Turbo Engine Cool Down
#31
^^^ Funny you mention a faint burnt smell. I noticed it a couple times in the interior and thought it was one of the seat heaters, or heated steering. I don't believe to have noticed it any other time now nor anywhere outside and my thoughts were that manufacturing residue emitted that smell and has worn off (or burned off from the heating elements). I have been driving very lightly and idling 5-10 seconds before engine shutoff and no smell outside. I'll pay closer attention the next few days...
#32
Lexus Test Driver
Interesting topic guys.. and thanks for this information, corrado. I've had my F Sport for about a week now but every time I get home in the evenings, I set the car on park, turn off the engine and immediately in my garage, I can smell a faint burnt smell.. turbo engine of course.
I typically drive 35 minutes to work each day at about 65-80mph. I guess I have to sit in the parking lot of my office building for 2-3 minutes every day to let the turbo cool down now.
I typically drive 35 minutes to work each day at about 65-80mph. I guess I have to sit in the parking lot of my office building for 2-3 minutes every day to let the turbo cool down now.
Many times its any of the following breaking in:
1. Exhaust - your packing in the muffler is burning or any lubricant they put onto the exhaust as it was being assembled is being burned off, or can even be stickers catching fire and falling off. (You'll notice that smell will go away, right around the same time that your car got slightly louder.)
2. Radiator Coolant Lines - Your car is not broken in before you get it, thus, you are finally starting to heat cycle the lines and the smell you are getting is the rubber hoses being heated which will smell like a burned rubber
3. Gaskets - Gaskets will break in during break in and expand. That is why during initial break in that your oil consumption will be higher than any other time. You will blow by oil (which will burn in your exhaust), and you will also get slight oil vapor around the head gasket until the gasket expands and sets.
There are a few others, but thats the beginning. Overall, you're fine. My camaro had all of these, and even smelled terrible like clutch for the first 1,500 miles. Then everything went away. My wife's IS still has a packing smell when she gets home from work and the car has 2,500 miles on it now.
Speaking of exhaust, is there an aftermarket offering?
Last edited by Swacer; 01-14-15 at 05:43 AM.
#33
new cars will always give off that smell.
Many times its any of the following breaking in:
1. Exhaust - your packing in the muffler is burning or any lubricant they put onto the exhaust as it was being assembled is being burned off, or can even be stickers catching fire and falling off. (You'll notice that smell will go away, right around the same time that your car got slightly louder.)
2. Radiator Coolant Lines - Your car is not broken in before you get it, thus, you are finally starting to heat cycle the lines and the smell you are getting is the rubber hoses being heated which will smell like a burned rubber
3. Gaskets - Gaskets will break in during break in and expand. That is why during initial break in that your oil consumption will be higher than any other time. You will blow by oil (which will burn in your exhaust), and you will also get slight oil vapor around the head gasket until the gasket expands and sets.
There are a few others, but thats the beginning. Overall, you're fine. My camaro had all of these, and even smelled terrible like clutch for the first 1,500 miles. Then everything went away. My wife's IS still has a packing smell when she gets home from work and the car has 2,500 miles on it now.
Speaking of exhaust, is there an aftermarket offering?
Many times its any of the following breaking in:
1. Exhaust - your packing in the muffler is burning or any lubricant they put onto the exhaust as it was being assembled is being burned off, or can even be stickers catching fire and falling off. (You'll notice that smell will go away, right around the same time that your car got slightly louder.)
2. Radiator Coolant Lines - Your car is not broken in before you get it, thus, you are finally starting to heat cycle the lines and the smell you are getting is the rubber hoses being heated which will smell like a burned rubber
3. Gaskets - Gaskets will break in during break in and expand. That is why during initial break in that your oil consumption will be higher than any other time. You will blow by oil (which will burn in your exhaust), and you will also get slight oil vapor around the head gasket until the gasket expands and sets.
There are a few others, but thats the beginning. Overall, you're fine. My camaro had all of these, and even smelled terrible like clutch for the first 1,500 miles. Then everything went away. My wife's IS still has a packing smell when she gets home from work and the car has 2,500 miles on it now.
Speaking of exhaust, is there an aftermarket offering?
#34
Warning label?
I find it curious that Lexus hasn't made 'turbo care' a bit more prominent for customers, especially considering how litigious society has become. My guess is only telling an owner about it on page 168 of the owners manual will mean 99% of owners will never read it.
I stumbled across this warning sticker on the door of an 87 Supra that's up for sale on eBay. It emphasizes high-speed driving, uphill driving, or towing. Curious that Toyota would do this then, but not now.
And here's the ebay listing - the picture of the door and sticker is about 1/3 of the way down. There's also a picture of the turbo timer that was dealer installed back then...
http://www.ebay.com/itm/Toyota-Supra-NO-RESERVE-1987-supra-turbo-survivor-original-60-280-mark-iii-7-m-gte-5-spd-2000-gt-/271734215708?forcerrptr=true&hash=item3f449f141c&item=271734215708&pt=US_Cars_Trucks
I stumbled across this warning sticker on the door of an 87 Supra that's up for sale on eBay. It emphasizes high-speed driving, uphill driving, or towing. Curious that Toyota would do this then, but not now.
And here's the ebay listing - the picture of the door and sticker is about 1/3 of the way down. There's also a picture of the turbo timer that was dealer installed back then...
http://www.ebay.com/itm/Toyota-Supra-NO-RESERVE-1987-supra-turbo-survivor-original-60-280-mark-iii-7-m-gte-5-spd-2000-gt-/271734215708?forcerrptr=true&hash=item3f449f141c&item=271734215708&pt=US_Cars_Trucks
Last edited by knox_sport; 01-18-15 at 12:12 PM.
#35
Lexus Test Driver
I find it curious that Lexus hasn't made 'turbo care' a bit more prominent for customers, especially considering how litigious society has become. My guess is only telling an owner about it on page 168 of the owners manual will mean 99% of owners will never read it.
I stumbled across this warning sticker on the door of an 87 Supra that's up for sale on eBay. It emphasizes high-speed driving, uphill driving, or towing. Curious that Toyota would do this then, but not now.
And here's the ebay listing - the picture of the door and sticker is about 1/3 of the way down. There's also a picture of the turbo timer that was dealer installed back then...
Toyota Supra No Reserve | eBay
I stumbled across this warning sticker on the door of an 87 Supra that's up for sale on eBay. It emphasizes high-speed driving, uphill driving, or towing. Curious that Toyota would do this then, but not now.
And here's the ebay listing - the picture of the door and sticker is about 1/3 of the way down. There's also a picture of the turbo timer that was dealer installed back then...
Toyota Supra No Reserve | eBay
Its in the manual, so they probably thought that was sufficient (however, how many people actually read their manual at length?). Additionally, they probably have done enough research to prove that even if someone didn't do teh cool down, the turbo would be fine over time. Abused...but fine.
#36
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I have never had a vehicle with a Turbo engine. I began reading up one them to be ahead of the curve when I purchase the NX.
It seems as though it is recommended to let the car idle for 20-30 seconds before turning it off, in order to let the Turbo Engine cool down. Does anyone know if this is also true for the NX? Seems kind of odd to have to sit there and let it idle before getting out every time.
Sorry if any of my wording is wrong, I have never heard of this before today.
-Dennis
It seems as though it is recommended to let the car idle for 20-30 seconds before turning it off, in order to let the Turbo Engine cool down. Does anyone know if this is also true for the NX? Seems kind of odd to have to sit there and let it idle before getting out every time.
Sorry if any of my wording is wrong, I have never heard of this before today.
-Dennis
#37
Thank you for this info re: the turbo cool down as I'm sure it would be a while before I got to page 168 of the owner's manual!
I can confirm this as well. Had an exhaust changed out recently on my Isuzu Trooper and it smelled pretty strongly for a few days till whatever was on the muffler burned off.
I've also noticed test driving that cars with almost no miles have a much stronger smell when the engine/exhaust heats up than those that already have a few hundred miles on them. I drove a Subaru Outback that had just been delivered once and the smell was so strong my wife got nauseous.
new cars will always give off that smell.
Many times its any of the following breaking in:
1. Exhaust - your packing in the muffler is burning or any lubricant they put onto the exhaust as it was being assembled is being burned off, or can even be stickers catching fire and falling off. (You'll notice that smell will go away, right around the same time that your car got slightly louder.)
Speaking of exhaust, is there an aftermarket offering?
Many times its any of the following breaking in:
1. Exhaust - your packing in the muffler is burning or any lubricant they put onto the exhaust as it was being assembled is being burned off, or can even be stickers catching fire and falling off. (You'll notice that smell will go away, right around the same time that your car got slightly louder.)
Speaking of exhaust, is there an aftermarket offering?
I've also noticed test driving that cars with almost no miles have a much stronger smell when the engine/exhaust heats up than those that already have a few hundred miles on them. I drove a Subaru Outback that had just been delivered once and the smell was so strong my wife got nauseous.
#38
Lexus Test Driver
Thank you for this info re: the turbo cool down as I'm sure it would be a while before I got to page 168 of the owner's manual!
I can confirm this as well. Had an exhaust changed out recently on my Isuzu Trooper and it smelled pretty strongly for a few days till whatever was on the muffler burned off.
I've also noticed test driving that cars with almost no miles have a much stronger smell when the engine/exhaust heats up than those that already have a few hundred miles on them. I drove a Subaru Outback that had just been delivered once and the smell was so strong my wife got nauseous.
I can confirm this as well. Had an exhaust changed out recently on my Isuzu Trooper and it smelled pretty strongly for a few days till whatever was on the muffler burned off.
I've also noticed test driving that cars with almost no miles have a much stronger smell when the engine/exhaust heats up than those that already have a few hundred miles on them. I drove a Subaru Outback that had just been delivered once and the smell was so strong my wife got nauseous.
#39
Lexus Champion
I attended a Lexus event for new owners and one of the mechanics confirmed that you need to idle at least 20 seconds before turning the engine off. It's good that this issue was brought up during the orientation because i wasn't doing this when I got my F Sport last month. Also, the user manual mentions this as well.
#40
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I was reading through the owner's manual and found this info on p168. It recommends idle cool down as follows
Normal city driving: ~20 seconds
High speed driving (constant speed above 50mph (80km/h): ~1 minute
High speed driving (constant speed above 62mph (100km/h): ~2 minute
Steep hill driving or continuous driving above 62mph (100km/h): ~3 minute
Normal city driving: ~20 seconds
High speed driving (constant speed above 50mph (80km/h): ~1 minute
High speed driving (constant speed above 62mph (100km/h): ~2 minute
Steep hill driving or continuous driving above 62mph (100km/h): ~3 minute
When my turbo comes in May (4 1/2 months), I'll take a minute to let it spool down.. just a shade conservative, but that what happens when you're over 60 yrs old.
#42
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Find one interesting discrepancy between the online user manual downloaded from Lexus website and the hardcopy manual with the vehicle regarding the idle time.
e.g. On Page 168, the hardcopy says for normal city driving, idle time "not necessary. Online manual says "Approximately 20 seconds". Other cases are also different.
Which one should I follow? I am guessing the electronic one. Just want to confirm. But this turbo thing did drive me nuts. My colleagues are laughing at me every time I have to wait for the turbo to cool down. Thanks.
e.g. On Page 168, the hardcopy says for normal city driving, idle time "not necessary. Online manual says "Approximately 20 seconds". Other cases are also different.
Which one should I follow? I am guessing the electronic one. Just want to confirm. But this turbo thing did drive me nuts. My colleagues are laughing at me every time I have to wait for the turbo to cool down. Thanks.
#43
Interesting. The Canadian electronic manual has the same discrepancy. Funny enough, I just took delivery last month and never once was I told about the required cool down. Neither my salesman nor the delivery specialist even knew about it. Goes to show how well dealers really know their products nowadays.
#44
Pit Crew
I would think that if you are doing hard driving such as driving on hot days at freeway speeds or driving up mountain grades that a cool down period should be done. Short commutes around town maybe not so much. I always let the car idle for 20 seconds on startup and then about the same time before shutdown. But it's primarily my wife's car and she forgets....
#45
i have not let me engine cool down in about 2000 miles. Does BMW, Audi, and Mercedes require cool down? If this becomes a requirement I can see a lot of normal drivers opting for a non-turbo competitor (like an RDX)