Lexus SC430 :: AC Started Blowing Hot Air
Mar 30, 2013
A few months my AC starting blowing hot air. When I was at the dealer, they claimed the compressor was bad and wanted over a 1000 to replace. I looked online when I was there and said the new denso compressor was about 300 online. They wanted double. I just left and didn't worry about it since it was about winter then. Now I need to get it fixed.
A guy noticed the other day when I cut the AC button on, the clutch engaged and cut back off. He didn't have time to fully check it that day and wants me to bring back if I can another day.
I did some searching on this board, but haven't seen compressor issues with the SC430. I have a 94 ES300 and a 2004 RX330 and neither have had compressor issues. So I am shocked at this anyway.
I bought a relay, but that did not work. I just read on the LS forum that a lot of people have had problems with the AC pressure switch.
I understand that switch could prevent the compressor from coming on when the switch goes bad. Do we have that switch on the 06 SC430? If so, where is it? I can't find a part number listed in All data. I would love to check it before spending a ton of money on compressor replacement.
By the way, I have plenty of refrigerant. They checked that at the dealer and added some then. And I did AC diagnostics and show no codes.
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Since summer is coming up I decided to change my cabin air filter because the car started to stink especially when its humid outside. I was not so surprise on the condition of the filter!!!
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My 2002 SC430 didn't start this evening.
The engine turns over as normal, I can smell the unburnt fuel out the exhaust. I can hear the fuel pump working etc. It gives a slight cough upon first turn of the key but will not come near firing up properly. The engine turns over at speed from the starter but without any further signs of ignition.
The car's key is unlocking the car with the remote on the key as normal so I don't think it's an immobiliser issue. The battery is fully charged and turned the engine over for about 5 minutes in total during the hour I tried to start her in so there is no battery voltage problem.
A strong side issue is that the heater fan started to switch on and off by itself yesterday, and this morning stopped altogether on the drive home. Another thing is that the heater fan briefly turns for one tenth of a second of so when switching the car off, even when selected to off on the climate control screen.
I disconnected the battery, pulled out the ECU to check for visible problems on the connectors like corrosion, damp etc but found none. The earth straps in the engine area all seem good, all fuses seem good too. I've pulled and re-installed all the visible engine bay fuses, but nothing improved. No big fuses are blown that I can see. The cars remains a non-starter and the heater fan still won't operate as normal.
Lastly, the boot / trunk area seems to be quite damp so I let it open for a while to dry out tonight.
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I've went onto TIS and received some info in regards to the electrical components of 2002 sc430.
Fuse 19 on Passenger Box: Interior light, personal lights, vanity lights, foot lights, ignition switch light, trunk light, antenna, garage door opener system audio system.
Each time I install a new fuse, it immediately pops. Wondering how to diagnose root cause. Often it seems that wires ran through door grommet can become exposed....I have done no modifications to the vehicle. Not sure if there is a particular area I should start looking for exposed wires, I have a feeling it is going to be a long process with my skill level to find the short.
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I have a 2003 sc430 that keeps blowing bulbs????? It's just the driver side that keeps blowing! What are the correct bulbs or led ....
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The tachometer needle in my 2002 SC just started sticking. What did you do to resolve it?
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The fan for the AC started blowing at high the other day when it was first started which is normal when its hot out. But after a few seconds it slowed then picked up, them slowed, the picked up. Just like it was confused.
I turned it off and then back to AUTO and it was OK again. This happened twice now in the last three days when it was hot out. Today the fan would not start until I turned it off and on a few times. Blower, blower resistor, AC dash control.
'02 TB w/ auto climate control.
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My wifes car AC just started blowing warm. I figured it was getting a little low on refrigerant. So I went and bought a can with the gauge on top, and I connected it and it was reading half way into the red zone....way overcharged. But nobody has put any in the system since we bought the car over a year ago. The AC has been great for all this time. So how can it be blowing warm and be overcharged that much without overheating the cars engine ? The clutch is coming on with the compressor?
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I have a 2005 Yukon XL. In Oct 2010, my front A/C started blowing hot air even though it was set to cold. Nothing has happened since then, except that about a month ago, the A/C in the front stopped working but the A/C in the back still works great. The one in the front works when it wants to (once or twice in a week) and when it does, there is cold air coming out of it. We live in FL so it is getting pretty hot to not have A/C and we are going on vacation soon. What can be causing my A/C to work like this?
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I've got a 2007 Sonata that has started blowing HOT air. It's like the compressor isn't on. In looking for the issue, I looked for blown fuses first because I find it hard to believe that the AC would work fine and then stop working minutes later. Sure enough, I found a blown A CON fuse in the fuse box under the hood. No problem right? Just replace it and everything will be A-OK. WRONG. Every time I replace the fuse and test the AC it blows. I'm thinking maybe something with the relay?
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My 06 mazda has recently started blowing smoke from the exhaust and jerking it self when accelerating.i have changed the spark plugs and i found one soaked with motor oil. The car only has 75000 miles on it....
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Alright, so we had an unfortunate run-in with a parking space and I ripped the front under-tray off, not sure what it's actually called. I still have it, the eyes are just ripped out.
But that's not my main issue. The main issue is that the A/C only blows hot now. I know you can sometimes kill a condenser, because road debris will puncture it, but how do you know for sure what's wrong? I'm good with my hands and not afraid to take my car apart, I'm just wanting to be sure before I go ordering parts. I have the relevant sections of the repair manual, but if it's the ES18 compressor or something, how would I know? And is there any way to know without taking the bumper off?
I'll also need a source for ND OIL 11..
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I have a 1988 Toyota Camry LE V6. And recently the heater just started blowing ice cold while on the hot setting.
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Out of nowhere my fuse #30 has started blowing - thats the one that supplies the DC outlet points, or cigarette lighter plugs. And no, there are no pennies stuck in the outlets!
I've removed and unplugged all 4 outlet points from the loom, thats the one on the dash, inside the center console, behind the center console and lastly the one in the boot. Still a total dead short.
I've disconnected the 220v AC inverter thats behind the center console, and still measure a dead short.
What else does this fuse/line supply? The only things not working are my lighter plugs, everything else seems fine. Any wiring diagram perhaps - I'm sure there hasn't been much of a change in interior wiring over the years.
2009 2.0 TDi
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I have an 05 prius that has been a great car 193,000 miles with no issues, until now. AC started blowing warm air so took it to mechanic who replaced the compressor. Blew cold for a day and started blowing warm again. Took it back to mechanic replaced the evaporator. Same thing blew cold for a day and then warm air next day.
Mechanic told me to take it to Toyota to get it looked at and they said 3 way coolant valve so we replaced that and still blowing warm air. Took it back to Toyota for the second time and they said it was a bad compressor so we replaced that and still no cold air. No AC in Florida summer is getting old fast need to get this fixed.
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Chrysler Town and Country. The engine warms up just fine regardless of my speed or throttle position, but the cabin heater has started blowing cold air when I back off or sit at idle. It may be relevant that we hear a lot of gurgling in the dash soon after starting the engine.
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I bought my 2005 prius used 6 months ago, all the mechanics work fine except my AC which started going in June.
Over 2 weeks it started blowing less, eventually nothing. Used the refrigerant (the correct one with no oil) and filled to around 33 every other day for a while and it would work great. Finally went to dealership 3 weeks ago, paid 140 and they replaced one valve (expansion valve? cannot remember) and filled it up and it worked for 1 week. They said a previous owner had dye put in and they saw the dye there.
Brought it back when I thought it was starting to go again and they said they saw a small amount of dye leaking in the evaporator but it would last 2 months minimum (obviously didn't). I was quoted 1400 for evaporator replacement.
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98 e150 - 4.6l, 185k, My air started blowing warm the other day. It worked perfectly fine. I checked the compressor to see if it was turning. Nope! I am wondering if it could be the clutch?
I replaced the alternator and changed the serpentine belt a couple of months ago and noticed a very slight whining sound sometime after I did this. I thought something might be going and just ignored it and said to myself, that's all the new tread in the new belt whining a little. Could be! not sure.
Anyway, where could I possibly start an easy procedure to see why the failure in the compressor not turning? Compressor is a lot harder to get at than an alternator!
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I plan on taking my (new to me) 2004 V8 Phaeton in for some CPO work - already.. A couple days ago all my Driver Side air vents (front, back, even ventilated seat) started blowing non-cooled air while the passenger side seemed to be working fine. You can literally stick your hand up and feel the difference between the left and right side of the clock.
The question is, are there 2 compressors - one for the left and one for the right? or is this some weird fuse that has blown and only affected the driver's side? The fan functions just the same - just not cooling the air on the driver's side. I have all the zones connected together and at the lowest setting for the test.
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My Stratus started blowing the starter fuses occasionally when I tried to crank the engine. It stopped for a while (about three months) but recently started doing it again and much more frequently now.
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Our 2008 Acura MDX started blowing black stuff through a/c system (driver and passenger sides). When I picked up a piece of it and crushed it in my hand, it would disintegrate into almost a powder-like substance.
We took it to the Acura Dealer and according to them interior filter and a/c vent look fine and they would have to take the whole dashboard apart to see if there is a problem. What it could be? It's not affecting the performance of the car and the AC seems to function just fine. This black net-like particles started last summer.
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