymouth Acclaim Idle Speed
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1989 Chrysler New Yorker Auto Temp A/C Issue
1989 Chrysler New Yorker
The owner reports that their 1989 Chrysler New Yorker is stuck in HEAT mode despite selecting the lowest temperature setting (65°F) on the Auto Temp c...
HVAC Auto Temp Control Chrysler New Yorker
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1996 Audi A4 Heater System Bubble Issues
1996 Audi A4
The owner reports that their 1996 Audi A4 has persistent air bubbles in the heating system, which affects heater performance. They have replaced the r...
Audi heating system coolant
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2000 Suzuki Grand Vitara White Smoke Diagnosis
2000 Suzuki Grand Vitara
The owner reports seeing white smoke coming from the tailpipe when starting the vehicle. They haven't performed a tune-up recently and are hopeful for...
Suzuki Grand Vitara white smoke
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Chevy S-10 Knocking After Intake Gasket Replacement
1994-2004 Chevrolet S-10
The owner changed the intake gaskets on their Chevy S-10, but now experiences a loud knocking noise from the engine. They encountered issues with the ...
Chevy S-10 engine knocking
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