'93 Lexus ES300 A/C + Smoking? - AC Auto Repair Help Forum


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'93 Lexus ES300 A/C + Smoking?

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eck
New User

Aug 7, 2007, 9:50 PM

Post #1 of 4 (2080 views)

'93 Lexus ES300 A/C + Smoking?	Sign In

Hi,

I have a 1993 Lexus ES 300. Lately, I've noticed that when I leave the A/C on for a while, it begins to smoke under the hood. I looked once and noticed that the smoking was coming from the top left corner or so. I've also smelled something like burnt plastic a few times when it runs. Sorry I can't be more detailed, but I'm not too car saavy. Any help would greatly be appreciated!

Thank you

Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Aug 8, 2007, 4:30 AM

Post #2 of 4 (2078 views)

Re: '93 Lexus ES300 A/C + Smoking?	Sign In

Of course this is tricky without look right at it. If A/C is performing well and no strange noises it may just be that the engine and cooling system are hotter as A/C puts an extra load on that.

The compressor has a clutch when engaged and if it's slipping it could make a burnt smell. If you just look at your compressor with the A/C with it running full blast, see if the outer plate in the front of the compressor is spinning at the same rate as the belt running the pulley there. If it slip it like riding a regular clutch. It won't do that for long before it will need to be adjusted or a repair to it. When compressor is off note that the outer plate is still as it should be. That's the way it works.

While you watch look for anything that's near hot items that may be too close and check fluid levels in everything and if one is low, find out why,

T

eck
New User

Aug 8, 2007, 1:23 PM

Post #3 of 4 (2072 views)

Re: '93 Lexus ES300 A/C + Smoking?	Sign In

Hey, just thought that I'd give an updated. Apparently, the smoke I've been seeing has got nothing to do with the A/C. Haha. I went to a shop today- a power steering line is leaking badly. It's odd though, because I didn't hear any grinding or anything until today. I'll get it taken care of though. Thanks anyway!

Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Aug 8, 2007, 4:07 PM

Post #4 of 4 (2071 views)

Re: '93 Lexus ES300 A/C + Smoking?	Sign In

Glad you found it. That's why I suggested check fluid levels in everything as I didn't really think it was the A/C either,

T

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