Ok I've made another mistake last night. Was driving on the highway slowly at ~45mph when i step on the gas slightly and noticed that speed didn't increase but my tach jumped readily from 3-4.5k rpm. I looked for the OD off light but it wasn't there so I figured may be I'm in second gear and need to switch to D. This is where I made the mistake of moving the stick Down instead of Up, partially cause my gf was leaning over it. So when I switched to 1st the car was moving at ~30mp and the whole car jerked and tach meter went all the way to the right and car stalled as I try to pull into breakdown lane. I started the car again in Park and it took some cranking for the engine to turn. So my question is has this happen to anyone with stalling of the engine and mistake of downshifting from too high of speed?

 

going to such high rpm's puts a huge amount of stress on the engine. How long were you in that rpm range?

 

dont hit the unlock button (the one on the shifter) when you are upshifting. It will pop all the way up to nuetral without needing to touch it. Just a hint. Either that or pay more attention while driving.

 

I was in the high end of the rpm range for like 2-3 seconds because after that the engine stalled...either the rev limiter kicked in or I could've possibly partially flooded the engine some since it took some cranking to turn the engine over. God I was scared mostly for my tranny and not the engine. Took it out for some spirited runs today and both the engine and transmission seem to be responding ok. Thanks party_boy for the tip on the shifter button....yeah I was down shifting this time instead of upshift...kinda yard to concentrate when my gf is leaning over the stick. Well all I know is I've taken serveral thousand miles out of my transmission's life in one shot

 

I wouldn't worry about it. Your first gear should last for longer than 30 MPH. I drove an auto Max once and it downshifted to 1st gear when I floored it going 35(nice).

 

umm.. dont mind me askin but why was she leaning over the stick?

 

hahaha

 

really? how long did it last cause I would think u'd be bouncing off the rev limiter at that speed in that gear. Hopefully like you said 1st gear is strong enough for that speed.

Nismo : she was leaning over for better access...no way I'm gonna let that happen again while driving...learn my lesson.

 

Your car allowed you to pass redline while downshifting? Mine refuses to do it. I wouldn't worry to much though, as long as its a one time thing.

 

Dont worry about it. 1st gear in the auto tops out at 45mph. As long as your tranny and engine was in good shape. You shouldn't have anything to worry about. The car shouldn't have stalled though!

ZuM

 

Just for reference, a rev limiter will not help you if the tranny (auto or manual) selects a gear that exceeds redline. Sure, the rev limiter will stop firing the cylinders, but the mechanical inertia of the pistons, crank, and rev train will still be far exceeding their design limits. You can run a car against a rev limtier when accelerating and you'll be fine, but when you dump the car into a gear that exceeds redline, NO rev limiter will save you. If this happens, the pistons can "kiss" and bend valves, bend cranks, spin bearings, and blow up pistons.

The fact that the car stalled leads me to believe that something did fail and is broken in you motor. Numerous owners of the 6 speed GT-Ss have blown their engines due to Toyotas pathetic attempt of designing a "racing" 6 speed. When these owners accidently hit a 4-2 shift at WOT, the engine goes lifeless at first. Then it starts up again after a few attempts, but unfortunately the damage is done. Typically the valves are bent and the pistons are scraped.

Are you sure you were only at 30mph and not 50mph?


Dave

 

Thank you Dave for the info on the rev limiter and possibility of damaging interal engine components through inertia/momentum of those parts. I am pretty sure I wasn't traveling at 50, more like 45. What may have happen is the stick accidently got pushed to neutral which explains why i could rev freely but car doesn't move. Next I got panick and without able to see the stick I shifted it down one notch/gear at a time so first D, then 2nd, and finally 1st in that sequence. So by going through 2nd the car is forced to slow down a bit more to ~30 through engine break which at that point is where I continue to shift it into 1st.
Yes the engine did stall and took some cranking to turn over. I did listen but did not hear any abnormal noise from both the tranny and engine for the next 60+ miles of the trip. Next day I did rev the engine hard on some twisty road and again noise and acceleration is normal as it could be. Now i'm not saying everything is fine and dandy...just hopefully non of the valves or connecting rods were bent due to absence of abnormal noise. I may do the stethoscope inspection with a rubber hose later on just to make sure. But yes whatever happened damage is done, just a matter of to what extent. Couldn't even finish my lunch today because I was so worried

 

Excessive valve clatter would be what too look for. If the performance feels fine and the car runs right, I wouldn't worry about it.


Dave