02 Infiniti q45 winds down i'll be driving like 55 and let off gas and it wi....

[SeanPlant]

the car winds down, then i'll hit the gas lightly and it will slip/jerk forward, like the whole car will shake . I live in vegas and our driveway is up hill slightly and every time I take it out of park it's like a huge noise slipping into gear. 75000 miles someone help please /

also where can i order bose speakers besides dealership, i just noticed that my rear right door speaker doesn'teven work, it wasn't sounding bad or anything, i was just diagnosing manually the other day and when i hit rear and right there's no sound it just dies and is silent, could that be wiring or some kind of chip for the audio
Modified by SeanPlant at 11:59 AM 11/14/2009

[paranoidjack]

It amazes me how few people use the PARKING brake when PARKING an automatic.

Ever notice how when you put a car into "P," you can feel the car roll back and forth a little bit?

I'm sure Q45Tech or another more transmission knowledgeable mechanic can explain the intricacies of WHY, but I can at least explain simple procedure for the correct way to park any automatic transmission vehicle on a hill.

Brake to a stop. With foot firmly still on brake, fully apply parking brake.NOW shift to Park - notice, the car doesn't move anymore?

I've found when you park in an auto car on a hill, if you don't apply the brake, all kinds of godawful pops and knocks come when you put it into gear.

Using the above method, my car ALWAYS seamlessley shifts from P to D, even on steep hills.

Sorry for the long answer - won't help your "winding down" problem, but I had to get this out there because too many people never use their brake!!!

However, at 179k, my transmission is still very healthy, red fluid test at ever 15k check, and although it's starting to feel a bit tired, I anticipate at least 200k out of it.
Modified by paranoidjack at 3:53 PM 11/14/2009

[Infinitiguy19]

Its the parking pawl that takes most of the damage when you don't apply the brake on a hill.

http://en.wakopedia.org/wiki/Parking_pawl

I learned all this in drivers ed a couple of years ago. What gets me is why people don't apply the brake to shift from revers to drive and vise versa, I assume that does a decent amount of damage.

Why can't wakopedia links be posted???
Modified by Paul Wall at 3:59 PM 11/14/2009

[paranoidjack]

I don't know if I buy extensive damage done from D to R or vice versa, but for the record, I ALWAYS pop to N in between that exchange, and allow transmission to do whatever up or down revs it needs to do to feel "comfortable" prior to gassing.

[SeanPlant]

that link for parking pawl didn't work, but what i'm tryin to figure out is why the vehicle winds down all the time im not even in triptronic. I had 3500 dollars worth of work down in san diego 6 months ago, had a cracked exhaust manifold and came back to 29 palms marine corps base, the next day for 5 months the car idled super low like it would shake at stop lights and felt like it was gonna stall out when i accelerated. so i changed my spark plugs they pulled some codes because they said it was misfiring. so that problem stopped but now my check engine light still comes on all the time and i have these mechanics telling me i need a new throttle chamber 800bucks cuz it's idleing to high now. it isn't though it idles at 1000 in p and r n and d it's at about 950 rpms. BUT WHEN I DRIVE IM NOTICING THE CAR WINDING DOWN WHEN I LET OFF GAS SOMETIMES MAYBE IT'S SUPPOSED TO BUT WHEN I HIT THE GAS AGAIN LIGHTLY IT'S LIKE THE WHOLE CAR SHAKES LURCHING FORWARD AT THE SAME TIME.

[paranoidjack]

Honestly Sean, your best bet here is a short video. Even with a cell phone, it will help us to understand what you mean. It's hard for us to even begin diagnosing your issue without a service history and an "easily conveyable" issue. Grab a cell video and post it up here.

Also, any check engine light?

As for the Bose, there's a company online specializes in refurbishing Bose setups. Someone else might have the link for you.

Most likely your amp is fried (which on the Bose systems is mounted ONTO the speaker housing).

You can either send it out and have it rehabbed, or replace it with a junkyard unit.

Alternatively, replace all 4 speakers, and install an aftermarket deck. This will require rewiring the speakers completely, and most likely speaker mounting kits to accommodate and provide the correct enclosure size for the speakers you are putting in. Cheapest option (and could be long lasting) is a junkyard unit. I'm not sure but I think most Nissans of similar years equipped with the Bose system will swap right out.

[Q451990]

Why can't wakopedia links be posted???

zerothread?id=228363

[xerexabante]

I am sure they took off your battery for extended time. You need to do a throtle idle reset/relearn that you can do yourself. Search the forum to find it or google it. I email me I am on the SW area. If not let me now see if I can get it from alldata for you.

[SeanPlant]

what do you mean they took my battery off for an extended time? what's alldata and how would i go about doing this throttle/idle reset relearn? man thanks for your time/knowledge much appreciated.....

[Infinitiguy19]

Simple Google search: zer...aning

[xerexabante]

When you take the battery off for at least 8-12 hours the Ecu does a hard reset, and the idle has to e set in order to get the right RPMs. I would get the codes on the MIL to see what is wrong with your car.

Post back your codes so we can help you with the car.

[SeanPlant]

how do i get codes on the MIL, don't know what that is.... also i'm thinking maybe it's because i have had about 150 pounts in there over the last 2 months, i'm thinking when i let off the gas and it winds down, slow's down, and then i hit the gas ever so lightly it's just kind of lagging and it pushes the car forward for a second....but about the MIL codes how do i get those thanks for your time Sean Plant

[xerexabante]

Go to Autozone and have the codes, pulled(free). You also need to do the idle relearn. You need to do this so we can help you. Until you do this there is not much I can do for you.

I always do the foot brake before put into Park.

[donflamenco]

Sean Plant---sounds like a similar problem to what I had--spent countless trips to the mechanic, reading general codes, came on here, and they suggested replacing the coil packs---that did it.

Here;s the thread zerothread?id=431321

[Q451990]

I have not heard of any coil pack failures on the F50 series of the Q45 (2002+) - not to say that it can't or isn't happening, but so far it seems to be a Y33 thing (97-01).

Heath

[SeanPlant]

just trying to figure out still what the problem is i haven't taken out the 200 pounds in the back and trunk yet that has been sitting there for about 3 months. that might be the problem but im just wondering if driving 2500 miles from vegas to NC with about 500 pounds of stuff packed in the back and trunk would ruin the rear shocks, becuase they are trashed i went to a nissan dealer and they can't even align the rear cuz the shocks are toast. it sags about 7 to 10 inches off the ground in the rear. but that is what i wonder might be the problem when it winds down, because maybe the computer in the car is so advanced that it's retarding the engine on purpose cuz the rear shocks are trashed???

[mcrews]

when I had my shocks and struts replaced it drove like crap and wallowed. I went back to the tire shop and he called the dealership saying he would pay the charges. Seem there was a blown fuse and the electronic stability control modual was not getting power 1 hr and $115 (pd by shop) I was good as new.

maybe what's wrong.....hard to say. but having it handle 'bad' seem worse than the shocks