2003 LS430 - Fuel Smell on Cold Start in Cold Temps
#1
Lead Lap
Thread Starter
2003 LS430 - Fuel Smell on Cold Start in Cold Temps
Hello,
We have been having prolonged periods of very cold temperatures in Quebec. I notice that when I start the car there is a strong, almost overpowering smell of unburned fuel coming from the tailpipe.
There are no error codes and the car drives without any issues. I know it takes a rich mixture to start a car in cold weather. However it seems quite strong compared to other cars that we've had.
Is this normal behavior? Can anyone else who owns an LS430 chime in and let me know if you've experienced the same thing.
If it's normal, no problem. However if it's not, what do you think may be the problem? I would like to avoid expensive repairs if possible.
Thanks.
We have been having prolonged periods of very cold temperatures in Quebec. I notice that when I start the car there is a strong, almost overpowering smell of unburned fuel coming from the tailpipe.
There are no error codes and the car drives without any issues. I know it takes a rich mixture to start a car in cold weather. However it seems quite strong compared to other cars that we've had.
Is this normal behavior? Can anyone else who owns an LS430 chime in and let me know if you've experienced the same thing.
If it's normal, no problem. However if it's not, what do you think may be the problem? I would like to avoid expensive repairs if possible.
Thanks.
#2
Lexus Fanatic
iTrader: (1)
Condensation in the exhaust can cause the car to run rich while it is warming up. This is normal and happens when it is pretty cold. I think you should monitor it. These cars are pretty good at telling you something is amiss. If the 02 sensors were wacky it would let you know.
#3
Lead Lap
Thread Starter
Condensation in the exhaust can cause the car to run rich while it is warming up. This is normal and happens when it is pretty cold. I think you should monitor it. These cars are pretty good at telling you something is amiss. If the 02 sensors were wacky it would let you know.
#4
I started mine up at 16 below this am and had a burnt smell out of the vents. Very faint and short lasting. She squeeled this am for a few more seconds than normal. Hate to put er thru the ringer at 16 below but I gotta work.
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#8
Lead Lap
Thread Starter
Was -28 C (-18F) last Thursday in Montreal. This was extreme for us but we have had prolonged periods of -15 to -20 C (5 to -4 F) in December. Car starts like a champ just smells like gas when first started. Only outside though never in the car.
#9
Lexus Test Driver
This condition is NORMAL. We had even -35C winter days in moscow couple of years ago.
Computer senses, that conditions are hard, and enriches the initial mixture to achieve stable ignition.
Computer senses, that conditions are hard, and enriches the initial mixture to achieve stable ignition.
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