My engine shakes when i hit redline.....Video - Toyota Nation Forum : Toyota Car and Truck Forums

BlackCamSe · 07-10-2006, 10:04 AM

Is it suposto shake like this? Or is it just doint that because the rev limitor is kicking in?

http://www.youtube.com/v/XRpOXiJB-Ks

thousand_five · 07-10-2006, 10:46 AM

I think it is the rev limiter. Make sure your car is up to temperature when redlining.

BlackCamSe · 07-10-2006, 10:54 AM

Quote:

Originally Posted by thousand_five

Make sure your car is up to temperature when redlining.

i always check that it has ben runibg for atleast 10 minuts b4 redlineing.

drunken_panda · 07-10-2006, 11:10 AM

kind of a bad video, but it could be the rev limiter.

TRDGen5.5camry · 07-10-2006, 12:29 PM

it the rev limiter i think the max you can go is 5500rpm don't remember

BlackCamSe · 07-10-2006, 03:17 PM

i thaught thats what it was. thanks for the help.

desi_prodigy · 07-10-2006, 03:19 PM

its not really the rev limiter,,my car when im ripping it,,everytime it redlines the car slightly shakes for about 2 secouinds

dont worry its not a big problem as long as ur not experiencing any loss of power when that happenz

Rick@CTCorvette · 07-10-2006, 03:21 PM

Try not to bounce it off the rev limiter too much. It's there for a reason.

JetspeedCamry · 07-10-2006, 04:31 PM

Quote:

Originally Posted by desi_prodigy

its not really the rev limiter,,my car when im ripping it,,everytime it redlines the car slightly shakes for about 2 secouinds

dont worry its not a big problem as long as ur not experiencing any loss of power when that happenz

Haha..and if it was experiencing a "loss of power" what would it be eintstein?

You'll find it is your rev limiter. Rev limters work in all different ways, but the Camry uses an ignition cut to stop the engine from rotating any faster and building more rpm's. Because of this, for that instant, your motor is actually running oin 3 or less cylinders (depending on how harsh the limit its). Thus, it will vibrate/shake/run rough. Its designed to do that though. The loss of ignition in one or more of the cylinders stops the motor from making any more power, and therefore will just sit there at that RPM....shaking away haha. If your motor is built properly (nice and strong) then you can happily hold it there all day long, but on a stock motor, its probobly not the best.

BlackCamSe · 07-10-2006, 06:43 PM

Quote:

Originally Posted by JetspeedCamry

Haha..and if it was experiencing a "loss of power" what would it be eintstein?

You'll find it is your rev limiter. Rev limters work in all different ways, but the Camry uses an ignition cut to stop the engine from rotating any faster and building more rpm's. Because of this, for that instant, your motor is actually running oin 3 or less cylinders (depending on how harsh the limit its). Thus, it will vibrate/shake/run rough. Its designed to do that though. The loss of ignition in one or more of the cylinders stops the motor from making any more power, and therefore will just sit there at that RPM....shaking away haha. If your motor is built properly (nice and strong) then you can happily hold it there all day long, but on a stock motor, its probobly not the best.

so thats like reving it with one of the sparkplugs unpluged?

and what do you mean depending on how harsh the limit is?

JetspeedCamry · 07-10-2006, 08:24 PM

Yeah basically...not REMOVING a spark plug (LOL...compression leak anyone?? :P)..but yea..taking a spark wire off..having the car run on 3 or so cylinders.

Rev limiting comes in different forms...some are harsher. A soft form of limiting is to fuel cut..where the motor runs out of puff, can't make anymore power, you dont feel the limit as roughness, but more a drop in power. A harsher limit would be ignition cut, and depending on how many cylinders are cut, makes it harsher. Usually its just 1, but some cars (higher performance cars) sometimes take 2 or 3, so that the motor CAN"T make anymore power, and thus not rev anymore.

BlackCamSe · 07-10-2006, 09:45 PM

thats pretty weird. cant that damage the cylinder? I mean it would be pretty hard on the rods and crank having to pull the piston back down because normally the compression will push the piston back down.

min150mph · 07-10-2006, 10:30 PM

Sounds like a good reason to not redline it, doesn't it?

JetspeedCamry · 07-10-2006, 11:15 PM

Quote:

Originally Posted by Camralon2343

thats pretty weird. cant that damage the cylinder? I mean it would be pretty hard on the rods and crank having to pull the piston back down because normally the compression will push the piston back down.

Mm..in a way. Theres still compression there...because the cylinder is still sealed...and the other cylinders/crank momentum is pushing the piston back up again (creating compression again)...however, there is no "power" in the cylinder..so the engine will not have enough to increase in RPM (as you can see with some cars, the RPM's actually drop a few hundred or so when it "bounces"). What it will do, is cause the cylinder to run rich. Causing black smoke to spit out of the exhaust.

islandboy57 · 07-11-2006, 04:40 AM

Are you trying to kill your car? Ha ha nah.. But anyway, I've never experienced the rev limiter kicking in and just the other night I was at 6000 RPM trying to merge onto the freeway - yeah, you should see how short our on-ramps are here in Hawaii

. I need my car to last me a good while so I don't think I'll try redlining it for fun. Heh.