02 transmission issue ?

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murdered02Q
Posts: 17
Joined: Mon Jun 16, 2008 4:46 pm
Car: 02 infiniti q45

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hey guys, i am new to this forum so first i just want to say hello. i have a 02 q black on black with premium package and was wondering if anybody is having transmission issues. i was having some issues when going from reverse to drive the car would clunk into gear. also from second to third it would do this occasionally. they have replaced the transmission but it is still doing this, any suggestions? thanks in advance


maxnix
Posts: 22627
Joined: Mon Jul 22, 2002 8:11 pm
Car: 1995 Infiniti Q45
1995 Infiniti Q45t
2000 Infiniti Q45

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Has it ever had the accelerator pedal ECM update?

Surprised a dealer would not do that when the transmission was replaced.

Welcome to NICO.

murdered02Q
Posts: 17
Joined: Mon Jun 16, 2008 4:46 pm
Car: 02 infiniti q45

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not sure on pedal upg i think it has though, last time i took it in i asked if all updates had been done and they said yes.

maxnix
Posts: 22627
Joined: Mon Jul 22, 2002 8:11 pm
Car: 1995 Infiniti Q45
1995 Infiniti Q45t
2000 Infiniti Q45

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It wouild be in your Infiniti dealer performed service history which you obtained prior to having the Senior Infiniti tehcnician perform the pre purchase inspection.

murdered02Q
Posts: 17
Joined: Mon Jun 16, 2008 4:46 pm
Car: 02 infiniti q45

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well this car was purchased from an infiniti dealership as a certified used car so i think im ok, besides i dont think the pedal has anything to do with my transmission slamming into gear.
maxnix wrote:It wouild be in your Infiniti dealer performed service history which you obtained prior to having the Senior Infiniti tehcnician perform the pre purchase inspection.

qship96
Posts: 6624
Joined: Sun Nov 24, 2002 11:31 am
Car: 1996 Infiniti Q45

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Shocking that such a newer Q already needed a new transmission- shows how the quality of car has slipped with the 02+ models

murdered02Q
Posts: 17
Joined: Mon Jun 16, 2008 4:46 pm
Car: 02 infiniti q45

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I don't think that one post talking about a transmission replacement is a fair standard of quality to be given to all 02 an newer Q's. Besides even if your theory is correct I personally would give up what little quality they have lost for the milestone they have acheived in appearance over the previous models.

Q45tech
Moderator
Posts: 14296
Joined: Tue Apr 30, 2002 3:19 am
Car: 1990 Q45 342,400 miles 22 years ownership with original engine
1995 G20t 5 speed 334,000 miles 16" 2002 wheels - 205/50/16 Sr20ve vvl

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Seems normal to me. Almost all 90-91Q had at least 1 replacement transmission under warranty and another prior to 120k.

Every C43 AMG and BMW V8 has one by 90-100k.

It's the V8 torque compared to 4 and 6 cylinders.

Only Lexus has developed the 200k+ V8 transmission and that ended with the 4 and 5 speed.

qship96
Posts: 6624
Joined: Sun Nov 24, 2002 11:31 am
Car: 1996 Infiniti Q45

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Thats nuts!

I have 214K on my 96Q original transmission, 305K on 97 MB E420 V8 original transmission

Guess my annual multiple drain/fill procedures using a real synthetic ATF have paid dividends?

In my book, any transmission that doesnt last at least 200K with proper maintenance is flat out unacceptable in ANY modern car, much less a expensive highline vehicle.


Modified by qship96 at 10:13 AM 6/21/2008

Q45tech
Moderator
Posts: 14296
Joined: Tue Apr 30, 2002 3:19 am
Car: 1990 Q45 342,400 miles 22 years ownership with original engine
1995 G20t 5 speed 334,000 miles 16" 2002 wheels - 205/50/16 Sr20ve vvl

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Any transmission that lasts beyond 100k is wasteful of manufacturers resources is the new mantra to cut costs and cover up inflation by decontenting.

What it is, is what it is.

The 94-96 and 97-01 redesign did correct many of early weaknesses and Nissan remans have the fixes incorporated but still 200k is a lot of miles as is 10 years of mild use a long time.

Always a good exercise to read complaint sites and see which models of which brands are less reliable.http://www.consumeraffairs.com....htmlhttp://www.mercedes-benz-usa.com/s_class.phphttp://us.lexusownersclub.com/...28020

Unfortunately so few 2002- Q [Cima] were sold that the word does not get out fast and then it usually 7 years before the horrors show and we are on year 6 now.

Consider that the transmission is operating at the ragged limit with a V8 as it was designed to use on a V6.................so far very few G35 problems with 20 times more sold.

Everyone buying a used car should reserve $3- $5 k for a transmission replacement after 100,000 miles.

murdered02Q
Posts: 17
Joined: Mon Jun 16, 2008 4:46 pm
Car: 02 infiniti q45

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does anyone have any idea why the new transmission is still slipping and clunking into gear????????????????????????

Q45tech
Moderator
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Joined: Tue Apr 30, 2002 3:19 am
Car: 1990 Q45 342,400 miles 22 years ownership with original engine
1995 G20t 5 speed 334,000 miles 16" 2002 wheels - 205/50/16 Sr20ve vvl

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If the ATF is full and has NEVER neen low. then clutch [soft parts] wear and tear is the usual cause.

Failure to do 30k and 60K ATF replacements always allows faster wear.

Q45tech
Moderator
Posts: 14296
Joined: Tue Apr 30, 2002 3:19 am
Car: 1990 Q45 342,400 miles 22 years ownership with original engine
1995 G20t 5 speed 334,000 miles 16" 2002 wheels - 205/50/16 Sr20ve vvl

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New transmission or Nissan US remanned transmission or junkyard transmission is often a question one has to be sure of.

I'm not sure you can still get a NEW 2002 transmission since they made major revisions in 2003-2004 when they integrated the TCU internal to transmission case.

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mcrews
Posts: 905
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Car: 2002 Q45 Sport
Location: Sacramento, Ca

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qship96 wrote:Thats nuts!

I have 214K on my 96Q original transmission, 305K on 97 MB E420 V8 original transmission

Guess my annual multiple drain/fill procedures using a real synthetic ATF have paid dividends?

In my book, any transmission that doesnt last at least 200K with proper maintenance is flat out unacceptable in ANY modern car, much less a expensive highline vehicle.

Modified by qship96 at 10:13 AM 6/21/2008
Ok, let me follow your "logic"1. one post one the board for an 02 w/ new trans and you conclude that ALL 02+ are a piece of junk2.a tech documents the fact that other brands have worse luckand you scream "that's nuts"!!!!!

I mean really, does that thought process make you wonder????


qship96
Posts: 6624
Joined: Sun Nov 24, 2002 11:31 am
Car: 1996 Infiniti Q45

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mcrews wrote:
Ok, let me follow your "logic"1. one post one the board for an 02 w/ new trans and you conclude that ALL 02+ are a piece of junk2.a tech documents the fact that other brands have worse luckand you scream "that's nuts"!!!!!

I mean really, does that thought process make you wonder????
I stated the quality has slipped with the 02Q.....YOU concluded the 02Q is a piece of junk!

Yes, I do think its NUTS not to expect a transmission in a modern car, especially an expensive luxury brand known for its reliability to be designed and built to last at least 200K


maxnix
Posts: 22627
Joined: Mon Jul 22, 2002 8:11 pm
Car: 1995 Infiniti Q45
1995 Infiniti Q45t
2000 Infiniti Q45

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I can't quite remember, but the RE5 is 80 - 120 lbs. lighter than the RE4 despite having an extra gear. Unless the qulaity of the materials (harder steel gears) is much higher, something is not as robust. And it was optimized for the VQ35DE with no change in gear ratios for the VK45DE, which is why the less powerful LS430 could accelerate as quickly with its optimized gear ratios in a transmission unique to its V8.

Q45tech
Moderator
Posts: 14296
Joined: Tue Apr 30, 2002 3:19 am
Car: 1990 Q45 342,400 miles 22 years ownership with original engine
1995 G20t 5 speed 334,000 miles 16" 2002 wheels - 205/50/16 Sr20ve vvl

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You can expect anything you want to but you will be disappointed on average.

Why do aftermarket and oem extended warranties stop at 100k, because that is the design point to save expense.

You might find this interesting and an Audi A8 cost way more than a Cima:http://audi-diy.blogspot.com/2....html

BMW 740 seem to have same problems failing at 70-100k:http://www.bmwseven.com/e38trans.html

"my 740IL started to act up again, and eventually went completely out. Now out of warranty I replaced the transmission at a cost of $8,800.00 out of my own pocket.

Service Manager said that BMW would do nothing because of being out of warranty. I complained and asked for regional service manager ... never responded. Sent letter to BMW and no response. Guess what, now at 86K miles transmission #3 is starting to act like the previous two lemons. The car is low miles and treated like a princess even though 10 years old. At a price of $63K I expected to own a masterpiece that would be trouble-free; instead I got a lemon drive-train and cold shoulder from BMW."

"Our 2001 BMW 740i transmission suddenly stopped working in reverse yesterday. We purchased this car as a certified used vehicle and the warranty ran out about 6 months ago. We have always had it serviced at a BMW dealership and don't feel that at 70,000 miles the transmission should break down on a top of the line luxury vehicle. It seems that this is a consistant problem with BMW especially with 2000-2001 models."

Guess lots of others dreamed of better than 100k life also AND WERE DISAPPOINTED


Q45tech
Moderator
Posts: 14296
Joined: Tue Apr 30, 2002 3:19 am
Car: 1990 Q45 342,400 miles 22 years ownership with original engine
1995 G20t 5 speed 334,000 miles 16" 2002 wheels - 205/50/16 Sr20ve vvl

Post

Of all the V8 lux brands, Nissan transmissions are the least expensive to replace assumming you pay discounted MSRP parts and the lower labor rate. We can change a 2002 transmission for $4200* roughly $2000 less expensive than the German brands. And only $1200 more than the old 4 speed AT.

A 5 speed LS400/430 remann costs us $1430 more to replace with our 27% discount.

* Later model 5AT have an integrated TCU inside transmission case, so they are more expensive by $650.



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