mis-shift + CEL = ?

[industrialTOOL]

well, to start off, about 8 months ago, I mis-shifted my 5spd (2nd gear at 80mph). the car would not idle at all, and when i took it to get the CEL codes read, i got all 4 cylinders mis-firing, and idle control system malfunction. so.... i let the car sit. after a while it would start. and then it would idle. then eventually it would run and idle and it seemed fine, except for the damn CEL.

so about 1 1/2 weeks ago, the CEL was turned off and it's still off now. i'm confused. did the car fix itself?

[MicaCeli]

I'm gonna go with 'Its possesed'

[00silverGTS6spd]

seems like you bent the valves but I dunno why the cel would go away.

I'd take it in because thats definitely NOT a good thing.

[2000GTSblack]

How does he car drive now, is it like before you mis-downshifted?

I have seen strange things in my years of working on cars from stuff like that. for instance- once tore apart top end of eclipse for just that reason, when i got it apart all that happened was some of the valves were stuck open, which would lead you to believe bent, right? wrong, they were tested as perfectly straight by the machine shop, reinstalled them, car ran fine.

But bent valves are a very definite possibility in your case. These are interference engines.

It could also be a blown head gasket. Do you smell a sweet almost burnt caramel smell when it's running. that will screw up o2 readings, knock readings, hell almost everything. lol

Could be a ton of stuff, play it safe and get it checked(even more so if it isn't quite running right)

[silv3r0ne]

Originally posted by MicaCeli
I'm gonna go with 'Its possesed'

i'll stick with this theory...

[industrialTOOL]

.

Originally posted by 2000GTSblack
How does he car drive now, is it like before you mis-downshifted?It could also be a blown head gasket. Do you smell a sweet almost burnt caramel smell when it's running. that will screw up o2 readings, knock readings, hell almost everything. lol

its running pretty much like it did before the mis-shift, with the exception that you can hear valve ticking. the car still pulls hard all through the powerband.

Originally posted by 2000GTSblack
It could also be a blown head gasket. Do you smell a sweet almost burnt caramel smell when it's running.

i haven't really noticed, but i'll keep my eye (or nostril) out for it.

Originally posted by 2000GTSblack
Could be a ton of stuff, play it safe and get it checked(even more so if it isn't quite running right)

what kind of place could check it for me. i don't really think i can take it to toyota, considering it's now an auto->manual swap.

Originally posted by MicaCeli
I'm gonna go with 'Its possesed'

i concur. fastest auto gt ever

[LilRocketSpyder]

Have the compression checked and the coolant for hydrocarbons.

Low or leaking compression=bent valves

Hydrocarbons in the coolant=blown head gasket.

[Illusive]

mysfire in all 4 cylinders following a miss shift = bent valves.

you need your head rebuilt. I'm suprised you kept driving on it like nothing happened.

[Boosted2.0]

Originally posted by Illusive
mysfire in all 4 cylinders following a miss shift = bent valves.

[Andres Acevedo]

It happen to me in my celica GT. There is definitely a problem of some kind in the gts tras or fork or something. I have own a 2000 and i did not mishift at all, running from 2 to 3 the car grinds and then the ticklin sound. I use the car for some time. After that i take the car to the dealer and they found bent valves. Its sure that you have bent valves.

[2000GTSblack]

Originally posted by LilRocketSpyder
Have the compression checked and the coolant for hydrocarbons.

Low or leaking compression=bent valves

Hydrocarbons in the coolant=blown head gasket.

yeah, any good mechanic can checkit out, if you don't want to

[Sirk_2]

Originally posted by MicaCeli
I'm gonna go with 'Its possesed'

[hondafighterGTS]

when i first got my car like 5 yrs ago i did that.... the cel came on..... for 1 day. it went off again... it worked fin for about a year til i did the same thing again... i know im an idiot... but this time the valves went to zhit.... theres a one time forgiveness policy...