2000 Infiniti I30 constant A/C

2000 INFINITI I30
101,000 MILES • 6 CYL • FWD • AUTOMATIC
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OREGON8116
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  • 3 POSTS
Recently, my climate control system only produces air conditioning. Example: outside temp is 55, I set the thermostat on the dash (AUTO setting) at 75. After a half hour of driving, still getting air conditioning. Set to the ECON setting, I get ambient temperature. If I crank it up to 82 on AUTO, I'll get warm air for a few moments, then back to A/C. Called the local dealer, he said it sounds like $750 plus to fix it. Any suggestions on what it might be and possible lower cost solutions?
Sep 2, 2010 at 4:58 AM
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DOCFIXIT
  • ✓Experienced Mechanic
  • 18,828 POSTS
Hi
Run the self diagostnic tests key on press hold AC off button for at least 5 sec.See on screen go into self-diagnostic test 1. there are 5 tests move between tests by rotating TEMP knob. Record any findings and post will advise.
Thanks for donate
Sep 3, 2010 at 4:45 AM
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OREGON8116
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  • 3 POSTS
Tried and didn't work. Let me see if I get it right. Question: First, should ignition be on or engine idling when doing the diagnostic? Second - push "OFF" button for 5 or more seconds - then screen should come alive with tests? Let me know if this is correct and I'll try again and send responses. Thanks for your help.
Sep 7, 2010 at 6:15 AM
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DOCFIXIT
  • ✓Experienced Mechanic
  • 18,828 POSTS
Key on or car running either way and yes hold AC off screen will go to test. Rotate TEMP knob to go from 1-5 tests
Sep 7, 2010 at 7:14 AM
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OREGON8116
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I ran the test as you suggested. Here are results.

Hold off button down until screen shows a message

Message: AUTOECON -188.8 C AMB

Turned temp dial to 2

Message: number 2 shows, there is some whirring noise, then the number 5 shows next to 2

Turned temp dial to 3

Message: the number 3 shows, there is whirring sound, after about 45 seconds the number O shows next to 3.

Turned temp dial to 4
Message: the number 41 shows along with a blowing sound

Turned dial to 5

message: the number 51 with no sound
Sep 10, 2010 at 6:25 AM
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DOCFIXIT
  • ✓Experienced Mechanic
  • 18,828 POSTS
Suspect A/C Auto Amplifier if compressor and fan on all the time they are controler by amplifer. Test 2 and 3 gave incorrect results while 4 - 5 where good. Dealer part and lots of $$$ maybe get one for salvage?
Sep 14, 2010 at 8:28 AM
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