transmission shifting hard

[94Q45 4.5]

i have a 94 Q45 with 130 000 miles and i noticed that my transmission hasnt been shifting to smooth and clunks going into gear and downshifting at times, should i flush my transmission? would it be safe to do that with a transmission with this many miles?, what about seafoams 'TransTune' additive? thanks in advance mitch

[qship96]

130,000 miles is young to be having problems, unless transmission was not regularly serviced since day one- are you original owner? What is the maintenance history to date for fluid exchanges,internal screen/external filter servicing?

What color/smell does fluid wiped from dipstick reveal on the paper towel?Must do regular ATF pap-smear tests,just like women get

[94Q45 4.5]

no, i have put about 100 miles on it and dont know the previous amount of owners or maintanence records, the atf looks and smells a litte bit burned, atf fluid is a redish brown color

[qship96]

Probobly why the car was put up for sale, most dont get rid of low value cars until they find out an expensive repair is needed soon-then they dump them on the unexpecting new owner.

Best you can do is have transmission serviced.. drop pan,clean and inspect for debris,change internal screen and external filter,flush fluid and hope for a life extention....about 3000 to properly replace transmission with factory rebuild when time comes

[94Q45 4.5]

note the transmission isnt is bad as it sounds, it shifts smoother at higher rpms, but at like 3000 rpms for example it shifts hard, and when cruising at like 60 on the freeway, ill give it like half throttle let up and feel like a clunk but i thinink thats could be the u joints in the d-shaft or the rear end, should i do it myself or have a service shop run it on a atf fluid exchange machine? will any additives help to the gunk out before i change the atf fluid?

[qship96]

You must change both internal and external filters at this point-if you feel comfortable with this, by all means do it- if not,have a pro do it,and I would go for the machine fluid exchange at this point considering your current fluid is PAST DUE for changing based on color/smell you describe.

[94Q45 4.5]

would changing the filter reqire dropping the pan? where is a good place to get the transmission services besides the stealership?

[qsiguy]

Any "transmission malfunction" indication on the dash display? If so you could narrow a few things down. Sounds like the fluid isn't in very good condition so I'd do that first regardless.

Next, I think I would double check the thermal sensor as well as the dropping resistor for issues. If the dropping resistor is bad or disconnected the lower RPM shifts will be very firm. I know this as I've been experimenting with disconnecting mine to get these harder shifts.

I also had a loose wire on the ECU a while back, that was causing a trans problem w/indicator light, and was shifting at strange times making it shift really hard.

Oh, and yes, you have to drop the pan to replace/check the screen in there. You can get a decent price on the parts from Joe at Infiniti of Scottsdale but for a local place to do the work for you I'd suggest finding someone that's recommended from here.

[maxnix]

would changing the filter reqire dropping the pan? where is a good place to get the transmission services besides the stealership?

http://www.bgfindashop.com

Call to ask if they will provide the services you require. Some shops won't drop pan.

Get the parts from Joe.

Read some posts about transmission flush and fluid exchange.

No mention of condition or appearance of ATF. Add an auxiliary ATF cooler?

Get your Infiniti Dealer performed service history so you have a basis of early maintenance to predict future life.

When service history is unknown, wise new owners exchange all fluids and filters immediately.


Modified by maxnix at 11:40 AM 3/6/2008

[Haitian_King]

Any "transmission malfunction" indication on the dash display? If so you could narrow a few things down. Sounds like the fluid isn't in very good condition so I'd do that first regardless.

Next, I think I would double check the thermal sensor as well as the dropping resistor for issues. If the dropping resistor is bad or disconnected the lower RPM shifts will be very firm. I know this as I've been experimenting with disconnecting mine to get these harder shifts.

I also had a loose wire on the ECU a while back, that was causing a trans problem w/indicator light, and was shifting at strange times making it shift really hard.

Oh, and yes, you have to drop the pan to replace/check the screen in there. You can get a decent price on the parts from Joe at Infiniti of Scottsdale but for a local place to do the work for you I'd suggest finding someone that's recommended from here.

Hey. That's a great idea. I never thought of that.

I had been worried about my trans for a while because of odd shifting. I did a drain and refill/pan drop and a BG flush, but sometimes it would give me the shortest 1st gear and shift into 2nd really hard. It still does it from time to time. But then other times, 1st gear will be long as hell and take my RPM's up to like 4.5k before shifting to 2nd smoothly. I mean SERIOUS acceleration. I'd been trying to describe it for a while, but I think that this may be a thread to pull.

Keith didn't think I needed a new trans or a rebuild so I'll be checking this drop resistor. I'll take a look at my ECU too. I'll swap it out with my NICO ECU temporarily to see if there's a difference.

BTW, how did you fix the loose ECU wire?

[budvoss]

Did the drop resistor solve the problem. the reason i ask is mine is acting odd at shifting. the drop resistor makes an odd noise when key is on. disconnect resistor , noise goes away and even later and harder shifts thanks

[Haitian_King]

Did the drop resistor solve the problem. the reason i ask is mine is acting odd at shifting. the drop resistor makes an odd noise when key is on. disconnect resistor , noise goes away and even later and harder shifts thanks

Haven't had a chance to check it, I haven't driven since Monday. It also doesn't help that I don't know where the hell it is, and what to do with it when I do find it. I looked where it was said to be in the picture, but I found diddily.

If the resistor is bad, putting in a new one will stop the odd/hard shifting? Between that and my damn drivshaft/transmission mount my transmission is my next headache.

I ask Keith about it when I go see him if I don't get an answer here. I searched but I couldn't find anything concrete to help.

[96Qowner]

Here's where to find it on a G50:

zerothread?id=120986

[Haitian_King]

Thanks a million. Hopefully I can get to the bottom of this.

[94Q45 4.5]

this was my post origannaly anyways i had my car ran through the atf machine and had internal and external filters replaced and seems as if nothing has changed, its not shifting as hard, jerking wise but now its clunking really hard going into reverse and drive and i think 3rd gear is bad because say if im third gear, i give it 1/2 throttle and let up, i will feel i clunk, so now im not sure what to do, the car has 130000 by the way, could it be one of the transmission mounts? if it keeps acting up im going to have to dump it on somebody thanks in advance

[qship96]

Have you taken the car to the dealer for a quick look and opinion on the issue?

Who did your transmission flush and filters?

[NightRiderQ45]

if it keeps acting up im going to have to dump it on somebody thanks in advance

I can truly understand....

[94Q45 4.5]

i had the transmission serviced at a trusted local transmission shop, how much will they charge to loook at my transmission at the steakership? they are such con artists sometimes, but it depends what dealer you go to

[RAP]

this was my post origannaly anyways i had my car ran through the atf machine and had internal and external filters replaced and seems as if nothing has changed, its not shifting as hard, jerking wise but now its clunking really hard going into reverse and drive and i think 3rd gear is bad because say if im third gear, i give it 1/2 throttle and let up, i will feel i clunk, so now im not sure what to do, the car has 130000 by the way, could it be one of the transmission mounts? if it keeps acting up im going to have to dump it on somebody thanks in advance

LIKE LIKE LIKE you're assuming that a dumpee would be as stupid as you??? and buy your car???hmmmm

And of course you find that dealerships are CON ARTIST??? You must have had a complicated up-bringing. The concept of right and wrong has eluded you.

Jack

[94Q45 4.5]

i said it depends on what dealer you idiot, i mean JACK, and i only paid 900$ for a 94Q45 with 130 000 in good shape except for overheating proplem which i fixed,[water pump and t-stat], so i must not be that stupid, and i wouldnt pass a deal like that up just cause the transmission was shifting a litle firm, so shut up before you make assumptions you ****** bich

[Haitian_King]

i said it depends on what dealer you idiot, i mean JACK, and i only paid 900$ for a 94Q45 with 130 000 in good shape except for overheating proplem which i fixed,[water pump and t-stat], so i must not be that stupid, and i wouldnt pass a deal like that up just cause the transmission was shifting a litle firm, so shut up before you make assumptions you ****** bich

Whoa. Fighting words?

Come on guys.

[94Q45 4.5]

please excuse me, i usually dont talk crap ovet the web but some people just make me mad

[RAP]

i said it depends on what dealer you idiot, i mean JACK, and i only paid 900$ for a 94Q45 with 130 000 in good shape except for overheating proplem which i fixed,[water pump and t-stat], so i must not be that stupid, and i wouldnt pass a deal like that up just cause the transmission was shifting a litle firm, so shut up before you make assumptions you ****** bich

Not that DUMB?

I rest my case.

At least everyone will know that this car may appear in the FOR SALE column as the guy stated he WILL DUMP IT ON SOMEBODY if he can't fix the problems. Consider this my contribution towards consumer protection

Time to take a break now before the mods lock me out. I will no longer post on this thread.

[Haitian_King]

Not that DUMB?

I rest my case.

At least everyone will know that this car may appear in the FOR SALE column as the guy stated he WILL DUMP IT ON SOMEBODY if he can't fix the problems. Consider this my contribution towards consumer protection

Time to take a break now before the mods lock me out. I will no longer post on this thread.

lol. I knew it was coming.

[94Q45 4.5]

i wouldnt post it on here anyway, and if i wanted to i could sell it locally within a week, a lot of people have wanted to buy my car as is for over 2grand, and as for RAP, he seriosly has no life and all he does is talk bs over the internet, and he warn all the consumers like i actually give a ****

[maxnix]

i dont know the previous amount of owners or maintanence records, the atf looks and smells a litte bit burned, atf fluid is a redish brown color

I hope he gave you money to take the care and reapir the damage his heglect caused.

It's time to search on flush and BG machine.

http://www.bgfindashop.com

[maxnix]

i wouldnt post it on here anyway, and if i wanted to i could sell it locally within a week, a lot of people have wanted to buy my car as is for over 2grand, and as for RAP, he seriosly has no life and all he does is talk bs over the internet, and he warn all the consumers like i actually give a ****

You know, I think a person that goes out and blows any amothe unt of money on a car that he has no idea of the maintenance history nor current condition of same doesn't have much of a chance at life either. Life is tough, it's even tougher when you are stupid.

So ease out unless you truly want help. We tend to call it like it is here and not abuse people nor our rides. We are not about screwing other people who we hope are dumber than we are.

[mtzgr777]

Any "transmission malfunction" indication on the dash display? If so you could narrow a few things down. Sounds like the fluid isn't in very good condition so I'd do that first regardless.

Next, I think I would double check the thermal sensor as well as the dropping resistor for issues. If the dropping resistor is bad or disconnected the lower RPM shifts will be very firm. I know this as I've been experimenting with disconnecting mine to get these harder shifts.

I also had a loose wire on the ECU a while back, that was causing a trans problem w/indicator light, and was shifting at strange times making it shift really hard.

Oh, and yes, you have to drop the pan to replace/check the screen in there. You can get a decent price on the parts from Joe at Infiniti of Scottsdale but for a local place to do the work for you I'd suggest finding someone that's recommended from here.

I'm having eerily similar problems. Since I've bought the Q 2 months ago, It's always had a hard 1st-2nd shift and always had one defective Knock Sensor. Recently, it's been acting stranger, as in sometimes it will shift quickly and sometimes it will rev up to 4500 RPM'S before shifting into 3rd! I do have an SES light that reads: Knock Sensor (which I already knew about and don't think it has anything to do with this) and P1705 THROTTLE POSITION SENSOR. Whenever I go to start my car after it's been sitting for ~2+ hours in the cold, I get a TRANSMISSION MALFUNCTION display that goes away within 8 seconds. Today, when I was on my way to a mechanic (of all things) my Q randomly what seemed like just "dropped the transmission." I was going about 45mph at ~2400 RPM's then suddenly, it disengaged and I was basically in neutral....my RPM'S shot to almost 6k. Then, about 10 seconds later, it just as quickly shifted back into gear. Any ideas????

Edit: The transmission fluid is fresh (pink; no smell) and The car just hit 142k


Modified by mtzgr777 at 3:58 PM 10/17/2009

[qship96]

Throttle position sensor problems show up as transmission problems on the 96Q.....fix the throttle position sensor and see what happens!

[mtzgr777]

Thanks for replying! Yea, I'll give that a try, should I just get it adjusted or order a new/used one?