A/C problem

Premo34WV · 07-12-2011, 08:15 AM

So Im driving yesterday in 95 degree weather and my a/c starts going in and out. It seemed like when I accelerated it would lose all coldness and start blowing hot air. If I came to a stop it would get cold again (not every time). Sometimes if I turned the ac off by pushing the ac button and still having air blow, then turn it back on, it would blow cold air again.

One thing i noticed is that when it stopped blowing cold, it would release a distinct smell. Definitely not a burning smell. Hard to explain, but I didn't recognize the scent. I've read about vents smelling moldy, but it only emitted the smell when the a/c lost coldness.

I'm not a heavy a/c user, mostly windows down, so only on really hot days. Anybody else have this problem?

red6spd · 07-12-2011, 08:18 AM

Did you accelerate hard? Some cars cut out the AC when you ask the motor for alot of power.

Premo34WV · 07-12-2011, 08:22 AM

No, just normal acceleration. Maybe 4000rpm shifts tops.

DjSquall · 07-12-2011, 08:26 AM

The decompressor thrust bearing failed.

( Click to show/hide )

07-12-2011, 08:15 AM	#1 (permalink)
Premo34WV Base Member Join Date: Jun 2009 Location: Morgantown, W.Virginia Posts: 68 Drives: PW '09 370z Sp. 6mt Rep Power: 15	A/C problem So Im driving yesterday in 95 degree weather and my a/c starts going in and out. It seemed like when I accelerated it would lose all coldness and start blowing hot air. If I came to a stop it would get cold again (not every time). Sometimes if I turned the ac off by pushing the ac button and still having air blow, then turn it back on, it would blow cold air again. One thing i noticed is that when it stopped blowing cold, it would release a distinct smell. Definitely not a burning smell. Hard to explain, but I didn't recognize the scent. I've read about vents smelling moldy, but it only emitted the smell when the a/c lost coldness. I'm not a heavy a/c user, mostly windows down, so only on really hot days. Anybody else have this problem? Last edited by Premo34WV; 07-12-2011 at 08:18 AM.

07-12-2011, 08:18 AM	#2 (permalink)
red6spd A True Z Fanatic Join Date: Apr 2010 Location: Long Island NY Posts: 3,277 Drives: 2010 Z Coupe M6 SPT Rep Power: 21	Did you accelerate hard? Some cars cut out the AC when you ask the motor for alot of power. __________________ 2010 Base+Sport 6spd: Stillen G3, FI Non-Resonated CBE, FI Non-Resonated Test Pipes, UpRev Tuned, Custom 24R Oil Cooler, JDM Rear Fog-OEM Harness. ???Whp ???WTQ (Will find out come spring time)

07-12-2011, 08:26 AM	#4 (permalink)
DjSquall A True Z Fanatic Join Date: Apr 2010 Location: Tottenham, ON Age: 36 Posts: 1,340 Drives: My first car Rep Power: 22	The decompressor thrust bearing failed. ( Click to show/hide ) What's really going on is your blower motor is overheating and shutting off on thermal overload. The smell you're getting is the lacquer melting on the motor windings. It needs replacement. Have your dealer take a look, it's under warranty.

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07-12-2011, 08:22 AM	#3 (permalink)
Premo34WV Base Member Join Date: Jun 2009 Location: Morgantown, W.Virginia Posts: 68 Drives: PW '09 370z Sp. 6mt Rep Power: 15	No, just normal acceleration. Maybe 4000rpm shifts tops.