accidentally revved up while cold

[Big_Cuss]

It was about 45F this morning outside, though likely 55F in my garage, when I left for work. About 2 mins into my drive, with my coolant gauge about halfway up, I had to change lanes and accelerate pretty quickly and the truck downshifted from what I think was 3rd to first. This made the car rev up under load from about 3k to 5k before it upshifted to 2nd gear.

My first worry was revving like that while still sorta cold. Now obviously my coolant was warming so oil was flowing, so think I'd be ok, but just wanted folks thoughts here. I thought I read somewhere that modern engines pull a lot of timing because the exhaust gas tumble of nonvvti actually helps the car warm up the cats and internals faster, before it feeds timing advance back in once warm. But coulda misread.

My second worry was how unrefined the 1GR-FE feels while at that half-warmed stage. It vibrated more than when warmed up, and sounded a bit louder too. Anyone know if that's likely just the car pulling timing while cold to protect itself better, mixed with cold exhaust noises vs a warm, mellow exhaust? Or do I need to be pretty concerned?

Last - anyone else do this accidentally or intentionally? Was it a nonissue for yall lile I hope?

Thanks!

 

[Bayou_Pro]

You're being way to concerned about nothing. I wouldn't make a habit out of it but it's just fine. It's a Toyota, it'll take a lot more then that to hurt it.

 

[Signess]

Nothing to worry about. Best to not redline it before its completely warm, but here and there you won't hurt a thing, especially if it is broken in.
Don't forget that just because your coolant is up to temp does not mean your oil is. Count on oil taking another 10 min. to get up to operating temp after your coolant reaches center.

 

[Big_Cuss]

Nothing to worry about. Best to not redline it before its completely warm, but here and there you won't hurt a thing, especially if it is broken in.
Don't forget that just because your coolant is up to temp does not mean your oil is. Count on oil taking another 10 min. to get up to operating temp after your coolant reaches center.

Crap. YEs you're right - forgot about that. At least we have an oil/coolant heat exchanger for emissions to help with that a bit. i used to log my sports car in ecutune for flash/tuning purposes, and was surprised at some of the ways these things play out in the first few mins.

Good news is a Cali winter morning is pretty mild. I'll also hope Toyota built some cold engine timing protection in for when I forget I'm not driving a sportscar.

PS- might be a reason to get a sprint booster. if the throttle opened more at first I might not have felt compelled to overstomp the gas when my car sped up too slow and traffic behind me beared down on me.

 

[mrblah]

your car is going to explode

 

[macorti]

In fact there are some owner guides that indicate that in case your are in a very cold place you have to start the car with the gas pedal pushed, not until the bottom, but a little bit. I saw that indication on a 1990 Nissan Patrol owner guide, ao if that is not going no affect an old engine, nothing is going to happen to a newer engine like yours. That’s my humble opinion.

 

[BaddaBing]

You can’t be serious.

 

[Redsoxx1918]

It was about 45F this morning outside, though likely 55F in my garage, when I left for work. About 2 mins into my drive, with my coolant gauge about halfway up, I had to change lanes and accelerate pretty quickly and the truck downshifted from what I think was 3rd to first. This made the car rev up under load from about 3k to 5k before it upshifted to 2nd gear.

My first worry was revving like that while still sorta cold. Now obviously my coolant was warming so oil was flowing, so think I'd be ok, but just wanted folks thoughts here. I thought I read somewhere that modern engines pull a lot of timing because the exhaust gas tumble of nonvvti actually helps the car warm up the cats and internals faster, before it feeds timing advance back in once warm. But coulda misread.

My second worry was how unrefined the 1GR-FE feels while at that half-warmed stage. It vibrated more than when warmed up, and sounded a bit louder too. Anyone know if that's likely just the car pulling timing while cold to protect itself better, mixed with cold exhaust noises vs a warm, mellow exhaust? Or do I need to be pretty concerned?

Last - anyone else do this accidentally or intentionally? Was it a nonissue for yall lile I hope?

Thanks!

First of all.....45 isn’t cold. Maybe where you’re from it’s cold but in terms of your automobile.....not even close. 45 is a balmy spring day.

And a sprint booster would definitely help. One thing I hated was trying to accelerate around someone on an incline. Give it some gas and all you get is a delay, no downshift and feeble acceleration. Eventually you have to basically floor it and then it goes WOT and you’re redlining it for a simple passing procedure. With the sprint booster, a little bit of gas and I get an instant throttle response, downshift and acceleration. There’s no delay and I don’t have to end up redlining.


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[Horsethief]

Part out!

 

[Mantilgh]

I spun a bearing on an older Dodge one morning. It was a beater delivery truck I borrowed from work.

Probably less than 2 miles from my house I have pretty blind intersection that’s up hill. Started to pull out then noticed someone coming so I got on it. It just spun out and reved. Then it didn’t sound right.

Luckily they didn’t seem to care and didn’t give me any flack for it.

If it’s not making any strange sounds, I wouldn’t worry about it.


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[Knuckledragger]

You’re lucky. I drive my 4Runner all winter here in Minnesota. Lowest temp I saw this year was -28F. Now that is cold. My girlfriend drives an 01 4Runner and often hits the road without warming up her 4Runner when temps are below zero. She’s at 250k and still running strong.

 

[QwikKotaTx]

The vibration and rough sound is probably just from the engine having to fight the thick oil.

 

[BigTony]

Aww what a shame. You should definitely cut bait on that 4runner before she blows. Give me a call and I'll take it off your hands


JK - I am also a little OCD and kick myself over this kind of thing, but you're fine.

One thing I notice on the 4runner (new for me) is I think this thing must have a mechanical fan, and I haven't had a car with a mechanical fan for a while. I notice this being engaged when starting cold, and this adds some noise/resistance/vibration compared to my other cars.

 

[BobsTrail]

if the throttle opened more at first I might not have felt compelled to overstomp the gas when my car sped up too slow

In Drive our T4 hesitates before doing a downshift. I run mine in S5 all the time. It helps it downshift more quickly without the lag.

 

[shrub1]

Man...really?

 

[Mack1611]

It's shot.... time to trade it in.

 

[Redsoxx1918]

In Drive our T4 hesitates before doing a downshift. I run mine in S5 all the time. It helps it downshift more quickly without the lag.

Get a sprint booster. Instant response and downshift with no lag.


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[MossJenks]

Yeah, it's toast. Not really worth anything but scrap value now - PM me, I'd be happy to give you double scrap value for it. I'd use it for.......er....parts - yeah, parts!

 

[nimby]

ur trucks fvcked

 

[mikeromeo1968]

You're being way to concerned about nothing. I wouldn't make a habit out of it but it's just fine. It's a Toyota, it'll take a lot more then that to hurt it.

i know. i had to reread the post to make sure it didnt say -45f.