i've been having problems with my car shifting and i know its not the transmission. the only conclusion i've came up with is its a vaccum leak. All of this stemmed from a manifold gasket job....anyway, i noticed a hose near the MAF that is not connected to anything.....is it suppose to have a connection....it looks like an upside down J and it is clipped to the housing right before the throttle housing!!

 

dont worry about that, it's a tranny breather hose and not supposed to be hooked to anything else

 

yeah Craig is right. That the vent hose on the tranny. Its always a good idea to check the end to be sure its not restricked.yeah. I hate to say it But you have more that likely fell victom of Nissan auto tranny. You may to try and run a senor check on it to see if that may be it.

 

its crazy cause before i tried to do the gasket job, my car was running fine...i had to rush putting everything back together and ever since then, my car has been running the way it is now! it might be the tranny....if it is, looks like i'll be looking for a 5 speed!!

 

what Gasket job? Just check back over yourself.

 

well,
it's quite possible that you didn't reconnect the vaccum hoses to their proper location. imo that's quite easy to do if you're just slightly distracted while putting the intake plenum back together.