Car Air Conditioning Problem Diagnosis & Repair Help
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Car Air Conditioning Problem Diagnosis & Repair Help

typical air conditioning circuit, refrigeration circuit

Air Conditioning Problem Diagnosis & Repair Articles:

Air Conditioning Inspection Checklist

A/C Cooling Problem: Blows Warm Air Only No Cool Air

Troubleshooting Air Conditioning Problems

Troubleshoot Automatic Climate Control

Troubleshooting A/C Cooling Problems with Temperature

Cooling Fan (electric)

Cooling Fan Relay Problems

How To Recharge Your Car's Air Conditioner

Refrigerant Contamination

Flammable Refrigerants

Alternative Refrigerants for R-12

Future Alternative Refrigerants That May Replace R-134a


California proposes ban on R134a sales to motorists

Information about Retrofitting older vehicles with R-12 A/C systems to R-134a

Air Conditioning Service Best Practices (Procedures a repair shop should follow when servicing your A/C system)

MACS Recommended A/C Service Procedures (PDF file - requires Adobe Acrobat Reader to view).

A/C Compressor Failures

A/C Condenser Flushing

Compressor PAG Oil Application Chart

Additional Offsite Technical Resources:

4Seasons A/C Technical Bulletins

Air Conditioning Related Products:

Do you drive an older vehicle with an R-12 A/C system?
Want to convert it to R-134a?

R134a Retrofit Guide

Click to see full-size menu screen

A Quick Reference Guide to Converting R12 A/C Systems to R134a Refrigerant.
Software runs on any Windows PC.
Available as a download or on CD.

For product and ordering information, Click Here

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AA1Car Diagnostic Help

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