So recently after I start up my car and turn on the A/C shortly after a loud humming sound is heard and when I step on the accelerator the car feels like its weak on power. I usually turn it off right away and after a minute I turn it back on and everything is normal. What could be causing this??
Loud humming sound and weak power when A/C is turned on
- Thread starter JDMRyde
- Start date
STIBungy
Member
- Location
- Denver, CO
- Car
- 2007 FX35 AWD
Mine hums too. But I wouldnt say its loud, just noticeable.
GOFAST24
Member
- Location
- Sugar Hill GA
- Car
- 2011 FX35 RWD
I do the same thing turning off the A/C a mile or two before I get home but for a second reason, let some of the condensate dry off the evaporator and air ducts which reduces that musty smell you get when you re start the car and the blower starts moving air again.
teemoney
Member
- Location
- Toronto, Canada
- Car
- 2007 Infiniti fx35
When my ac is on i get a little humming noise too, nothing loud but noticeable. I always thought the fx felt a little sluggish when the ac was on too. Just thought this was normal
- Location
- Atlanta, GA
- Car
- 2007 FX35
AC compressor is going to cause extra load on the system, one more thing for the engine to turn. But if you got WOT, it will disengage so you're not losing power then. If it's really sluggish, I'd suspect that something is going bad, likely the compressor or the clutch. It's weird that turning it off and turning it back on would fix it though. Have you checked all the relays to the AC?