A/c compressor won't kick in after work perfectly

Sonyps307 · 09-06-2011, 03:04 PM

First off my a/c coil burnt up so I replaced it. Then after that it still would not work. so then I found that the 10amp on pass side blow change it. Then the a/c was working great for 3 days. Till the 10amp blow again so I put a 15 amp in it and nothing a/c don't work. Also the system is full.

I checked already The CB, the relay under the fuse box out in bay, 15 amp cig, dual pressure switch. The only thing i didnt check was the amplifier but I don't know where it is or what is looks like.

cre · 09-08-2011, 05:25 AM

Is the fuse blowing immediately? Have you tested for shorts to ground? What "A/C Coil" are you referring to? The blower resistors?

The A/C Amplifier is behind the ECU: http://www.cygnusx1.net/Supra/Librar....aspx?S=AC&P=8 A real pain to get to if I recall.

Is the blower working?

Sonyps307 · 09-08-2011, 06:14 AM

The blower works fine. The fuse blow 3 days after working perfectly so i replaced it and havnt check it since. The coil I'm taking about is the one on front of the compressor the one that engages the clutch. I have not check for shorts yet.

87hilux7mge · 09-11-2011, 04:06 AM

i believe he means the magneto. check to see if you clutch is bent or deformed at all. more likely tho the magneto is pulling too much power, fried the fuse and then burnt the link at the compressor.

idk, i try not to deal with a/c systems too much, they just make me mad. so i take them off and roll the windows down.

09-06-2011, 03:04 PM	#1
Sonyps307 Lexus & 550's Join Date: May 2010 Location: Baltimore Posts: 526	A/c compressor won't kick in after work perfectly First off my a/c coil burnt up so I replaced it. Then after that it still would not work. so then I found that the 10amp on pass side blow change it. Then the a/c was working great for 3 days. Till the 10amp blow again so I put a 15 amp in it and nothing a/c don't work. Also the system is full. I checked already The CB, the relay under the fuse box out in bay, 15 amp cig, dual pressure switch. The only thing i didnt check was the amplifier but I don't know where it is or what is looks like.

09-08-2011, 05:25 AM	#2
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	Is the fuse blowing immediately? Have you tested for shorts to ground? What "A/C Coil" are you referring to? The blower resistors? The A/C Amplifier is behind the ECU: http://www.cygnusx1.net/Supra/Librar....aspx?S=AC&P=8 A real pain to get to if I recall. Is the blower working? __________________ If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum. If you're so inclined I'm always more than happy to accept tips via PayPal. Tip Jar --->

09-11-2011, 04:06 AM	#4
87hilux7mge walbro fp Join Date: Dec 2010 Location: spokane Posts: 479	i believe he means the magneto. check to see if you clutch is bent or deformed at all. more likely tho the magneto is pulling too much power, fried the fuse and then burnt the link at the compressor. idk, i try not to deal with a/c systems too much, they just make me mad. so i take them off and roll the windows down. __________________ 87 toyota 4x4 single cab short box pickup, 7MGZE.

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09-08-2011, 06:14 AM	#3
Sonyps307 Lexus & 550's Join Date: May 2010 Location: Baltimore Posts: 526	The blower works fine. The fuse blow 3 days after working perfectly so i replaced it and havnt check it since. The coil I'm taking about is the one on front of the compressor the one that engages the clutch. I have not check for shorts yet.