Engine Size: 4.7
Refrigerant Type: 134a
Ambient Temp: 95
My AC light started blinking yesterday and the it quit cooling. When you first turn on the AC, I hear a grinding noise for about a second. The front plate on the clutch tries to spin maybe a quarter turn. After another second, the light starts blinking meaning the system has shut down. With the car off, I can spin the front plate by hand. If the compressor was seized, I do not believe I could spin this. Does this sound like a clutch or compressor problem? The compressor is a NipponDenso type 10S20C .
Sounds like a compressor problem to me. The reason you can spin it freely when its off is because the clutch isnt engaged. You are turning just the front part, not the whole compressor. Most likely your compressor is siezed. Good luck.
2008 Chevrolet Impala LS
1981 Pontiac Bonneville
2007 Sears Craftsman Lawn Tractor
1985 Chevrolet Caprice
1986 John Deere 165 lawn tractor
Yep. More than likely a compressor problem. The blinking light usually indicates that the "guts" of the compressor isn't turning at the speed the computer is expecting. Could be a loose drive belt, could be a bad speed sensor in the compressor, could be a bad clutch, could be a bad compressor.
The dealer replaced the compressor. They gave me a choice, Toyota part for $1300 or aftermarket for $400. I chose the aftermarket. I picked the car up on Friday and everything seemed to be working fine. I made a trip today (Sunday) and the compressor cycled on and off for about 20 minutes before it started cooling 100%. This was a four hour round trip drive. I made a stop for lunch and when I started driving, it would only blow cold air for about 20 seconds every 4 or 5 minutes. After about 20 minutes, it started working correctly for the next hour. This same event happened once again on the return. This time it seemed to take about 30 minutes before it started working properly. Any ideas? I am taking back to the dealer in the morning.
Edited: Sun June 15, 2008 at 11:46 PM by Rmor
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