2000 Infiniti I30 constant A/C

OREGON8116

MEMBER
2000 INFINITI I30
6 CYL
FWD
AUTOMATIC
101,000 MILES

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?

5 Replies

DOCFIXIT

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.
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Friday, September 3rd, 2010 AT 11:45 AM

OREGON8116

MEMBER
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.

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Tuesday, September 7th, 2010 AT 1:15 PM

DOCFIXIT

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

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Tuesday, September 7th, 2010 AT 2:14 PM

OREGON8116

MEMBER
3 POSTS

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

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Friday, September 10th, 2010 AT 1:25 PM

DOCFIXIT

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?