Lexus LS 2007+ :: Temperature Going Rapidly Up - Engine Cooling Fan Running At Max
Oct 15, 2012
2nd time happening to me: I started my car, backed up and drove few hundred feet before stopping at a traffic light.
While stopping there, I noticed the engine cooling fan was running at max and the temperature was going rapidly up (in less than 10sec the gauge almost hit the red line).
While the gauge was going up I shifted the gear stick to P and the gauge dropped to normal in less than 5sec.
I shifted back to D and the car drove normally ever since.
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So my o7 es350 with 75k on it just started acting really strange. I noticed while at a traffic light the temperature gauge was right in the beginning of the red zone. After being there for around 20 seconds it dropped back into the normal range. Then while driving it would randomly shoot up very quickly and then back down again, just as quickly (a couple seconds).
I sat and idled it for a while and the gauge slowly creeped back into the red, then in a matter of 15 seconds dropped back into the normal range. I checked the fan, and coolant levels and both seem to be fine. I called the dealership, but they were no dice at all.
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Have a 2001 Subaru Legacy GT, 5 speed manual, 194,000 miles.
A few months ago, I started noticing that my cooling fans are running more often. Even when it is cold out and the temperature gauge was at normal temperature. The fans would turn on, and just keep running. Obviously, they would turn off when I shut the car off, but if the car is on, they will stay on. However, I found a trick to get them to turn off. If I am in neutral, and I race the engine up to around 3000 RPM's or so for about 10 seconds, and let it come back down to idle speed, the fans are now off. Works almost every time, not just a coincidence.
I know my car, and this has never done this before. I know it is not normal. I have replaced the following- thermostat, coolant temperature sensor, flushed the system, changed the fan relays, and most recently, I put a brand new Subaru radiator in. All of this, and the issue is still there. I am beginning to wonder if it is the water pump. Coolant not circulating fast enough, so the fans come on to cool down, but when I race the engine, the water pump works harder circulating coolant faster? Also recently, the temp gauge starts to climb going up long steep grades. If I pull over and race the engine, the temp gauge drops almost immediately back to normal. The pump is not leaking or making any noise, so I'm not sure if it could go bad any other way.
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I'm working on 07sonata 2.4. The cooling fan is always on when key is on. I used to be a hyundai tech and remembered seeing something about the engine room fuse box and I have access to wiring diagrams. So in essence you go to connector jc01 pin 2 pink and connector je01 pin 25 pink. Cut the wires and connect them together bypassing the fusebox all together. But that didn't work this time. One thing I discovered is that if I touch my power probe to the heatsink of the fan control module I have battery voltage available. I first discovered this because I was removing said module and my 10mm touched it when it slipped a touch.
Is this 'hot' heatsink evidence of a shorted module? No codes in system. Ect tests good when hot and cold. A/c is not commanded on. Being that I used to be a tech for Hyundai I also know the engine fuse box can be touchy as well...
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About 4500 miles ago, I had the timing belt, water pump, thermostat, and all the accessory belts replaced and now, the water temp gauge sometimes rises rapidly from "normal" all the way to the "red" and back within about 15 seconds! This is on a 2006 Elantra GT
Should I replace the "coolant temp sensor" or do I have a real problem that needs repair?
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Just bought a 2013 GS 350 FSport. Noticed the cooling fan runs kinda loud. Seems to run a little louder than prior cars. Had the car inspected at a Lexus dealer before purchase. They didn't say anything about it.
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We're on our 3rd hybrid. Our new RX450h traction battery cooling fan under the back seat seems to run consistently after the car is driven for a few minutes. Our previous Prius and CT200h did not exhibit this. Is this typical of the 450h?
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My 05 V8 Phaeton radiator cooling fan is not running and hence engine overheats. The AC cooling fan works alright, it comes on when i switch on the AC. I have verified that the actual radiator cooling fan works by plugging it to the ac cooling fan socket. I have checked fuses and all ok. there are no dealers near me. I have also gone through all the cooling fan threads and all of them are for constant running fans, none for a non running fan.
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I noticed that in some cars (even new ones) the cooling fan stays on for a minute or two, even after the engine has been turned off and the key removed.
This caused me a little bit of curiosity —keep in mind I'm not very car-savvy— so I wanted to ask: Why is that?
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Got out of car to open garage, car locked itself up with engine running. Had key fob in pocket. Nothing worked from fob. No unlock, open trunk, or sound horn.
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So my lovely wife tells me that something sounds sounds like it is rubbing from underneath the hood of my Lexus. So I take it to the dealership and they tell me it's the the the tensioner for the timing belt needs to be replaced. So I have them replace it and In the process they tell me that it sounds like there is something wrong with the fuel pump but they were able to quiet down though I don't understand how. Anyway after I pick the car up it sounds exactly the same as it did when I left it, personally I don't feel like I should pay for labor on this repair but besides that I don't understand what this issue could be. It sounds like something is rubbing while the car is running.. Lexus 2002 ES300 ..
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Both engine cooling fans on my 1986 Camry are running all the time; even when the engine is cold.
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I'm at 47000 miles. Out of no where the fan began to run and its been running most of the time when i turn on the engine.
There's no CEL, engine temp gauge is normal at 200. Coolant levels above MIN.
What might be triggering the fans to go on? I'm suspecting it might be coolant thermostat sensor.
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I have a problem with the engine cooling fan (driver side) - is not running. The other fan is working properly. On this arrangement driving on the high way the engine cooling is OK. Driving in the city the oil temperature is richening 215 -220 F (however the water temp. is OK at 200F) and the AC unit is stopping (I am assuming because of that). V8 Phaeton...
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My wife's 2007 wasn't cooling very well. I put a gauge on it and it was slightly low so I added a can of R134. Cooled better for a (very) short time. Now it doesn't cool at all.
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I own a 2004 Silverado 1500. Nearly every time I drive, I loose temperature control on the driver's side after about 15 minutes of running the engine. The passenger's side seems to be working fine. I'm not sure if it is a bad rheostat on the driver's side or a bigger issue.
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Today my a/c stopped working, it just blow normal temperature air not cooling, never had a bad experience with it before, I even use it not on the lowest set up, always on 19 Celsius. It was working fine when i arrived at work, 10 minutes later My boss told me to pick something up and when I turned the a/c on it Never worked.... Is this normal?
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I notice that I am not getting much if any cool air out of the front seats when I have that feature on. I assume that the filter needs to be changed in my '08 LS. The Lexus bible says to see a Lexus dealer to have that done. I want to know where that filter is and if I can buy it and install it myself.
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When taking our 2007 RX out of say a 72 degree garage to say a 90 degree day, it takes at least 10 minutes for the outside temp gauge to finally creep up to the ambient temperature. The gauge feels very sluggish at all other times.
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This video is about the Toyota Prius Gen 3 Temperature Indicators and cooling system overheating. I thought the prius did not have temperature indicators but found out it did, so this video is about how to know if your toyota prius is overheating and understand the basics of its cooling system.
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My center speaker grill in the middle of the dashboard makes rattle noises when the temperature drops. So in the summer the parts expand to be tight and no noise. As soon as the temp drops <60F, the parts shrink slightly and the speaker grill makes all kinds of creaking, rattling noises as the car goes over bumps, goes around turns, etc.
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