Delayed launch when flooring the gas pedal??
#33
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TRDCorolla, was the engine warmed up? I know sometimes when I first crank mine, I allow the engine to warm up(3-4 mins) before I WOT or it does the lag thing like you mentioned.
The freeway is a mile from my house and I sometimes have the lag at WOT when merging onto the interstate. I've learned to let the engine get up to temp before I attempt any hard passing.
The freeway is a mile from my house and I sometimes have the lag at WOT when merging onto the interstate. I've learned to let the engine get up to temp before I attempt any hard passing.
#35
Lead Lap
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Yeah it was warmed up plenty. I was alreay driving on the freeway for a good 20 minutes already. I was just merging onto the 15 from the 60 freeway.
Just got an update:
I got off the phone with a friend of mine and I told him about problem. He said that it was nothing to worry about if everyone else is exeriencing this too.
This guy has a Camry and it does the same thing. From what he told me, the factory installed a feature where there is a moment delay from regular cruising to WOT. This is mainly a safety precaution so it won't damage the axles or strain the transmission by jumping gears too quickly. It's computer sensing too and sort of like a type of VSC so to speak.
Does this make sense to you guys? I hope he's right. I'll talk to the dealer next time I bring it in. I'm due soon for oil change.
Just got an update:
I got off the phone with a friend of mine and I told him about problem. He said that it was nothing to worry about if everyone else is exeriencing this too.
This guy has a Camry and it does the same thing. From what he told me, the factory installed a feature where there is a moment delay from regular cruising to WOT. This is mainly a safety precaution so it won't damage the axles or strain the transmission by jumping gears too quickly. It's computer sensing too and sort of like a type of VSC so to speak.
Does this make sense to you guys? I hope he's right. I'll talk to the dealer next time I bring it in. I'm due soon for oil change.
Last edited by LexusIS-TL; 07-06-07 at 08:37 AM.
#36
Lexus Test Driver
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I'm pretty sure this has nothing to do with the drive-by-wire system. That's really the way throttle control probably should be.
The transmission is your problem. Put it in ECT PWR mode or S-mode, and you should get an immediate response. I think you're overestimating the delay, though. Even when you're not in PWR mode, it is definitely NOT a "3-5 second" delay.
The transmission is your problem. Put it in ECT PWR mode or S-mode, and you should get an immediate response. I think you're overestimating the delay, though. Even when you're not in PWR mode, it is definitely NOT a "3-5 second" delay.
Last edited by RocketGuy3; 07-06-07 at 09:30 AM.
#38
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I've had an issue similar to this when pulling out of an intersection. I saw a gap, and knew I could fit in. What I didn't expect is that my traction control would could the power to the wheels, creating a very innerving lag.
I've found that if I give the peddle a slight tap before I nail it, I get better acceleration. Perhaps its just the fact that the wheels are spinning before I gun it. Also, I drive in power mode all the time, and the reaction time seems a lot quicker.
I've found that if I give the peddle a slight tap before I nail it, I get better acceleration. Perhaps its just the fact that the wheels are spinning before I gun it. Also, I drive in power mode all the time, and the reaction time seems a lot quicker.
#39
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What's up with that? Today as I was trying to get to the left lane (right lane was coming to an end and I had to merge left on freeway traffic) and I saw a clearing up ahead. I needed power to get me up there since I was rolling at around 30mph. I stomped on the gas pedal and what the crap? There was like a 3-5 seconds delay in power transfer!!!!!! Once I finally got going, it was smoking fast--but what's the deal with the delay? Hope nothing is wrong with the drive by wire throttle, tranny, etc.
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the computer sense all the "driving conditions" before it send the "signal" to the throttle.....that's why they got a 1-2 sec delay.....
#40
Lexus Fanatic
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Dont know about all this lag ppl are talking about, kinda like 'the rattles', i feel so left out
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*edit* maybe your talking about trans lag, trans tries to figure out what gear to drop too... Dont know about throttle lag thou...
#41
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I've got it also. It's only about 1/2 second though, but seems like eternity when going to pass. Almost like turbo lag, but man, does it kick in when it goes!
Cheers,
Old Oiler
Cheers,
Old Oiler
#42
Lead Lap
Thread Starter
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^^^yeah, tell me about it!!! That's exactly what happened to me when I stomped on it. After the initial delay (where I almost got killed), it was like KITT in Super Pursuit Mode.
#44
Tech Info Resource
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It never ceases to amaze me how many people would like to blame drive-by-wire. Sorry. No way.
Here's one for you, and everyone who's had a bike with smoothbores or flatslides knows exactly what I'm talking about. If you have a large throttlebody and you have a direct link, what happens when you stand on it from low rpm? IT STALLS. So, don't you think Toyco figured out a way to put a bigger throttlebody on the engine and control it with the computer in a way to maintain velocity in the intake to actually IMPROVE response and let the engine make more power because the throttlebody is already bigger than anything you could directly connect a cable to?
Anybody else here driven something with an oversize throttlebody and had driveability problems that just wouldn't tune out (and they never will)?
As RocketGuy3 said - it has nothing to do with the throttle, and everything to do with the transmission.
Here's one for you, and everyone who's had a bike with smoothbores or flatslides knows exactly what I'm talking about. If you have a large throttlebody and you have a direct link, what happens when you stand on it from low rpm? IT STALLS. So, don't you think Toyco figured out a way to put a bigger throttlebody on the engine and control it with the computer in a way to maintain velocity in the intake to actually IMPROVE response and let the engine make more power because the throttlebody is already bigger than anything you could directly connect a cable to?
Anybody else here driven something with an oversize throttlebody and had driveability problems that just wouldn't tune out (and they never will)?
As RocketGuy3 said - it has nothing to do with the throttle, and everything to do with the transmission.