Tranny Problems, Killing the Car at idle Options

[D-Man]

I posted in OT, because this is relating to my Altima, But the people on the Nissan forums aren't helping me at all. We've got several super-geniuses here that may be able to point me in the right direction.

Okay, this issue is that (automatic tranny) When in park or neutral, everything is fine, But if I’m sitting at a dead stop in Drive, then the car starts shaking, badly (as if it weren’t getting fuel), the RPM drops below the norm, and sometimes will even die. But if I come to that same stop, and slip it into neutral, then it’ll idle just fine. (witch is how i've instructed the misses to drive it right now)

Also it isn’t shifting right. Normally it’ll shift at about 2500RPM, but here lately, it’ll goto almost 3500 RPM before shifting, and makes this HORRIBLE ear poping noise before it does. Like a jet engine going into a high altitude makes your ears pop, Same feeling, Less intense.




I know I’m not about to find a KA24DE instruction manuel here, But could someone just point me in the right general direction on this one? I’ll figure out the application myself, I just need to understand the concept behind whats happening. Thanks ya’ll.

[D-Man]

Answer my question boy...wat about in low gear?

yes, in low it still does the same thing.

Does the transmission lag between shifting from D to N and from N to D.

It should engage immediately.



If the transmission shifts really high in the rpm it could be the speed sensor or the throttle position sensor ( depending on the year of the car).


The sad thing about transmission are, once you have a problem inside transmission the only thing you can do is to change the transmission fluid (i don't think your car has a transmission filter) and cross your fingers.

If the transmission requires a major repair you would need to take the transmission to a special mechanic because transmission require a million specially tools to take apart and replacement parts are through the dealership orders only.

No, it seems to do the actual "shifting" just fine... Just getting it to shift can be an issue...
OBDII it's a 98; i believe it's TPS... And that makes a butt-load of sense, that would prove the problem at drive and at idle...
A million eh? I've only got a few hundred thousand... ...

Seriously, specialty tools? That sounds intimidating. For example, what?

Probably it's silly idea and since I do not have any experience with AT tranny It's more than probable... still... have you checked spark plugs, distributor and spark plug wires? Just in case...

not silly. But i recently replaced the headgasket, (after my chicks... uh... Family's houston mechanic? W/e. After he replaced the fuel injectors & flushed tranny) I also did new NGK iridum spark plugs, and a fancy-pants set of plug-wires (lower level brand though) belts, oil waterpump, and all the other norms of a genneral tune for the fresh HG.