1998 Chevrolet Lumina A/C Won't Cycle Off

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TROOPER1159
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Have a 98 Chevrolet Lumina 3.1L with 75,000 miles. Noticed the A/C compressor does not cycle off as usual. When A/C is turned on, it starts and cools as normal, but the compressor stays on and does not cycle on and off as usual. Is this a symptom of too much freon or too little?
Mar 20, 2006 at 9:53 AM
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PEPPERMRJ
  • ✓Experienced Mechanic
  • 1,158 POSTS
Low freon would not allow the compressor to come on. My guess would be a sticking relay.

Good luck and let us know. :)
Mar 20, 2006 at 10:12 AM
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Suggested Repair

Check the A/C compressor clutch relay for sticking. Low refrigerant is unlikely because the compressor still engages and cools.

Conversation Summary

A 1998 Chevrolet Lumina 3.1L owner reports the A/C compressor turns on and cools normally but does not cycle off, and asks whether that means too much or too little refrigerant. The expert said low refrigerant would keep the compressor from coming on and guessed a sticking relay.

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