20 minutes Idle bad for an engine? High rpms due to a missed gear, what are results? - Acura Forum

Morketh · 07-10-08, 05:08 PM

So I was with a girl and.. well my RSX-S was idle for say 20 minutes before I decided to turn the car off.. Just wondering if this is bad for the engine or what cause today I found myself taking a nap in my car on lunch due to a late night and its soo hot outside I had to run the A/C... so bottom line, an idle engine with A/C going, this bad? What does it do?

Also, missing a gear, I am still new with racing so I went from I think 3rd to 2nd or maybe if I went from 4th to 1st... and the rpms just skyrocket extremely fast, I slam the clutch back in.. what kind of effect does this have on the engine? Keep in mind this is very rare, it has happened 2 times, once by me and once by a friend who wasnt used to the car.

Slynky · 07-10-08, 07:57 PM

I wouldn't think idling the car would be a problem. As long as the temp stays steady I can't see a problem. BUT, normally, a car is moving and that helps bring more air to the radiator.

Missing a gear? You'd probably know if something was wrong by now but I'll let someone else step in here.

n0s_speed · 07-11-08, 01:45 AM

20minutes on idle shouldn't be that bad. i used to leave my car on for 10minutes. maybe a little longer. the only thing that you have to think about is what chuck said above. there's not much airflow going through the engine.

shifting like that shouldn't be a problem, either, as long as your car isn't chipped and you hit the clutch right away.

the rpm should skyrocket because you downshifted and that you hit v-tec much faster because the lower the gear you are in the more revolutions you make.

i said it's not a problem as long as your car is chipped because there is a cut-off switch on our car. whe your car hits the redline, somewhere around there you'll lose power. meaning, gas was being cut-off. if it's chipped, it takes that away and that the was is being over USED. hence, no redline.

back when i used to race on the freeways, i would downshift from 6gear-4th or depending on how fast i was already going, sometimes 3rd, for faster take-off.

giken · 07-11-08, 07:43 AM

Doesn't matter if your car is "chipped" or not. If you downshift, the engine is going to match whatever rpm it is suppose to be. If it's suppose to be at 10,000, then that's where it's going to go and your engine is toast. I've gone from 6th to 3rd before and caught it before it reached past the red line. If you are sure you caught it before the revs got up too high, you should be fine. If you are unsure, only thing you can possibly do is a leak down test and a compression test. The rev limit only works if you accelerate and will not let you go past 8200/8400. Downshifting will let you go past that.

Morketh · 07-11-08, 10:10 AM

Quote:

Originally Posted by giken

Doesn't matter if your car is "chipped" or not. If you downshift, the engine is going to match whatever rpm it is suppose to be. If it's suppose to be at 10,000, then that's where it's going to go and your engine is toast. I've gone from 6th to 3rd before and caught it before it reached past the red line. If you are sure you caught it before the revs got up too high, you should be fine. If you are unsure, only thing you can possibly do is a leak down test and a compression test. The rev limit only works if you accelerate and will not let you go past 8200/8400. Downshifting will let you go past that.

ewwwww, thats nasty!! Well I just hope nothing is wrong, everything seems to be okay. Thanks for all your help.

**TireMeltingRSX** · 07-11-08, 11:57 AM

Willie, you're completely wrong.

As Giken said misshifting can cause major problems because it can rev your engine way past it's limits. If it feels fine you might be fine, but a compression test never hurts.

Take it easy until you can shift without thinking and hit your gear every time.

sidenote: I don't know what happened between my 1st and 2nd rsx, but every time I downshift now I revmatch with scary accuracy

*C25A1guy* · 07-11-08, 01:37 PM

Idling won't hurt the car. You're just burning that $4.75+/gal gas is all. As far as a mis-shifted over-rev, that can bring some serious damage to the engine. To prevent this, read this post:
driving techniques

**TireMeltingRSX** · 07-11-08, 02:03 PM

your pictures are

Dean.

*C25A1guy* · 07-11-08, 02:30 PM

yea, I know. I couldn't hotlink from UUC's website. I have the link in the post though.

07-10-08, 05:08 PM	#1 (permalink)
Morketh Registered User Join Date: Jun 2008 Location: Lake Jackson, TX Age: 23 Posts: 87 Car 1: 2001 Mustang Bullitt Car 2: 2000 Kia Sportage Car 3: 2004 Acura RSX Type S	20 minutes Idle bad for an engine? High rpms due to a missed gear, what are results? So I was with a girl and.. well my RSX-S was idle for say 20 minutes before I decided to turn the car off.. Just wondering if this is bad for the engine or what cause today I found myself taking a nap in my car on lunch due to a late night and its soo hot outside I had to run the A/C... so bottom line, an idle engine with A/C going, this bad? What does it do? Also, missing a gear, I am still new with racing so I went from I think 3rd to 2nd or maybe if I went from 4th to 1st... and the rpms just skyrocket extremely fast, I slam the clutch back in.. what kind of effect does this have on the engine? Keep in mind this is very rare, it has happened 2 times, once by me and once by a friend who wasnt used to the car.

07-10-08, 07:57 PM	#2 (permalink)
Slynky AW resident 'old fart' Join Date: Dec 2005 Location: McDonough, GA Age: 57 Posts: 9,793 Your Mood: Car 1: '06 RSX-S Car 2: '06 RSX (wife's) Car 3: '89 CRX (sold)	I wouldn't think idling the car would be a problem. As long as the temp stays steady I can't see a problem. BUT, normally, a car is moving and that helps bring more air to the radiator. Missing a gear? You'd probably know if something was wrong by now but I'll let someone else step in here. __________________ *Appearance* Mods: G2 (red) caliper paint; 20%/32% charcoal window-tint; Acura A-spec front/side/rear body-kit; A-spec high wing; 5-Zigen FN01R-C Gloss Black (17X7) wheels; JDM rear wiper plug *Performance* Mods: Injen CAI; Eibach Pro Kit springs; Progress f/r anti-sway bars _____________________________________________ Acquaintance, n. A person whom we know well enough to borrow from, but not well enough to lend to. A degree of friendship called slight when its object is poor or obscure, and intimate when he is rich or famous. (Ambrose Bierce)

07-11-08, 01:45 AM	#3 (permalink)
n0s_speed -=M2V4P=- Join Date: Apr 2005 Location: LA Age: 25 Posts: 14,125 Your Mood: Car 1: 05 Acura RSX-S Car 2: 06 Yamaha R6- traded in Car 3: 07 Honda CBR1000RR	20minutes on idle shouldn't be that bad. i used to leave my car on for 10minutes. maybe a little longer. the only thing that you have to think about is what chuck said above. there's not much airflow going through the engine. shifting like that shouldn't be a problem, either, as long as your car isn't chipped and you hit the clutch right away. the rpm should skyrocket because you downshifted and that you hit v-tec much faster because the lower the gear you are in the more revolutions you make. i said it's not a problem as long as your car is chipped because there is a cut-off switch on our car. whe your car hits the redline, somewhere around there you'll lose power. meaning, gas was being cut-off. if it's chipped, it takes that away and that the was is being over USED. hence, no redline. back when i used to race on the freeways, i would downshift from 6gear-4th or depending on how fast i was already going, sometimes 3rd, for faster take-off. __________________ RSX-S 2005 Honda CBR1000RR 2007 RED/BLACK Current Upgrade - Proton Front Signal Lights - Competition Works Fender Eliminator - ProGrip Tank Protector - Shogun Frame Slider - StompGrip Tank Pad - Jardine D/O S/O - Puig Darksmoke Windscreen - SpeedoHealer

07-11-08, 07:43 AM	#4 (permalink)
giken Car is For Sale!! Join Date: Jun 2006 Location: Atlanta, GA Age: 35 Posts: 663 Your Mood: Car 1: 2002 RSX-s Car 2: 2007 Pacifica(wifey) Car 3: 2008 Chevy Van(work)	Doesn't matter if your car is "chipped" or not. If you downshift, the engine is going to match whatever rpm it is suppose to be. If it's suppose to be at 10,000, then that's where it's going to go and your engine is toast. I've gone from 6th to 3rd before and caught it before it reached past the red line. If you are sure you caught it before the revs got up too high, you should be fine. If you are unsure, only thing you can possibly do is a leak down test and a compression test. The rev limit only works if you accelerate and will not let you go past 8200/8400. Downshifting will let you go past that. __________________ 02 RSX type S Exterior: DIY headlights, OEM Carbon Fiber Hood, Carbon Fiber Mugen replica front bumper, Carbon Fiber Mugen sides, Carbon Fiber Type R rear lip, 9500k HID, JDM sidemarkers, 18" gunmetal Radius wheels, JDM Honda emblems, rear wiper plug. Interior: JDM push button starter, Mugen pedals with ITR dead pedal, Mugen shift knob, red stitched shift boot, red sparco door inserts, dual guage pillar pod, autometer guages. Performance: ITR cams, ITR intake manifold, comptech catback exhaust, AEM CAI, Hondata Kpro, tanabe S-OC coilovers.

07-11-08, 11:57 AM	#6 (permalink)
TireMeltingRSX AW's Resident Smartass Join Date: Jun 2005 Location: Chicago, IL Age: 27 Posts: 28,658 Your Mood: Car 1: 2006 VBP RSX Type S Car 2: 2005 NBP RSX Type S SOLD	Willie, you're completely wrong. As Giken said misshifting can cause major problems because it can rev your engine way past it's limits. If it feels fine you might be fine, but a compression test never hurts. Take it easy until you can shift without thinking and hit your gear every time. sidenote: I don't know what happened between my 1st and 2nd rsx, but every time I downshift now I revmatch with scary accuracy __________________ 2006 VBP RSX Type S

Remove Advertisements Sponsored Links
Acura Forum - Acura World.com Advertisement

07-11-08, 01:37 PM	#7 (permalink)
C25A1guy The Mongolian Join Date: Dec 2002 Location: Chan Marino, CA Age: 24 Posts: 6,342 Your Mood: Car 1: 2002 RSX Car 2: 2007 Honda Ridgeline Car 3: 2005 Honda Civic	Idling won't hurt the car. You're just burning that $4.75+/gal gas is all. As far as a mis-shifted over-rev, that can bring some serious damage to the engine. To prevent this, read this post: driving techniques __________________ Click here to see my gallery! Thanks To my sponsors and affaliets: M1 Autobody, ICB Motorsports, Honsport, Hondata, E Auto Parts, New Century Auto, APR Performance, Toyo Tires, Buddy Club USA, Torco Racing Oils, GenX Graphics

07-11-08, 02:03 PM	#8 (permalink)
TireMeltingRSX AW's Resident Smartass Join Date: Jun 2005 Location: Chicago, IL Age: 27 Posts: 28,658 Your Mood: Car 1: 2006 VBP RSX Type S Car 2: 2005 NBP RSX Type S SOLD	your pictures are Dean. __________________ 2006 VBP RSX Type S

07-11-08, 02:30 PM	#9 (permalink)
C25A1guy The Mongolian Join Date: Dec 2002 Location: Chan Marino, CA Age: 24 Posts: 6,342 Your Mood: Car 1: 2002 RSX Car 2: 2007 Honda Ridgeline Car 3: 2005 Honda Civic	yea, I know. I couldn't hotlink from UUC's website. I have the link in the post though. __________________ Click here to see my gallery! Thanks To my sponsors and affaliets: M1 Autobody, ICB Motorsports, Honsport, Hondata, E Auto Parts, New Century Auto, APR Performance, Toyo Tires, Buddy Club USA, Torco Racing Oils, GenX Graphics

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode