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Who waits for the RPMs to settle before ...? #5387245 03/27/20 06:45 PM
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TXCarGeek Offline OP
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I'm unsure what prompted me to do this, but do any of y'all wait for the RPMs to settle after a cold start before shifting into gear?

What's the precise reason for the higher revs to begin with? And is it at all beneficial to allow the engine to settle down like I have a tendency of doing?

Re: Who waits for the RPMs to settle before ...? [Re: TXCarGeek] #5387254 03/27/20 06:55 PM
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ammolab Offline
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Higher revs are to prevent a cold engine from stalling. Most new cars slow the revs pretty quickly.
I don’t wait.


1998 Jeep Cherokee
2011 BMW R1200R
2005 Kaw Ninja 250
1994 Jeep Wrangler 2.5L
2016 Chevy SS Sport Sedan
Re: Who waits for the RPMs to settle before ...? [Re: TXCarGeek] #5387255 03/27/20 06:55 PM
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Rand Offline
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start car let run for 15-20s, back out of garage, sit there 15-30s while I wait on traffic, adjust radio etc.. drive away with light throttle.


2019 Jeep Cherokee Trailhawk 2.0T
2020 Hyundai Elantra "Value Edition"
Re: Who waits for the RPMs to settle before ...? [Re: TXCarGeek] #5387260 03/27/20 06:58 PM
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2010Civic Offline
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With a manual transmission I don't mind as much taking off with the revs up.


2010 Honda Civic LX
Valvoline SynPower 5w-20 - Napa Gold oil filter
59,992 miles
Re: Who waits for the RPMs to settle before ...? [Re: 2010Civic] #5387266 03/27/20 07:00 PM
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TXCarGeek Offline OP
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Originally Posted by 2010Civic
With a manual transmission I don't mind as much taking off with the revs up.


The only manual vehicle in my stable, a '99 Wrangler with the 4.0, it settles down to normal idle speed basically immediately.

Re: Who waits for the RPMs to settle before ...? [Re: TXCarGeek] #5387267 03/27/20 07:01 PM
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TheLawnRanger Offline
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I wait. I think it was beneficial years ago but not as much now. My vehicles seem to run better if I wait but that may just be me.


2011 Impala
2012 Colorado
Oil: 5w30 synthetic
Filters: Wix 51522 for both
Re: Who waits for the RPMs to settle before ...? [Re: Rand] #5387268 03/27/20 07:01 PM
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Originally Posted by Rand
start car let run for 15-20s, back out of garage, sit there 15-30s while I wait on traffic, adjust radio etc.. drive away with light throttle.


Light throttle keeping it under 2000-2500 RPM ...I do the same thing at first.

Re: Who waits for the RPMs to settle before ...? [Re: TheLawnRanger] #5387270 03/27/20 07:02 PM
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TXCarGeek Offline OP
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Originally Posted by TheLawnRanger
I wait. I think it was beneficial years ago but not as much now. My vehicles seem to run better if I wait but that may just be me.


Out of all my vehicles, my '08 550i is the one that takes the longest to settle down...about 10-15 seconds. I'm on my way as soon as the RPMs drop.

Re: Who waits for the RPMs to settle before ...? [Re: TXCarGeek] #5387272 03/27/20 07:03 PM
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Wolf359 Offline
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I usually start it up, put on seat belt, adjust audio system, set up navigation and then by that time the revs have dropped. I believe part of the reason for the higher revs is for emissions related purposes, gets out of the cold loop sooner. Transmission also tends to clunk when you put in it gear when it's revving up so it's just smoother to wait a couple seconds for it to drop.

Re: Who waits for the RPMs to settle before ...? [Re: TXCarGeek] #5387309 03/27/20 07:37 PM
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supton Offline
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Lately I have not been. I've never been one to let it idle for long, only if it had problems running (back in the carb days). I haven't noticed it clunk very much either, despite high rev's, maybe the transmission hasn't really pumped up yet if I'm fast enough.


2011 Toyota Camry, base, 2.5L/6MT, 205k, hers
2010 Toyota Tundra DC, 4.6L/6AT, 159k, ours
1999 Toyota Camry LE, 2.2L/4AT, 225k, his
Re: Who waits for the RPMs to settle before ...? [Re: TXCarGeek] #5387317 03/27/20 07:45 PM
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andyd Offline
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The Rat goes from cold been sitting for 2 wks to 1500 rpm. The push rods make a racket. It isnt so bad now I run around in low range only with the hubs unlocked. But I would have to wait until the idle dropped to 700 RPM to take off when going out of the yard. Camrys just start and go except when clearing snow. By the time I've defrosted a car, I can take off my jacket and drive in my shirtsleeves grin2


'16 Camry LE STP synth 0w20 and STP filter. the Fridge

1994 Ranger ,the Rat, 5w30 dino, STP filter

'16 Camry SE, Valvoline HM 0w20 and OEM filter
Thick oil is better grin2
Re: Who waits for the RPMs to settle before ...? [Re: TXCarGeek] #5387327 03/27/20 07:51 PM
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92saturnsl2 Offline
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Pretty sure all my cars take 10-15 seconds to settle down to a normal idle after being started. I make a conscious effort to avoid shifting until RPM is at 1000 or less, but often times I don't wait if I'm in a hurry.


96 Grand Prix SE (project car)
04 Odyssey EX 205k Shell Rotella T5 10w-30
96 Maxima GLE 275k Mobil Super HM 5w-30
07 Chrysler Pacifica Limited 4.0L 151k Mobil1 EP 0w-20
Re: Who waits for the RPMs to settle before ...? [Re: TXCarGeek] #5387328 03/27/20 07:52 PM
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Leo99 Offline
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Originally Posted by TXCarGeek
I'm unsure what prompted me to do this, but do any of y'all wait for the RPMs to settle after a cold start before shifting into gear?

What's the precise reason for the higher revs to begin with? And is it at all beneficial to allow the engine to settle down like I have a tendency of doing?


Curious how old you are? Carburetored engines would close the choke and run very rich with high rpms until the engine warmed up. Back in the day, we might wait a little bit for the engine to warm up and we'd blip and gas pedal and get the rpms to settle down. Engines could be a little finicky when cold. Today computers control all that and I just get in and go.


Without data you're just another person with an opinion. W. E. Deming


2004 Corolla 125,000 miles
2004 Rav4 399,852 miles (RIP)
2015 Camry 101,000 miles
2020 Rav4 6,000 miles
Re: Who waits for the RPMs to settle before ...? [Re: TXCarGeek] #5387335 03/27/20 07:58 PM
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ArPix Offline
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It depends on how the vehicle reacts when you shift it into gear. My previous VW Rabbit with a 6 speed automatic would slam into gear somewhat if I didn’t let the RPMs slow down first. But my current GTI engages gently with its 7 speed DSG. I don’t have any evidence that the Rabbit was harmed in any way by not waiting ( I didn’t always wait) because it was working fine when I sold it with 50K miles when I bought the GTI.

Re: Who waits for the RPMs to settle before ...? [Re: 2010Civic] #5387344 03/27/20 08:09 PM
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aquariuscsm Offline
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Originally Posted by 2010Civic
With a manual transmission I don't mind as much taking off with the revs up.


^^This.

But with an automatic,I don't like feeling the jolt when you shift in into D or R while the freshly started engine is revving high.


1996 Nissan 300ZX 5-speed,Arctic Pearl(#175 of 300)
Quaker State Ultimate Durability 10W30
2012 Honda Accord Coupe EX-L 2.4,auto,San Marino Red
Pennzoil Platinum High Mileage 10W30

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