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A/C Blowing Hot Air

Old 07-08-10, 05:05 PM
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good deal...thanks sakataj! I guess I'm off to find a drier and expansion valve...I can't imagine these will be more than the ac compressor itself...
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Old 08-20-13, 06:54 AM
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Hey here's an idea..... Does anyone think we can bypass the temp servos so that that A/C always blows cold. I ask because the servos only move arms so if those arms were in a fixed position out of the motor in tern wont the ac always be at one temp weather cold or hot? I ask because my is HOT AS F*%K, and I hate it. I live in the Bahamas and its always hot so I have no need for the heater at all. If it can be done someone let me know the fixed position of the arms please im not sure how they flow exactly because I have never seen mine work.
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Old 08-20-13, 03:06 PM
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no one has feedback for me on this man....
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Old 09-18-13, 01:24 AM
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98 GS400 A/C stopped cooling.

This is what I observe:

With AC swtich on and thermostat at low setting, the engine goes to fast idle. I can see the AC clutch engage and the pressure plate starts spinning. No weird sound at all ... except the engine rpm is higher as the engine does not see the compressor load.

Strange to me was that with engine turned off, I can spin the pressure plate with very little resistance by finger tips. I expected the pressure plate to be rigidly connected to the center shaft of the compressor through the center bolt. To me it does not seem normal.



Last edited by salimshah; 09-18-13 at 01:28 AM.
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Old 09-26-14, 08:38 AM
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Default AC blowing warm air.

Originally Posted by sakataj View Post
ok so then the heat side works on BOTH sides (my heat when my servos were bad only worked on one side)

run through all modes while sitting in the passenger seat and see if all modes function correctly and then do this also for the a/c see if it on passenger side it works. this will help narrow down a servo and a actual a/c problem.

have you actually had your a/c serviced or checked?
Hi, I'm new on this forum, after I read this forum, I have similar problem. My '99 GS 300 AC all sudden the next day blowing warm air. Check the manual, the AC button solid green, not flickering, check the clutch is engaged.. I bought AC Pro recharge kit, come with gauge. Before I recharge it I plug in the gauge to the low pressure first, the needle shoot up to red zone, I try this several time, but is always in the red zone, so I don't recharge the unit, since I have no experience with AC, I'm afraid to overfilled. I checked all the button mode all working fine, before this the AC always blowing very cold air fast, the manual says if the AC button flickring, that means problem with compressor. But mine is solid green no flickering. Any thought and advice to solve this problem I really appreciate it. Thank you.
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