ok for about 4 months now i thought i was having tranny problems, (now im not sure if i am)
-I get in the car at a cold start up and it would not shift into the 3rd gear, after about 3-5 min of driving it would start sifting fine, so i just always let the car warm up for a long time befor i drove it.. (like 7-10 min,) I did the "self diagnostics for auto transmissions" and everything came back OK.
-after the car starts shifting properly there is times when i will slow down (not to a stop) and the car will not down shift, as soon as i press the gas i feel the car !trying! to move for a split sec. then it down shifts it self and takes off. but other then that, each shift is smooth..
- im thinking could my cat converter be shot/ or i have a bad exaust leak? would this cause the hesitation problem??
-plz tell me what u guys think, i have had alot of pplz comments saying ""REBUILD"" ok i relize that but i dont have the money now...., what do yo think i should do/try?

 

I assume you checked fluid level and condition right? Shifting probs would have nothing to do with your cat. Jammed up cats cause major power loss, that's about it in my experience. I had this happen to me. If your not getting shifts, it's all in the trans ro some ralted part. How many miles on it? have you done a flush? IF not, service the thing first, flush, filter etc. Then give it a go.

 

-yea..... i flushed 4 times (the shifting got better and better each time..
-i know that its the tranny that is giving the "not shifting into 3rd prob." but what about the hesitation ... could a bad cat do that?.. i always let my car warm up.. (every morning for about 4 months) ppl said that could kill a cat. is this true?

 

I don't know about letting a car warm up killing the cat. Over rich conditions kill the cat. At cold fast idle it is rich, but if it is cold, it's going to fast idle no matter what. That hesitation soounds to me to be tranny related as well. It's probably your tranny acting all confused since it's sarting in a higher gear, then downshifting and taking off. If you had success with flushes, you could try it again, but I know that's not cheap, and 4 flushes at 75 bucks each is already 300 bucks. Is it slipping? If not, that's a good thing. A good tranny shop can usually diagnose a shifting problem down to a faulty part..all kinds of little parts and vaccuum operated devices that could cause shifting problems. That would be great for you. I'd bring it in to a reputable place and have them give you a diagnosis. Good luck dude.

 

sounds normal to me....these aren't 450hp Benz automatics now, you have to remember that!!

 

shift solonids? :cough: rebuild :cough:

 

LOL naa not 4 real flushes .. one real flush (from a pro) 3 of my own flushes...

.. i still think its a busted cat. im just going to have to buy a test pipe to "test" it out..

-shifter solonoides!!!!(i know my tranny is Fuked up) shouldn't they come up on the self diognostic?>

 

they can be slow..not dead.

 

You've been having transmission problems for a while, and now that the transmission isn't downshifting properly, you suspect it's the catalytic converter? How about the transmission itself? But in any event, exhaust leaks or a performance exhaust system does affect the way the automatic transmission downshifts, this has been my experience in my stanza (with a full exhaust) and also the maxima with an exaust leak (a big one). A bad catalytic converter will sometimes have a rotten egg smell to it. If your converter is blocked up with excess carbon then you can take it and have it removed and cleaned with some liquid i dunno about. If you can't hear an exahust leak, then you probably don't have one or it's not one signifigant enough to affect the downshifting of the transmission. Letting the car warm up in the morning won't harm your catalytic converter.

 

nooooo no no... i know my tranny is goin b/c is not shifing into 3rd on froma cold start.... but once the tranny warms it shifts super smooth and fast
--but a hesitation when i slow down then try to speed back up (it only happends for a split second), when you stand outside the drivers side door you can feel a lot of heat comming from under the car, a light smell of fuel/exaust and, the exuast is a little black.. thats Y i think somthing "exaust"causing the slight hesitation.
-did any one ever have a bad cat?

 

I really don't think anything is wrong...the no 3rd gear during the warm-up period is normal, autos don't downshift instantaneously like we'd love them too either, so I think you're just imagining things...remember you drive a 12 year old AUTOMATIC!

 

you forgot maxima!.. naa there is soming wrong.. i just went out for a drive and i seem to getting a loss of top end power..

-im nuts.. and DAMAX is right... but what if im not,

tune up time!
.. hell i put 35,000 miles on it in a year.

 

NO 3rd gear is normal during warmup?? Sounds like something is definately wrong to me. A few minutes while cold, maybe, but that shouldn't last very long. Take it to a tranny shop, you are never going to get a positive diagnosis here.

 

yes, on very cold starts the tranny locks the tranny in 3rd gear(aka "safe mode") until sufficiently warm.

 

I never heard that before. Interesting. I still think he should get it checked out..he'll probably post a few more times about this if he doesn't get some definate answers. Glad I have a five-speed!

 

i have posted stuff like this like a million times, i get all differtn answers, maybe its just me but i think my car is getting slower and slower each day.. well to tell the truth this is Y, my tires are balding on the inside (burnouts)i remember it being EZ for my car to peal out if i just put the gas down about 75% now i cant even get them to "screech" i very rarly put it down WOT but i know if i did i would still rip a mark in the road...or i hope my car still could (i know im out of my mine)
-i dunno, now im having thoughts on my maxima and im thinking about getting a second job and droping the maxima and getting a real sports car..
-but i wonder how much longer will my tranny last?.. i hope a year, but i know its going to fall off my car tomorrow.

 

you have to know when to throw in the towel...I mean these cars are reaching their primes now and as always with an OLDER car, meticulous care is a must, cause **** will break. I'll be at 200k soon, next summer I'm not quite sure what I'll do(probably a used motor), don't wanna a new car because I don't want new payments and I wanna put money into my CRX and get my bike in the spring. but if you feel that the Max is being nothing but a money pit, I'd suggest selling it and getting something newer rather than throwing money into something that financially you can't handle or isn't worth it! my advice, if you're concerned about it lasting take it easy on your car, remember its not fresh off the lot!