Lexus GX 2004-09 :: GX470 AC Suddenly Stopped Blowing Cold Air And Engine Temp Hot
Aug 28, 2012
For the past week, my wife's 2004 GX A/C has been blowing hot air off and on. At first I thought this was due to low refrigerant but after pressure testing it appears to be full. Yesterday afternoon I was driving the car home and the A/C was blowing cool air then suddenly stopped again, I happened to look at the engine temperature gauge and noticed it creeping to "H". I shut down the air all together, pulled over and it cooled. The gauge actually stayed below the half way point the rest of the way home, until I had to stop at a light, then it slowly climbed up to the "H" again, the lowered as I drove to a cruising speed 55MPH. One home, I looked at the coolant reservoir and there was no fluid in it (not sure if this is normal) and there was no sign of smoke or fluid leaking. Could this be a thermostat issue, radiator issue, loss coolant issue???
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As I was driving, my break light came on and my ABS light came on. Also, the temp gauge stopped registering and my AC stopped blowing cold air. Is this a familiar problem or do i have a legit electrical problem.
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I have a 2006 GX 470 with 130,000 miles on it. Recently, when driving on long trips I have noticed that the SRS bag light will come on after we stop after driving for a while. To be a little clearer, the car will start normally when cold, all dash lights will go through their sequencing and turn off. We will drive for a distance which will be long enough to heat everything up, say to the mall or a restaurant.
When we return to the car and I start it all lights go thru their sequencing and the SRS light stays on. Next morning, after the car has cooled, everything is normal again. Lexus says it is the 89170-60241 sensor assembly that is $489.26 plus $310.95 in labor to replace. While I have owned the car I have successfully replaced the air suspension rear sensors and all the O2 sensors and recently did an engine swap with my son on his Toyota Supra so I think I can handle the repair. Where is the sensor located and how is it accessed??
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My car: 2008 Prius (base)
Here is the problem: All of a sudden the two middle vents in the dash stopped blowing. I have played with the settings - on, off, all the way hot, all the way cold - nothing from the two mid vents. The left and right vent blow with no problem. There is also cold air coming from the vent near the windshield - just the two middle dash vents are not functioning.
What I have done so far: I had it looked at by a mechanic who I trust. He said there is a small motor (he called it a servo motor) that controls that middle vents (open/close). He said that had gone bad. He manipulated it so that the air blows out of the vents now and said not to change any settings until I am ready to replace the part.
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It's my 2005, 2.7l. auto trans, FWD.
AC stops blowing cold when the engine temp get hot. As long as the car is moving, it blows nice and cold. Also, when sitting the engine temp rises quickly and will over heat if you don't get moving.
Cooler fan on the inside of the radiator never kicks over to high mode as the temp goes up. I checked the fuses and the relay and both are good.
That leaves me with a bad fan? Correct? Also, what is the part number of the fan?
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The heater/ac blower stopped working on my 2004 Lexus GX470. All the lights and display work but the fan doesn't work on any speed. I replaced the relay in the fuse box under the hood but no luck. I removed the blower and it works when I hot wire it to the battery. I checked the voltage coming into the blower and its at 13.5V, same as coming off the battery but it doesn't turn the fan.
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I just found my 06 GX470 front vent stopped working while the rear still can get wind if I turn on rear cool. What could be wrong? fuse? Where is the fuse box?
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I love my 2005 GX 470, but the A/C takes a few minutes of driving to get cold. It eventually performs like it should, but it shouldn't take 5+ minutes for the output to be cold I wouldn't think ...
IS THIS NORMAL for this vehicle or is there an issue? what is YOUR experience? My MDX will freeze you out after about 20 seconds of operation ...
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Rear heating system in my Lexus GX470 only blows cold air, what could be the problem. Front heater works fine.
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My wife and I are on a 2400 mile cross country road trip road trip and we just got a check engine light about 12 hours away from home. The check engine light, VSC, and tons of other lights appeared. Shortly after our cruise control disengaged and then A/C stopped blowing cold air. We were cruising along in 100F degree weather at about 75-80mph climbing a 10-mile incline with the AC on full blast.
We got to a Toyota dealership but they are closed until Monday so we'd have to wait 2 days for them to check it out. We went to pep boys and they found the code to be "Drive Motor B" which they said should be fixed by Toyota dealership (but he said he didn't really know what the issue is).
I did a quick search and found this might be the inverter coolant pump. Like another poster, I found the car seems to work okay when the AC is off.
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On Tuesday July 16th was driving along AC was on and all of sudden I heard a squeal coming from the engine compartment. The AC stopped blowing cold air then the A/C light started the flash (manual Air conditioning). I turned off the AC and finished out my day with the windows open.. I have read the post about the flashing A/C light but I am wondering if I should address the squeal 1st I only hear it when the A/C is turned on.. 2006 Camry V6 137K miles.
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Ok, so about 3 months ago I noticed the fan was blowing kinda loudly, but stopped. Then 2 weeks ago, my AC just stopped the next morning it started blowing again, then 2 days later it stopped again and hasn't come back on. When I try to turn it on I can feel a light trickle of cool air but I don't hear the fan. .. what does this sound like?
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All of a sudden, all 3 of my outlets for charging stopped working...can't charge my cell phone!
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I have a 2005 GX 470, I noticed a sound, like that of a belt being loose, the sound came from the front of the truck. A few minutes later the AC stopped cooling, it was blowing really hot air and then the temperature of the engine went really high. I stopped on the side of the road, when we opened the hood, the belt was not broken but there was antifreeze everywhere.
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I have a 2004 2nd generation Toyota Harrier (Lexus model RX330). The A/C blowing hot air if temperature is not set to Max Cold. This happened no matter whether turn on the A/C with Auto or Manual setting. This case also happen no matter whether setting the A/C system to Dual mode or not, no matter whether turn on or off the air intake control button.
As long as A/C on, cold air only come out when temperature set to Max Cold, even if set to 18 degree, full hot air come out. Another thing is, say I have the A/C on, set to max cold, cold air came out from the front vent, but after I try to increase the temperature to say 18 degree, the hot air flow will change to Floor/Windshield mode.
Could it because due to the change of the battery? Is there anything need to reset after replacing the battery?
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It seems my A/C isn't blowing cold air all the time. It's as if the compressor isn't kicking on or is intermittent. It eventually does, but it takes a long time to cool the vehicle. I've had it about 6 years and it has definitely changed. Vehicle is an '04 with 106K now.
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Having bought my 06 GX 470 only a few months ago, we're encountering 90-degree-plus days for the first time. There is an unusually loud noise from the engine that I'm almost sure is cooling fan noise. It occurs after running in the heat of the day. It's not mechanical noise, but a loud roar like that of a large truck engine. Is this typical for these models in the heat?
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How to diagnose the engine issue I am having. The gx currently has 96k miles and I am planning on doing a timing belt and water pump replacement as I plan on keeping it as long as possible.
One new issue that crept up is that when going down the hill the car engine sounds like it's actually accelerating and the RPM drops to as if it was idling.
Normally when going down the hill it usually stays around 1 or 2 on the rpm, it's noticeably different and just started happening recently. What might be the cause of this?
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06 GX470 muffler exhaling white smoke for a while, now the smoke disappeared, however, a new hissing engine noise is evident. The noise increases with the revolutions of the engine and it never stops.
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I just purchased a used a Lexus GX470. The transmission seems to do something fairly consistently that seemed unusual to us, but we are new to this car so I'm not sure if it is normal, abnormal, or a sign of something big to come.
When starting from a complete stop, upon removing your foot from the brake, there is a noticeable mini-surge in the engine as the transmission engages, and the sensation seems to repeat when the transmission is disengaging as you brake to stop.
Does this sound normal? From searching on google, I have read that there are issues with "hard shifting" but this does not seem to happen with shifting...just when the transmission engages or disengages, and it isn't a big 'bump' as much as a mini-surge. I have also read where it could be related to something electrical such as the air conditioner.
The car is under warranty, but the service department notes no error codes when they scanned the engine.
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I have a 2004 GX470. Now that the weather has dropped I have noticed that my heater is taking a long time to warm up all it does is blow cold air out of the vent. Subsequently I have started to notice that they car will start to overheat. It will never get to the point where it will hit the red but it will go up and then come back down to mid range. There doesn't seem to be anything else wrong with the car, it idles fine, starts fine etc. Could these two issues be related?
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